Replacement double-glazed and triple-glazed units, made to measure for UK retrofit. Configure your unit below: choose glass type, cavity width, gas fill (argon or krypton), performance options (low-E, acoustic, safety), and frame compatibility. Get an instant price, save your configuration, and order online — typically dispatched within 5 working days.

Every unit is manufactured to BS EN 1279 and supplied through our FENSA-registered network. If you're not sure of the spec, our glass calculator recommends one based on your window's current performance and the room it sits in.

Trade and Bulk Glazing — UK Account Pricing, Lead Times, and Wholesale Supply

Pane Relief supplies replacement double-glazed and triple-glazed units, toughened and laminated safety glass, and bespoke shapes to UK trade buyers: installers, builders, glaziers, FM contractors, housing associations, and developers. Trade accounts unlock net pricing on every product in the catalogue, NET 30 payment terms, bulk-tier discounts from 10 units, dedicated technical support, and direct-to-site delivery. This page covers how to open an account, what terms you qualify for, and how bulk orders are priced, scheduled, and delivered.

Trade-buyer specifications buyers compare on

The attributes below are the predicates that distinguish a workable trade supplier from a transactional one. Pane Relief's positioning on each is published — there is no opaque negotiation needed before you can compare.

Predicate Pane Relief trade Typical UK wholesaler
Minimum order to open account None — any verified UK trade £1,000 first order common
Payment terms (post-credit-clear) NET 30 from invoice NET 30 with discount tier; some still pro-forma
Bulk-tier breaks 10 / 25 / 50 units (5% / 8% / 12%) Negotiated; rarely published
Stock-spec dispatch 5 working days 5–10 working days
Direct-to-site delivery UK mainland, 1–2 working days post-dispatch Hub-and-spoke; site delivery extra
Manufacturing standard BS EN 1279-1 to -6 sealed units; CE marked Varies — confirm before order
Safety-glass standards BS EN 12150 toughened; BS EN 14449 laminated Same where supplier is reputable
Compliance documentation BS EN 1279 declaration per order; CE mark on label On request
Installer guarantee passthrough 10 years on sealed-unit edge seal 5–10 years; check terms
Bespoke shapes and sizes To template; 7–10 working day lead Available but premium pricing
FENSA network supply Yes — direct to FENSA installers Yes (most wholesalers)

How trade accounts are used

Installers and glaziers — recurring small-batch orders

For FENSA-registered installers running a residential book of business, the day-to-day order pattern is small-batch replacement glazing: a misted unit here, a draught-failure unit there, occasional 5–10 unit refurbishments. The pricing-and-time wins come from speed of dispatch and reliable measurement-to-fit accuracy, not from headline bulk discounts. Trade Tier 1 unlocks the 12% net price on standard specs immediately; the configurator handles the spec capture without phone-tag; the typical lead time of 5 working days lets the installer hold a 2-week-out booking schedule. For installers running 50+ units a month, Tier 2 kicks in automatically once 12-month spend clears £25,000.

Developers and main contractors — programme-driven supply

For new-build and large-refurb developers, the unit price is one of three numbers that matter; the other two are delivery against programme and compliance documentation. Trade accounts on Tier 2+ run a 4-week rolling manufacturing forecast: the developer submits a unit schedule by drawing reference, Pane Relief manufactures and delivers against the programme, and Building Control receives a single batch of BS EN 1279-1 to -6 declarations rather than per-order paperwork. This is materially easier for the contractor's QA file than a one-off supplier-chain trail. Pricing on programme supply is negotiated bespoke; ballpark is Tier 3 discount on 100+ units.

Facilities management and housing associations — bulk replacement programmes

Registered Social Landlords (RSLs) and FM contractors running planned-preventative replacement programmes operate on a different cadence again: typically 200–500 units a year across a stock portfolio, with site survey, dispatch, and installation scheduled in waves. Pane Relief handles this through a framework-supply agreement, which fixes pricing for 12–24 months against a forecast volume, with quarterly volume reconciliation. This works for RSLs because it removes the per-order tender overhead and gives the supply chain predictable manufacturing-line allocation. Framework supply is gated by procurement-team approval and a one-off financial-stability review; once in place, the day-to-day order flow runs through the same trade portal as smaller accounts.

Pane Relief trade vs typical UK glass wholesaler

The UK trade glazing market has three structural archetypes: the national wholesale supplier (large-volume, depot-based, slower lead times, opaque pricing), the regional unit assembler (faster, mid-range, geography-bound), and the direct-to-installer manufacturer (Pane Relief's model — manufacturing-aligned pricing visibility, configurator-led order capture, UK-mainland courier delivery). Each suits a different buyer type.

Aspect National wholesaler Regional assembler Pane Relief (direct)
Pricing visibility Quote-on-request Trade list price Live, logged-in at storefront / configurator
Order capture Phone / email; rep relationship Phone / email; some online Configurator; phone for bespoke
Lead time (stock spec) 7–14 working days 3–7 working days local 5 working days nationwide
Geographic coverage UK-wide via depot network One region typically UK mainland direct ex-works
Minimum order Pallet quantities common Single unit possible Single unit; bulk tiers from 10
Compliance docs On request On request Issued with every order

For an installer running mixed-spec replacement work, the determining variable is usually per-order overhead, not per-unit price. The wholesaler model assumes a large rep-driven order at depot-collection pricing; the direct-manufacturer model assumes a configurator-driven order with delivery built into the price. The break-even crosses around 8–10 units per order: below that, direct is faster and lower-overhead; above 25–30 units to a single site, the wholesaler's depot-and-rep model competes hard. Trade buyers running both order profiles often hold accounts at one of each.

Trade bodies and certification references

The trade bodies, certification schemes, and statutory references below underpin every commercial supply relationship in UK glazing. Pane Relief's trade terms align with each.

  • FENSA — Fenestration Self-Assessment Scheme. Pane Relief supplies directly to FENSA-registered installers; installation by a registered firm self-certifies Building Regs compliance (Approved Documents K and L) for replacement windows in dwellings.
  • Glass and Glazing Federation (GGF) — UK trade body publishing the GGF Glazing Manual, technical bulletins, and the GGF Deposit Protection scheme. Many trade buyers reference GGF documents in their own QA process.
  • BSI Group — publisher of the manufacturing standards (BS EN 1279-1 to -6 for sealed units; BS EN 12150 for toughened; BS EN 14449 for laminated). Trade accounts requiring full compliance documentation receive certificates referencing these standards.
  • British Board of Agrément (BBA) — third-party certification for proprietary glazing systems and PAS 24-tested frame-glass assemblies. Trade-supplied components into PAS 24 builds carry BBA references where applicable.
  • Approved Document L — Conservation of fuel and power — the U-value floor for replacement glazing in dwellings (currently 1.4 W/m²K for windows in England). Drives the spec for any trade order destined for residential retrofit.
  • Approved Document K — Protection from falling, collision and impact — safety-glass requirements for critical locations. Trade orders for low-level glazing must specify to K.
  • Planning Portal — consolidated guidance on conservation areas, Listed Building consents, and Approved Document Q (Security in dwellings). Trade orders into heritage or new-build dwelling stock must reference these.

Frequently asked questions about trade and bulk glazing

How do I open a Pane Relief trade account?
Submit a trade-account application via the contact page with your company name, registered address, VAT number, and either a Companies House number (for limited companies) or evidence of trading (for sole traders and partnerships). Approval typically takes 1–2 working days. First orders run pro-forma; NET 30 unlocks after three on-time settlements and a credit reference. There is no minimum order to open the account.
What discount do I get on the public storefront price?
Trade Tier 1 is roughly 12% below storefront on standard double-glazed units and 15% on triple-glazed. Tier 2 (12-month rolling spend over £25,000) adds 5% on top. Tier 3 is bespoke for framework supply and main-contractor accounts. The discount applies automatically at checkout when you are logged in — pricing is not negotiated per order.
What are your payment terms?
Pro-forma for the first three orders. NET 30 from invoice date once the account clears a credit reference (Experian Business or Creditsafe). Late settlement attracts statutory interest under the Late Payment of Commercial Debts (Interest) Act 1998 at Bank of England base rate plus 8%, charged monthly on overdue balances.
Do you offer bulk discounts on top of the trade discount?
Yes. Bulk tiers compound with the trade discount: 5% on 10–24 units, 8% on 25–49 units, 12% on 50+ units of the same configuration. An additional 3% applies if the order is dispatched in a single consignment rather than split deliveries. Bespoke shapes are priced individually; bulk discounts apply when the order is for one project rather than mixed one-offs.
What is the lead time for a trade bulk order of 50 units?
Standard double-glazed units in clear-argon spec: 5 working days dispatch from order confirmation. Performance specs (low-E, A-rated): 5–7 working days. Triple-glazed: 7 working days. Acoustic laminated or toughened safety: 7–10 working days. Programme orders running against a 4-week rolling forecast skip the dispatch-queue uncertainty and align manufacture with the installer's site programme.
Do you deliver direct to site?
Yes. UK mainland delivery is included in trade pricing and runs 1–2 working days from dispatch on courier service. Direct-to-site is available against an installer's named contact for off-load and signature; the courier waits up to 30 minutes on site for a pre-arranged delivery window. Northern Ireland, Channel Islands, and Highlands are quoted separately by postcode.
Can I order bespoke shapes through a trade account?
Yes. Bespoke and shaped glass (arched, raked, raked-and-arched, true ellipse, splayed) is manufactured to template at trade pricing on 7–10 working day lead times. Send dimensions and a CAD drawing or full-size template to the trade desk. Trade accounts get a 15% discount on the published bespoke base rate; bulk discounts do not stack on bespoke since each piece is one-off.
What manufacturing and compliance documentation do you supply?
Every trade order ships with: a BS EN 1279 declaration referencing the manufacturing batch; a CE-marked unit label per BSI; the relevant safety-glass certificate (BS EN 12150 for toughened, BS EN 14449 for laminated) where the spec triggers it; and the U-value calculation per Approved Document L on request. Framework-supply accounts receive consolidated batch documentation aligned to the contractor's QA file.
Do you supply housing associations and FM contractors under framework agreements?
Yes. Framework supply is available for Registered Social Landlords (RSLs), FM contractors, and main-contractor accounts running planned-preventative replacement programmes. Pricing is fixed for 12–24 months against a forecast volume with quarterly reconciliation. Framework supply is gated by procurement approval and a one-off financial-stability review; the day-to-day order flow runs through the standard trade portal.
FENSA Registered BS EN 1279 Certified 10-Year Guarantee