{"title":"Trade \u0026 Bulk Glazing Orders","description":"\u003cstyle\u003e\n  .pr-cbo { max-width: 1140px; margin: 0 auto; padding: 0 16px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-body, inherit); }\n  .pr-cbo * { box-sizing: border-box; }\n  .pr-cbo__hero { padding: 28px 0 12px; }\n  .pr-cbo__hero h2 { font-size: 26px; margin: 0 0 10px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-heading, inherit); }\n  .pr-cbo__hero p { font-size: 17px; line-height: 1.6; margin: 0 0 12px; color: var(--pr-text-body, #1f2933); }\n  .pr-cbo__hero strong { color: var(--pr-text, #1f2933); }\n  .pr-cbo__personas { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 12px 0 28px; }\n  @media (min-width: 720px) { .pr-cbo__personas { grid-template-columns: 1fr 1fr; } }\n  .pr-cbo__persona { border: 1px solid var(--pr-border-light, #e5e7eb); border-radius: var(--pr-radius-lg, 14px); padding: 24px; background: var(--pr-bg-white, #fff); box-shadow: var(--pr-shadow-sm, 0 1px 2px rgba(0,0,0,0.04)); display: flex; flex-direction: column; }\n  .pr-cbo__persona h3 { margin: 0 0 8px; font-size: 19px; color: var(--pr-text, #1f2933); }\n  .pr-cbo__persona p { margin: 0 0 14px; line-height: 1.55; color: var(--pr-text-body, #374151); font-size: 15px; flex: 1; }\n  .pr-cbo__persona-tag { display: inline-block; font-size: 12px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--pr-accent, #D98E04); margin-bottom: 8px; }\n  .pr-cbo__btn { display: inline-block; padding: 10px 22px; background: var(--pr-accent, #D98E04); color: #fff; text-decoration: none; border-radius: var(--pr-radius-md, 8px); font-weight: 600; font-size: 14px; transition: background 0.15s; align-self: flex-start; }\n  .pr-cbo__btn:hover { background: var(--pr-accent-dark, #B07203); color: #fff; }\n  .pr-cbo__btn--ghost { background: var(--pr-bg-white, #fff); color: var(--pr-text, #1f2933); border: 1.5px solid var(--pr-text, #1f2933); }\n  .pr-cbo__btn--ghost:hover { background: var(--pr-text, #1f2933); color: #fff; }\n  .pr-cbo__section { padding: 24px 0; }\n  .pr-cbo__section h2 { font-size: 22px; margin: 0 0 8px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-heading, inherit); }\n  .pr-cbo__section \u003e p.pr-cbo__lede { margin: 0 0 18px; line-height: 1.6; color: var(--pr-text-muted, #6b7280); font-size: 15px; }\n  .pr-cbo__finder { display: grid; grid-template-columns: 1fr; gap: 14px; }\n  @media (min-width: 560px) { .pr-cbo__finder { grid-template-columns: 1fr 1fr; } }\n  @media (min-width: 920px) { .pr-cbo__finder { grid-template-columns: 1fr 1fr 1fr; } }\n  .pr-cbo__tile { border: 1px solid var(--pr-border-light, #e5e7eb); border-radius: var(--pr-radius-lg, 14px); padding: 18px 18px 16px; background: var(--pr-bg-white, #fff); text-decoration: none; color: inherit; transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s; display: block; }\n  .pr-cbo__tile:hover { border-color: var(--pr-accent, #D98E04); box-shadow: var(--pr-shadow-md, 0 4px 12px rgba(0,0,0,0.06)); transform: translateY(-1px); color: inherit; }\n  .pr-cbo__tile-icon { font-size: 26px; line-height: 1; margin-bottom: 8px; display: block; }\n  .pr-cbo__tile h3 { margin: 0 0 4px; font-size: 16px; color: var(--pr-text, #1f2933); }\n  .pr-cbo__tile p { margin: 0; line-height: 1.45; font-size: 13px; color: var(--pr-text-muted, #6b7280); }\n  .pr-cbo__info { display: grid; grid-template-columns: 1fr; gap: 16px; padding: 16px 0 24px; }\n  @media (min-width: 720px) { .pr-cbo__info { grid-template-columns: 1fr 1fr; } }\n  .pr-cbo__info-card { border-left: 4px solid var(--pr-accent, #D98E04); background: var(--pr-bg-light, #f9fafb); padding: 20px 22px; border-radius: var(--pr-radius-md, 8px); }\n  .pr-cbo__info-card h3 { margin: 0 0 8px; font-size: 17px; color: var(--pr-text, #1f2933); }\n  .pr-cbo__info-card p { margin: 0 0 8px; line-height: 1.55; font-size: 14px; color: var(--pr-text-body, #374151); }\n  .pr-cbo__info-card a { color: var(--pr-accent, #D98E04); font-weight: 600; text-decoration: none; }\n  .pr-cbo__info-card a:hover { text-decoration: underline; }\n  .pr-cbo__measure ol { margin: 8px 0 0; padding-left: 22px; line-height: 1.6; font-size: 14px; color: var(--pr-text-body, #374151); }\n  .pr-cbo__measure ol li + li { margin-top: 4px; }\n  .pr-cbo__faq { padding: 24px 0; }\n  .pr-cbo__faq h2 { font-size: 22px; margin: 0 0 14px; color: var(--pr-text, #1f2933); font-family: var(--pr-font-heading, inherit); }\n  .pr-cbo__faq-item { border-bottom: 1px solid var(--pr-border-light, #e5e7eb); padding: 14px 0; }\n  .pr-cbo__faq-item:last-child { border-bottom: none; }\n  .pr-cbo__faq-item h3 { font-size: 16px; margin: 0 0 6px; color: var(--pr-text, #1f2933); font-weight: 600; }\n  .pr-cbo__faq-item p { margin: 0; line-height: 1.6; font-size: 14px; color: var(--pr-text-body, #374151); }\n  .pr-cbo__crosslinks { padding: 24px 0; }\n  .pr-cbo__crosslinks h2 { font-size: 20px; margin: 0 0 12px; color: var(--pr-text, #1f2933); }\n  .pr-cbo__chip-row { display: flex; flex-wrap: wrap; gap: 8px; }\n  .pr-cbo__chip { display: inline-block; padding: 8px 14px; background: var(--pr-bg-light, #f9fafb); border: 1px solid var(--pr-border-light, #e5e7eb); border-radius: var(--pr-radius-full, 999px); color: var(--pr-text, #1f2933); text-decoration: none; font-size: 13px; font-weight: 500; transition: background 0.15s, border-color 0.15s; }\n  .pr-cbo__chip:hover { background: var(--pr-bg-white, #fff); border-color: var(--pr-accent, #D98E04); color: var(--pr-accent, #D98E04); }\n  .pr-cbo__sticky-cta { margin: 12px 0 36px; padding: 20px 24px; background: var(--pr-text, #1f2933); color: #fff; border-radius: var(--pr-radius-lg, 14px); display: grid; grid-template-columns: 1fr; gap: 12px; align-items: center; }\n  @media (min-width: 720px) { .pr-cbo__sticky-cta { grid-template-columns: 1fr auto; } }\n  .pr-cbo__sticky-cta h3 { margin: 0 0 4px; font-size: 17px; color: #fff; }\n  .pr-cbo__sticky-cta p { margin: 0; font-size: 14px; line-height: 1.5; color: #e5e7eb; }\n  .pr-cbo__sticky-cta a { color: var(--pr-accent, #D98E04); font-weight: 600; text-decoration: none; }\n  .pr-cbo__sticky-cta a:hover { text-decoration: underline; }\n  .pr-cbo__sticky-cta .pr-cbo__btn { background: var(--pr-accent, #D98E04); color: #fff; align-self: stretch; text-align: center; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"pr-cbo\"\u003e\n\n  \u003csection class=\"pr-cbo__hero\"\u003e\n    \u003ch2\u003eBulk orders \u0026amp; trade pricing — sealed units for builders, glaziers, developers\u003c\/h2\u003e\n    \u003cp\u003e\u003cstrong\u003e5+ units, tier pricing, scheduled site delivery.\u003c\/strong\u003e If you're a glazier, fitter, builder, or property developer ordering five-plus units a week, the trade route cuts your unit price 5–15% and books delivery to your site or yard at your slot. Every job ships UKCA-marked, BS EN 1279-compliant, with Declaration of Performance on request — the documentation your principal contractor and Building Control will expect. Apply for a trade account at \u003ca href=\"\/pages\/bulk-orders\"\u003e\/pages\/bulk-orders\u003c\/a\u003e, or order on this collection at list price with the bulk-tier discount applied at checkout.\u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__personas\"\u003e\n    \u003cdiv class=\"pr-cbo__persona\"\u003e\n      \u003cspan class=\"pr-cbo__persona-tag\"\u003eInstaller \/ Glazier\u003c\/span\u003e\n      \u003ch3\u003eFive-plus units a week, tight margins\u003c\/h3\u003e\n      \u003cp\u003eIf you're running a steady job-list — replacement units, refurbs, FENSA-registered installs — every percentage point on unit price matters. Trade tier discounts cut 5-15% depending on volume; priority dispatch means you can quote a tighter lead time. Bring your weekly schedule and we'll set up a recurring delivery slot.\u003c\/p\u003e\n      \u003ca class=\"pr-cbo__btn\" href=\"\/pages\/bulk-orders\"\u003eApply for a trade account\u003c\/a\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"pr-cbo__persona\"\u003e\n      \u003cspan class=\"pr-cbo__persona-tag\"\u003eBuilder \/ Developer\u003c\/span\u003e\n      \u003ch3\u003eSite delivery, programme dates, Building Control\u003c\/h3\u003e\n      \u003cp\u003eNew-build sites, refurb projects, or property portfolio fit-outs — we deliver to programme with documented Declaration of Performance, UKCA marking, and BS EN 1279 evidence for Part L sign-off. Booked stillage delivery, hiab on enquiry, banksman to ground level. Direct line to a named account manager once the trade account is live.\u003c\/p\u003e\n      \u003ca class=\"pr-cbo__btn pr-cbo__btn--ghost\" href=\"\/pages\/contact-us\"\u003eTalk to an account manager\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__section\"\u003e\n    \u003ch2\u003eSix trade order types\u003c\/h2\u003e\n    \u003cp class=\"pr-cbo__lede\"\u003ePick the closest scenario to your job — each tile links to the relevant flagship or filtered range. All trade-priced with tier discount applied to 5+\/20+\/50+.\u003c\/p\u003e\n    \u003cdiv class=\"pr-cbo__finder\"\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/collections\/double-glazing\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M1 3h15v13H1zM16 8h4l3 3v5h-7V8z\"\u003e\u003c\/path\u003e\u003ccircle cx=\"5.5\" cy=\"18.5\" r=\"2.5\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"18.5\" cy=\"18.5\" r=\"2.5\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eReplacement DG units\u003c\/h3\u003e\n        \u003cp\u003eStock low-E argon DG, 24mm or 28mm spacer. The bread-and-butter of installer reorders.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/collections\/door-glass-units\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M3 9l9-7 9 7v11a2 2 0 01-2 2H5a2 2 0 01-2-2V9z\"\u003e\u003c\/path\u003e\u003cpath d=\"M9 22V12h6v10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eDoor glass batch orders\u003c\/h3\u003e\n        \u003cp\u003eComposite-door inserts, French-door pairs, patio-door panels. Stock sizes batch-shippable.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/collections\/triple-glazing\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2l1.5 4.5L18 8l-4.5 1.5L12 14l-1.5-4.5L6 8l4.5-1.5L12 2z\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 16l.75 2.25L8 19l-2.25.75L5 22l-.75-2.25L2 19l2.25-.75L5 16z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eTG for refurb upgrades\u003c\/h3\u003e\n        \u003cp\u003e44mm TG for whole-house refurb, Passive House retrofits, Part L compliance for major renovations.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/collections\/commercial-triple-glazing\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16\"\u003e\u003c\/path\u003e\u003cpath d=\"M1 21h22\"\u003e\u003c\/path\u003e\u003cpath d=\"M9 7h1M9 11h1M14 7h1M14 11h1M9 15v6M15 15v6\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eCommercial-spec batches\u003c\/h3\u003e\n        \u003cp\u003eShopfront \/ office TG batch orders. CWCT-compatible, units up to 2900×1500mm.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/collections\/conservatory-glass\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M3 9l9-7 9 7v11a2 2 0 01-2 2H5a2 2 0 01-2-2V9z\"\u003e\u003c\/path\u003e\u003cpath d=\"M9 22V12h6v10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eConservatory packs\u003c\/h3\u003e\n        \u003cp\u003eWhole-conservatory unit packs — roof + sides + doors at one price, scheduled to your build week.\u003c\/p\u003e\n      \u003c\/a\u003e\n      \u003ca class=\"pr-cbo__tile\" href=\"\/pages\/configure\"\u003e\n        \u003cspan class=\"pr-cbo__tile-icon\" aria-hidden=\"true\"\u003e\u003csvg width=\"28\" height=\"28\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M17 3a2.828 2.828 0 114 4L7.5 20.5 2 22l1.5-5.5L17 3z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\n        \u003ch3\u003eMixed \/ non-stock orders\u003c\/h3\u003e\n        \u003cp\u003eSchedule of mixed sizes \/ specs? Send the spreadsheet and we'll quote within 24 hours.\u003c\/p\u003e\n      \u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__section pr-cbo__measure\"\u003e\n    \u003ch2\u003eHow trade pricing works\u003c\/h2\u003e\n    \u003cp class=\"pr-cbo__lede\"\u003eTransparent tiered discount on volume.\u003c\/p\u003e\n    \u003cdiv class=\"pr-cbo__info\"\u003e\n      \u003cdiv class=\"pr-cbo__info-card\"\u003e\n        \u003ch3\u003eVolume tiers (no account required)\u003c\/h3\u003e\n        \u003col\u003e\n          \u003cli\u003e\n\u003cstrong\u003e5-19 units\u003c\/strong\u003e at one delivery address: 5% off list.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e20-49 units\u003c\/strong\u003e at one delivery address: 10% off list.\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003e50+ units\u003c\/strong\u003e at one delivery address: 15% off list (or quote-priced for genuinely large schedules).\u003c\/li\u003e\n          \u003cli\u003eSame-spec mixed-size orders count toward tiers. Mixed-spec orders combined if shipped on one delivery slot.\u003c\/li\u003e\n          \u003cli\u003eTier discount applied automatically at checkout — no code required.\u003c\/li\u003e\n        \u003c\/ol\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"pr-cbo__info-card\"\u003e\n        \u003ch3\u003eTrade account benefits (account required)\u003c\/h3\u003e\n        \u003cp\u003e\u003cstrong\u003ePriority production slot\u003c\/strong\u003e on your orders, \u003cstrong\u003enamed account manager\u003c\/strong\u003e with direct dial, \u003cstrong\u003escheduled delivery\u003c\/strong\u003e to your site or yard, \u003cstrong\u003ecompliance pack on every order\u003c\/strong\u003e (DoP, UKCA, BS EN 1279 evidence), and \u003cstrong\u003estillage return\u003c\/strong\u003e collected free on the next delivery.\u003c\/p\u003e\n        \u003cp\u003eAccount application is via the trade page.\u003c\/p\u003e\n        \u003cp\u003e\u003ca href=\"\/pages\/bulk-orders\"\u003eApply for a trade account →\u003c\/a\u003e\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__faq\"\u003e\n    \u003ch2\u003eBulk orders \u0026amp; trade — common questions\u003c\/h2\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: Do I need a trade account to get bulk pricing?\u003c\/h3\u003e\n      \u003cp\u003eNo. The 5%\/10%\/15% volume tier discount is open to anyone — it triggers automatically at checkout based on order quantity to one delivery address. The \u003cstrong\u003etrade account\u003c\/strong\u003e adds priority production, scheduled delivery, and a named account manager — useful for repeat ordering and main-contractor jobs, but not required for one-off bulk discounts.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: How long does a trade account application take?\u003c\/h3\u003e\n      \u003cp\u003eApply via the trade page. We don't offer credit terms (no NET 30): all orders are paid before production.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: Can you deliver to a site rather than my yard?\u003c\/h3\u003e\n      \u003cp\u003eYes — site delivery is standard for trade orders. Provide the site address, contact name and mobile, gate code if applicable, and the delivery window. We'll book a slot, send pre-delivery confirmation 24 hours out, and the driver will call 30 minutes before arrival. Hiab unload to ground level is available on enquiry for oversized commercial spec.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: Do you supply the compliance documentation pack?\u003c\/h3\u003e\n      \u003cp\u003eYes — on request, every trade order ships with a \u003cstrong\u003eDeclaration of Performance\u003c\/strong\u003e (BS EN 1279-5), \u003cstrong\u003eUKCA \/ CE mark certificate\u003c\/strong\u003e, \u003cstrong\u003eedge-seal durability test data\u003c\/strong\u003e, and unit-level \u003cstrong\u003eU-value and g-value\u003c\/strong\u003e figures. For commercial \/ fire-rated \/ acoustic spec we also issue the relevant performance test evidence (CWCT, BS 476, BS EN ISO 10140). Building Control sign-off pack for Part L 2026 compliance available on enquiry.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: What's the lead time on a trade bulk order?\u003c\/h3\u003e\n      \u003cp\u003eStock-spec bulk (replacement DG, standard door glass): \u003cstrong\u003e5–7 working days\u003c\/strong\u003e. Mixed-spec or non-stock bulk: \u003cstrong\u003e10-14 working days\u003c\/strong\u003e. Commercial spec (TG, oversized, acoustic): \u003cstrong\u003e10–14 working days\u003c\/strong\u003e. Programme-critical jobs can be expedited on enquiry.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: Can you hold stock for me on a long-running job?\u003c\/h3\u003e\n      \u003cp\u003eYes — for trade accounts on jobs running 8+ weeks, we'll batch-produce and warehouse on your behalf, releasing to delivery on your call-off schedule. There's a small holding fee after 30 days; no charge for the first 30. This is useful for phased refurbs, retirement village developments, or new-build sites where the window programme runs late.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: What's your minimum order quantity?\u003c\/h3\u003e\n      \u003cp\u003eNo minimum — single units welcome at list price. Bulk tier discounts kick in at 5+ units to one delivery address. For trade accounts, no minimum order value or annual commitment; the account just unlocks the priority production slot.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: How do you handle mis-spec or breakage on a bulk order?\u003c\/h3\u003e\n      \u003cp\u003eMis-spec at our end (wrong size, wrong build, wrong glass) is a free remake on the next production cycle, expedited to recover the programme. Breakage in transit is a free replacement; the courier carries the loss not you. Mis-measurement at your end means a remake at the same price again — and we'll sanity-check spec for free if you send measurements before producing.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"pr-cbo__faq-item\"\u003e\n      \u003ch3\u003eQ: Can I get a sample or test unit before placing a big order?\u003c\/h3\u003e\n      \u003cp\u003eYes. For trade accounts, single sample units at list price (no tier discount on the sample) with the full compliance pack, before committing to a programme order. Useful for matching existing glass spec, validating frame compatibility, or running a Building Control pre-check. Lead time on samples is the same as a single bespoke unit (5-7 working days for stock spec).\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__crosslinks\"\u003e\n    \u003ch2\u003eRelated ranges and trade resources\u003c\/h2\u003e\n    \u003cdiv class=\"pr-cbo__chip-row\"\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/pages\/bulk-orders\"\u003eTrade account application\u003c\/a\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/collections\/commercial-triple-glazing\"\u003eCommercial triple glazing\u003c\/a\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/collections\/double-glazing\"\u003eDouble-glazed units\u003c\/a\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/collections\/triple-glazing\"\u003eTriple-glazed units\u003c\/a\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/pages\/configure\"\u003eGlass configurator\u003c\/a\u003e\n      \u003ca class=\"pr-cbo__chip\" href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e\n    \u003c\/div\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"pr-cbo__sticky-cta\"\u003e\n    \u003cdiv\u003e\n      \u003ch3\u003eOrder weekly? Open a trade account.\u003c\/h3\u003e\n      \u003cp\u003ePriority dispatch, scheduled site delivery, and a named account manager. Helpline \u003ca href=\"tel:01173303057\"\u003e0117 330 3057\u003c\/a\u003e.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003ca class=\"pr-cbo__btn\" href=\"\/pages\/bulk-orders\"\u003eApply for a trade account\u003c\/a\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e\n","products":[{"product_id":"made-to-measure-double-glazed-unit-custom-size-31","title":"Made to Measure Double Glazed Unit - Custom Size (Residential Replacement)","description":"\u003ch2\u003eMade to Measure Double Glazed Unit — Residential Replacement\u003c\/h2\u003e\u003cp\u003eThe most common reason to order a \u003cstrong\u003emade-to-measure sealed unit\u003c\/strong\u003e is replacing a failed unit in an existing window frame. Misted glass, condensation between panes, or visible seal failure means the unit has lost its gas fill and insulating properties. Our custom-cut replacement units are made to your \u003cstrong\u003eexact dimensions\u003c\/strong\u003e by our partner factory.\u003c\/p\u003e\u003cp\u003eFor glaziers, this is bread-and-butter work. Measure the existing unit (width × height × thickness), order the replacement, and fit it when it arrives. Standard double-glazed units take 5–7 working days to make and dispatch.\u003c\/p\u003e\u003ch2\u003eYour Specification, Made to Measure\u003c\/h2\u003e\u003cp\u003eEvery made-to-measure unit is made to your exact dimensions by our partner factory. We offer the full range of glass types, coatings, gas fills, and spacer bar options — specify exactly what your project needs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum size:\u003c\/strong\u003e 2900mm × 1500mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass options:\u003c\/strong\u003e Clear, Low-E, toughened, laminated, obscure, tinted, solar control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas fill:\u003c\/strong\u003e Air, argon, or krypton\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacer bars:\u003c\/strong\u003e Aluminium or warm-edge composite\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall thickness:\u003c\/strong\u003e 14mm to 36mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eManufactured to \u003cstrong\u003eBS EN 1279\u003c\/strong\u003e. \u003cstrong\u003eFENSA registered\u003c\/strong\u003e, \u003cstrong\u003e10-year warranty\u003c\/strong\u003e, UK mainland delivery. Typical lead time: 5–7 working days.\u003c\/p\u003e\u003cp\u003eUse our \u003cstrong\u003eglass configurator\u003c\/strong\u003e to enter your exact dimensions and glass requirements for instant pricing.\u003c\/p\u003e","brand":"Pane Relief","offers":[{"title":"Default Title","offer_id":60899506880842,"sku":null,"price":108.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/double-glazed-sealed-unit-igu-product-cutaway_96471dcc-30fb-47d4-90f5-97802e8d8dac.webp?v=1773249496"},{"product_id":"shaped-triple-glazed-unit-custom-cut-42","title":"Shaped Triple Glazed Unit - Custom Cut (Residential Replacement)","description":"\u003ch2\u003eShaped Triple Glazed Unit — Period Homes \u0026amp; Arched Windows\u003c\/h2\u003e\u003cp\u003eVictorian fanlights, Edwardian arched tops, Gothic arch windows — \u003cstrong\u003eperiod properties have glazing shapes that standard rectangular units can't match\u003c\/strong\u003e. Our Shaped Triple Glazed Units are CNC-cut to any profile, delivering modern triple-glazed performance in frames that were designed for single panes over a century ago.\u003c\/p\u003e\u003cp\u003eWe work from templates (card, paper, or digital DXF files) to replicate the exact profile of your existing glazing. Whether it's a semi-circular fanlight, a pointed Gothic arch, or a curved-top sash, our CNC cutting equipment reproduces the shape with millimetre precision.\u003c\/p\u003e\u003ch2\u003eAny Shape, Full Performance\u003c\/h2\u003e\u003cp\u003eOur CNC glass cutting equipment handles virtually any shape with clean, accurate edges. The triple-glazed build-up is identical to our rectangular units — three panes of precision-cut glass with Low-E coatings, argon gas fill, and warm-edge spacer bars, delivering the same U-value performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShapes:\u003c\/strong\u003e Arches, semi-circles, circles, triangles, trapezoids, Gothic arches, octagons, ovals, and custom profiles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum diameter\/width:\u003c\/strong\u003e ~2000mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemplates:\u003c\/strong\u003e Card, paper, or digital DXF accepted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eU-value:\u003c\/strong\u003e Equivalent to rectangular unit of same build-up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass options:\u003c\/strong\u003e Toughened, laminated, Low-E, obscure\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMade to \u003cstrong\u003eBS EN 1279\u003c\/strong\u003e by our partner factory. \u003cstrong\u003eFENSA registered\u003c\/strong\u003e, \u003cstrong\u003e10-year warranty\u003c\/strong\u003e, UK mainland delivery.\u003c\/p\u003e\u003cp\u003eFor shaped units, contact our technical team with your template or DXF file, or use our \u003cstrong\u003eglass configurator\u003c\/strong\u003e for standard shapes with instant pricing.\u003c\/p\u003e","brand":"Pane Relief","offers":[{"title":"Default Title","offer_id":60899511042378,"sku":null,"price":108.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/triple-glazed-insulated-glass-unit-igu-cutaway.webp?v=1773313157"},{"product_id":"24mm-clear-double-glazed-unit","title":"24mm Clear Double Glazed Unit (Argon Filled)","description":"\n\u003cp class=\"pr-flagship__lede\"\u003e\u003cstrong\u003eThe default replacement sealed unit for UK homes\u003c\/strong\u003e. A 24mm clear double-glazed unit (4mm clear \/ 16mm argon-filled cavity \/ 4mm clear) is the workhorse of British replacement glazing — fitted to the majority of post-2002 PVCu, aluminium, and timber frames, and the unit most failed (misted, blown, condensation-streaked) units in pre-2015 stock are being replaced with.\u003c\/p\u003e\n\n\u003cp\u003eThis flagship is built on Pilkington-grade 4mm float glass, a 16mm warm-edge spacer, and a 90% argon fill (factory-tested at 92-95% on initial fill, with 1% per annum loss assumed under BS EN 1279-2). Krypton fill is available as a custom-configure option for slim-cavity variants — for 24mm symmetric units, argon delivers the better cost-per-watt envelope.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specification\u003c\/h2\u003e\n\u003ctable class=\"pr-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eOverall thickness\u003c\/th\u003e\n\u003ctd\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBuild-up\u003c\/th\u003e\n\u003ctd\u003e4mm clear float \/ 16mm cavity \/ 4mm clear float\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eGas fill\u003c\/th\u003e\n\u003ctd\u003e90% argon (BS EN 1279-3 compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpacer bar\u003c\/th\u003e\n\u003ctd\u003eWarm-edge composite (Edgetech Super Spacer or equivalent)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eU-value (centre-pane)\u003c\/th\u003e\n\u003ctd\u003e1.4 W\/m²K\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eg-value (solar transmittance)\u003c\/th\u003e\n\u003ctd\u003e0.72\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLight transmittance (LT)\u003c\/th\u003e\n\u003ctd\u003e~80%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eBS EN 1279 (parts 1, 2, 3, 5, 6)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eManufactured\u003c\/th\u003e\n\u003ctd\u003eUK, FENSA-registered supply chain\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhere this unit is the right call\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLike-for-like replacement\u003c\/strong\u003e of a failed (misted\/blown) post-2002 unit where the frame is sound and the existing rebate accepts a 24mm unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal partitions, porches, and unheated outbuildings\u003c\/strong\u003e where U-value isn't critical and 80% light transmittance matters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eListed-building consents that permit DG\u003c\/strong\u003e where the unit must read as a clear single-pane sightline (24mm clear hides cavity from most viewing angles better than tinted\/coated alternatives).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBay windows, dormer cheeks, and small-aperture casements\u003c\/strong\u003e where the 600 × 400 stock size lands without trimming.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor applications where U-value is the priority (Building Regs Approved Document L compliance, new-build, A-rated specification), the \u003ca href=\"\/products\/28mm-low-e-a-rated-double-glazed-unit\"\u003e\u003cstrong\u003e28mm Low-E A-Rated\u003c\/strong\u003e\u003c\/a\u003e variant is the recommended upgrade — same form factor, U-value 1.1 W\/m²K, planitherm soft-coat.\u003c\/p\u003e\n\n\u003cp\u003eFor acoustic applications (railway lines, flight paths, A-roads), the \u003ca href=\"\/pages\/acoustic-glass\"\u003e\u003cstrong\u003eacoustic glass topical page\u003c\/strong\u003e\u003c\/a\u003e walks the Rw \/ dB-reduction math and links to the laminated alternatives.\u003c\/p\u003e\n\n\u003ch2\u003eStock sizes and pricing\u003c\/h2\u003e\n\u003cp\u003eFive UK-standard stock sizes are listed below. Each is dispatched 5-7 working days from order via our FENSA-registered manufacturing partners. Custom sizes — including shaped, tinted, low-E, toughened, and acoustic variants — are priced via the \u003ca href=\"\/pages\/configure\"\u003e\u003cstrong\u003eonline glass configurator\u003c\/strong\u003e\u003c\/a\u003e with the same per-m² rate as the stock units (no custom-size premium).\u003c\/p\u003e\n\n\u003cp\u003eTrade accounts: log in to your account to see your tiered pricing — volume discount applies at 5+ units per order.\u003c\/p\u003e\n\n\u003ch2\u003eCertification and standards\u003c\/h2\u003e\n\u003cp\u003eEvery unit ships with a CE\/UKCA mark referencing BS EN 1279, a unique IGU stamp inside the cavity (visible at edge), and a Declaration of Performance available on request. Argon fill is tested per BS EN 1279-3 (initial fill ≥85%, annual loss \u0026lt;1% under EN-1279-2 accelerated weathering).\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWill this fit my existing frame?\u003c\/h3\u003e\n\u003cp\u003eCheck the rebate depth (the slot the glass sits in). A 24mm unit needs a rebate depth of at least 24mm + 3mm clearance = 27mm. Most post-2002 PVCu and aluminium frames accept this. Pre-2000 timber casements often had 20mm rebates designed for single glazing — those may need re-rebating or stepping to a slim 14mm Krypton unit.\u003c\/p\u003e\n\n\u003ch3\u003eHow long does a sealed unit last?\u003c\/h3\u003e\n\u003cp\u003eUK industry average is 15-25 years before edge-seal failure causes misting. Our units carry a 10-year manufacturer's warranty on seal integrity (BS EN 1279-2 accelerated-weathering tested). Argon retention is warranted to 80% of initial fill at 10 years.\u003c\/p\u003e\n\n\u003ch3\u003eArgon vs no-gas: does it matter?\u003c\/h3\u003e\n\u003cp\u003eYes. A 24mm air-filled unit has a centre-pane U-value of ~1.8 W\/m²K. The argon fill drops that to 1.4 — about a 22% improvement in winter heat retention. The £\/W improvement of argon is one of the best in residential glazing.\u003c\/p\u003e\n\n\u003ch3\u003eCan I get this with a low-E coating?\u003c\/h3\u003e\n\u003cp\u003eYes — use the configurator to add a Pilkington K or Optitherm soft-coat. The price uplift is computed live. Alternatively, the dedicated \u003ca href=\"\/products\/28mm-low-e-a-rated-double-glazed-unit\"\u003e28mm Low-E A-Rated flagship\u003c\/a\u003e is a single-button purchase.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the lead time for shaped or custom sizes?\u003c\/h3\u003e\n\u003cp\u003eStock sizes: 5-7 working days. Custom rectangular double glazing: 5–7 working days. Shaped (arched, raked, circular): 10-14 working days. Toughened: 10–14 working days. All times exclude national-holiday weeks.\u003c\/p\u003e\n\n\u003ch3\u003eDo you fit, or supply only?\u003c\/h3\u003e\n\u003cp\u003eWe supply only — but we can recommend FENSA-registered fitters in your postcode area. Contact the helpline (9am–5pm, Mon–Fri) for fitter introductions. Supply + fit packages route via partner installers; \u003ca href=\"\/pages\/contact-us\"\u003econtact us\u003c\/a\u003e for a quote.\u003c\/p\u003e\n","brand":"Pane Relief","offers":[{"title":"600 × 400 mm","offer_id":61851582431562,"sku":"DG24-CLR-600x400","price":109.73,"currency_code":"GBP","in_stock":true},{"title":"800 × 600 mm","offer_id":61851582464330,"sku":"DG24-CLR-800x600","price":111.46,"currency_code":"GBP","in_stock":true},{"title":"1000 × 800 mm","offer_id":61851582497098,"sku":"DG24-CLR-1000x800","price":118.08,"currency_code":"GBP","in_stock":true},{"title":"1200 × 1000 mm","offer_id":61851582529866,"sku":"DG24-CLR-1200x1000","price":177.12,"currency_code":"GBP","in_stock":true},{"title":"1500 × 1200 mm","offer_id":61851582562634,"sku":"DG24-CLR-1500x1200","price":265.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/double-glazed-sealed-unit-igu-product-cutaway_54370c02-2440-4a9f-8880-a7b3c20db6b3.webp?v=1778952471"},{"product_id":"28mm-low-e-a-rated-double-glazed-unit","title":"28mm Low-E A-Rated Double Glazed Unit","description":"\n\u003cp class=\"pr-flagship__lede\"\u003e\u003cstrong\u003eThe A-rated upgrade\u003c\/strong\u003e. A 28mm low-E argon-filled sealed unit (4mm clear \/ 20mm cavity with planitherm soft-coat \/ 4mm clear) delivers a centre-pane U-value of 1.1 W\/m²K and a Window Energy Rating of A under BFRC certification — the spec UK building inspectors expect for Approved Document L compliance on replacement glazing.\u003c\/p\u003e\n\n\u003cp\u003e\"Low-E\" means low-emissivity: a microscopically-thin metallic-oxide coating on the inside face of the inner pane that reflects long-wave heat radiation back into the room while letting visible light through. The Pilkington K-Glass (hard-coat) and Optitherm S1 \/ Planitherm Total+ (soft-coat) families are the UK-standard options — soft-coat performs better thermally but must be sealed inside the cavity (it oxidises if exposed to air, which is why it always faces the cavity, never the room).\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specification\u003c\/h2\u003e\n\u003ctable class=\"pr-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eOverall thickness\u003c\/th\u003e\n\u003ctd\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBuild-up\u003c\/th\u003e\n\u003ctd\u003e4mm clear \/ 20mm argon cavity \/ 4mm clear with Planitherm Total+ soft-coat (face 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eGas fill\u003c\/th\u003e\n\u003ctd\u003e90% argon (BS EN 1279-3)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpacer bar\u003c\/th\u003e\n\u003ctd\u003eWarm-edge composite, black (low thermal bridging)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eU-value (centre-pane)\u003c\/th\u003e\n\u003ctd\u003e1.1 W\/m²K\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eU-value (whole window with PVCu frame)\u003c\/th\u003e\n\u003ctd\u003e1.4 W\/m²K\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eg-value\u003c\/th\u003e\n\u003ctd\u003e0.62\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLight transmittance\u003c\/th\u003e\n\u003ctd\u003e~78%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBFRC Window Energy Rating\u003c\/th\u003e\n\u003ctd\u003eA (when fitted in a compliant frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eBS EN 1279, BS EN 673 (U-value), BS EN 410 (light\/solar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhere this unit is required\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilding Regs Approved Document L\u003c\/strong\u003e — Part L1B requires replacement window units to meet a U-value of 1.4 W\/m²K or better. A 28mm Low-E argon unit clears that with 0.3 W\/m²K of headroom.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew build and significant extensions\u003c\/strong\u003e — Local building control will check that replacement glazing in extensions ≥ 30% of floor area meets Part L. This unit is the default A-rated spec.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCold-room retrofits\u003c\/strong\u003e — North-facing bedrooms, single-glazed conservatories being upgraded, rooms above unheated garages. The 1.1 U-value cuts radiant heat loss roughly 22% vs a standard 24mm argon unit.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEPC band improvement\u003c\/strong\u003e — Upgrading to A-rated glazing typically lifts an EPC by 5-10 points depending on the existing baseline. For landlords, this is a route to MEES C compliance ahead of the 2028 deadline.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEnergy-rated glass selection in depth is covered on the \u003ca href=\"\/pages\/energy-rated-glass-units\"\u003e\u003cstrong\u003eenergy-rated glass topical page\u003c\/strong\u003e\u003c\/a\u003e — U-value vs g-value tradeoffs, BFRC vs CE-label differences, and how the WER calculation actually works.\u003c\/p\u003e\n\n\u003ch2\u003eStock sizes and pricing\u003c\/h2\u003e\n\u003cp\u003eFive UK-standard stock sizes are below. Each is dispatched 5-7 working days from a FENSA-registered manufacturing partner. Custom sizes via the \u003ca href=\"\/pages\/configure\"\u003e\u003cstrong\u003econfigurator\u003c\/strong\u003e\u003c\/a\u003e at the same per-m² rate. Trade accounts see tiered pricing on login.\u003c\/p\u003e\n\n\u003ch2\u003eCertification and standards\u003c\/h2\u003e\n\u003cp\u003eEvery unit ships with a UKCA mark, a unique IGU edge-stamp identifying the manufacturer batch, and a Declaration of Performance referencing BS EN 1279 (parts 1, 2, 3, 5, 6). The Planitherm coating carries Saint-Gobain's batch certification. BFRC ratings are issued on the whole-window assembly (frame + glass); the glass alone contributes the U=1.1 centre-pane figure, with the frame contributing the rest.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eWhat's the difference between A-rated, B-rated, and C-rated glass?\u003c\/h3\u003e\n\u003cp\u003eThe BFRC Window Energy Rating combines U-value (heat loss), g-value (solar gain), and L-factor (air leakage). A-rated requires WER ≥ 0 — meaning solar gain offsets heat loss over a year. C-rated allows WER -20. A 28mm Low-E argon unit in a standard PVCu frame is the simplest path to an A rating.\u003c\/p\u003e\n\n\u003ch3\u003eSoft-coat vs hard-coat low-E?\u003c\/h3\u003e\n\u003cp\u003eHard-coat (Pilkington K) is pyrolytic — fused into the glass at the float-line, durable, can be toughened, slightly worse U-value (~1.5 W\/m²K in a 28mm unit). Soft-coat (Planitherm\/Optitherm) is sputter-deposited, higher performance (1.1 W\/m²K), must live inside the sealed cavity. This flagship uses Planitherm Total+ on face 3.\u003c\/p\u003e\n\n\u003ch3\u003eWill fitting A-rated glass alone improve my EPC?\u003c\/h3\u003e\n\u003cp\u003eYes — replacement glazing scores under \"windows\" in the EPC RdSAP model. The improvement depends on the previous baseline: replacing single-glazed sash windows with A-rated DG can add 8-12 EPC points; replacing first-generation DG (1990s) typically adds 3-5 points.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use this in a listed building?\u003c\/h3\u003e\n\u003cp\u003eListed-building consent is local-authority-dependent. Conservation officers usually accept slim or low-iron variants where sightline matters. The 28mm Low-E is too thick for most original Georgian sash rebates — for those, consider the \u003ca href=\"\/pages\/slim-double-glazing\"\u003eslim Krypton variant\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eDoes the Planitherm coating tint the glass?\u003c\/h3\u003e\n\u003cp\u003eSlightly. There's a faint neutral\/bronze haze visible at sharp viewing angles, particularly with the sun behind you. From inside looking out, the tint is invisible. Light transmittance drops from ~80% (uncoated) to ~78% — imperceptible in normal use.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty?\u003c\/h3\u003e\n\u003cp\u003e10-year manufacturer warranty on edge-seal integrity (BS EN 1279-2 weathering) and 10-year guarantee on coating integrity (Planitherm batch certification). Argon retention warranted to 80% of initial fill at 10 years.\u003c\/p\u003e\n","brand":"Pane Relief","offers":[{"title":"600 × 400 mm","offer_id":61851582660938,"sku":"DG28-LOWE-600x400","price":109.73,"currency_code":"GBP","in_stock":true},{"title":"800 × 600 mm","offer_id":61851582693706,"sku":"DG28-LOWE-800x600","price":111.46,"currency_code":"GBP","in_stock":true},{"title":"1000 × 800 mm","offer_id":61851582726474,"sku":"DG28-LOWE-1000x800","price":121.92,"currency_code":"GBP","in_stock":true},{"title":"1200 × 1000 mm","offer_id":61851582759242,"sku":"DG28-LOWE-1200x1000","price":182.88,"currency_code":"GBP","in_stock":true},{"title":"1500 × 1200 mm","offer_id":61851582792010,"sku":"DG28-LOWE-1500x1200","price":274.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/double-glazed-sealed-unit-igu-product-cutaway_fc56842d-dbfd-4b3b-8927-69d95e679010.webp?v=1778952473"},{"product_id":"36mm-standard-triple-glazed-unit","title":"36mm Standard Triple Glazed Unit (Argon)","description":"\n\u003cp class=\"pr-flagship__lede\"\u003e\u003cstrong\u003eTwo sealed cavities, three panes, U-value 0.8 W\/m²K\u003c\/strong\u003e. A 36mm triple-glazed unit (4mm \/ 12mm argon \/ 4mm \/ 12mm argon \/ 4mm) is the Scandinavian default — the spec that goes into Norwegian, Finnish, and German new-build as the entry-level energy spec. In the UK, it's the upgrade path from A-rated double when winter heat loss matters more than installed cost.\u003c\/p\u003e\n\n\u003cp\u003eTriple glazing's value isn't just lower U — it's a warmer inner-pane surface temperature. With external air at -2°C and interior at 21°C, a double-glazed unit's interior pane sits around 11°C (touch-cold). A triple-glazed unit's interior pane sits around 17°C — close enough to room temperature that radiant chill against the body, and condensation on cold glass, both effectively disappear.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specification\u003c\/h2\u003e\n\u003ctable class=\"pr-spec-table\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eOverall thickness\u003c\/th\u003e\n\u003ctd\u003e36mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eBuild-up\u003c\/th\u003e\n\u003ctd\u003e4mm clear \/ 12mm argon \/ 4mm clear \/ 12mm argon \/ 4mm clear\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eCavities\u003c\/th\u003e\n\u003ctd\u003e2 × 12mm argon-filled (BS EN 1279-3)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpacer bars\u003c\/th\u003e\n\u003ctd\u003e2 × warm-edge composite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eU-value (centre-pane)\u003c\/th\u003e\n\u003ctd\u003e0.8 W\/m²K (with low-E on inner face)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eU-value (uncoated)\u003c\/th\u003e\n\u003ctd\u003e1.0 W\/m²K\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eg-value\u003c\/th\u003e\n\u003ctd\u003e0.55\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eLight transmittance\u003c\/th\u003e\n\u003ctd\u003e~71%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e~30 kg\/m² (vs ~20 kg\/m² for 24mm DG — confirm frame load capacity)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eBS EN 1279, BS EN 673, BS EN 410\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhere triple glazing is the right call\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCold-climate orientation\u003c\/strong\u003e — north-facing bedrooms, exposed elevations, top-floor rooms under uninsulated lofts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassivhaus and EnerPHit retrofits\u003c\/strong\u003e — Passivhaus Institut requires whole-window U ≤ 0.8 W\/m²K. A 36mm triple unit in a thermally-broken aluminium or timber frame is the standard route.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAcoustic-plus-thermal stacks\u003c\/strong\u003e — combine triple panes with asymmetric thicknesses (4-12-6-12-4 or laminated outer) for Rw 38-44 dB while maintaining 0.8 U-value. See the \u003ca href=\"\/products\/acoustic-triple-glazed-unit-44db-noise-reduction-16\"\u003eacoustic triple variant\u003c\/a\u003e for the 44dB spec.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeat-pump and MVHR retrofits\u003c\/strong\u003e — air-source heat pumps work most efficiently at low flow temperatures (35-45°C). Triple glazing's lower fabric heat loss lets the heat pump hold setpoint without bumping flow temp.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe full thermal-vs-cost analysis is on the \u003ca href=\"\/collections\/triple-glazing\"\u003e\u003cstrong\u003etriple glazing topical page\u003c\/strong\u003e\u003c\/a\u003e — including the payback-period math, frame-load implications, and when triple genuinely outperforms A-rated double.\u003c\/p\u003e\n\n\u003ch2\u003eStock sizes and pricing\u003c\/h2\u003e\n\u003cp\u003eFive UK-standard stock sizes below. Dispatch 10–14 working days. Custom sizes including shaped, oversized (\u0026gt;1500mm any dimension), and laminated variants are priced via the \u003ca href=\"\/pages\/configure\"\u003e\u003cstrong\u003econfigurator\u003c\/strong\u003e\u003c\/a\u003e. Trade accounts see tiered pricing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFrame load note:\u003c\/strong\u003e triple-glazed units are ~50% heavier than double-glazed equivalents. Confirm hinge capacity, sash weight rating, and reinforcement spec on your frames before ordering. Most modern PVCu profiles are rated for triple — older or budget profiles may need steel reinforcement.\u003c\/p\u003e\n\n\u003ch2\u003eCertification and standards\u003c\/h2\u003e\n\u003cp\u003eUKCA-marked, BS EN 1279 compliant across all six parts.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003ch3\u003eIs triple glazing worth the cost in the UK?\u003c\/h3\u003e\n\u003cp\u003eFor new-build and major retrofit: yes, especially with heat pumps where lower fabric loss directly improves COP. For straight replacement on a Victorian terrace: the payback period is long (15-25 years) and A-rated double often delivers 80% of the benefit at 60% of the cost. Use the configurator's energy-saving estimator for your specific situation.\u003c\/p\u003e\n\n\u003ch3\u003eWill my existing frame take a 36mm unit?\u003c\/h3\u003e\n\u003cp\u003eMost modern PVCu and aluminium frames are designed for 28mm units. Some 70mm-depth systems accept 36mm with no modification; others need a deeper bead or full reglaze-bead replacement. Send a frame profile photo via \u003ca href=\"\/pages\/contact-us\"\u003eour contact form\u003c\/a\u003e for a compatibility check.\u003c\/p\u003e\n\n\u003ch3\u003eWhy is g-value lower than double glazing?\u003c\/h3\u003e\n\u003cp\u003eEach pane reflects and absorbs some solar radiation. Three panes reflect\/absorb more than two. The triple-glazed g-value of ~0.55 vs the A-rated double's ~0.62 means slightly less passive solar heat gain in winter — for south-facing principal rooms in a UK climate, this is genuinely a small downside.\u003c\/p\u003e\n\n\u003ch3\u003eArgon vs krypton vs xenon?\u003c\/h3\u003e\n\u003cp\u003eFor 12mm cavities (this unit), argon is optimal — krypton's benefit appears only in cavities ≤ 8mm. For slim-cavity triple (10-10mm), krypton is worth the premium. Xenon is rarely cost-justified outside specialist Passivhaus components.\u003c\/p\u003e\n\n\u003ch3\u003eNoise reduction vs double?\u003c\/h3\u003e\n\u003cp\u003eMarginal — Rw of ~33 dB vs A-rated double's ~31 dB. If acoustic is the priority, asymmetric pane thicknesses or laminated panes deliver much more than adding a third pane. See the dedicated acoustic flagships.\u003c\/p\u003e\n\n\u003ch3\u003eCondensation on the outside?\u003c\/h3\u003e\n\u003cp\u003eYes, occasionally — and counterintuitively, it's a sign the glass is performing well. With triple glazing, the outer-pane surface stays close to outdoor dew point on clear cold nights (because almost no heat is leaking out to warm it). Outside-face dew is a feature, not a defect.\u003c\/p\u003e\n","brand":"Pane Relief","offers":[{"title":"600 × 400 mm","offer_id":61851583054154,"sku":"TG36-STD-600x400","price":114.34,"currency_code":"GBP","in_stock":true},{"title":"800 × 600 mm","offer_id":61851583086922,"sku":"TG36-STD-800x600","price":120.67,"currency_code":"GBP","in_stock":true},{"title":"1000 × 800 mm","offer_id":61851583119690,"sku":"TG36-STD-1000x800","price":133.44,"currency_code":"GBP","in_stock":true},{"title":"1200 × 1000 mm","offer_id":61851583152458,"sku":"TG36-STD-1200x1000","price":200.16,"currency_code":"GBP","in_stock":true},{"title":"1500 × 1200 mm","offer_id":61851583185226,"sku":"TG36-STD-1500x1200","price":300.24,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/3515\/2458\/files\/triple-glazed-insulated-glass-unit-igu-cutaway_758c92a7-342a-41e9-9e33-653ba1e180ac.webp?v=1778952476"}],"url":"https:\/\/panerelief.co.uk\/collections\/bulk-orders.oembed","provider":"Pane Relief","version":"1.0","type":"link"}