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No Minimum Order
4.3/5 from 27+ reviews

Window Repairs

Replacement sealed units and glass for window repair work. Whether it's a single failed unit in a domestic property or a multi-window contract for a housing association, we supply precisely what you need — manufactured to order with same-week dispatch.
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FENSA Registered
BS EN 1279 Certified
Nationwide Delivery
Same-Week Dispatch
4.3/5 rating from 27+ reviews
Trade Pricing Available

Window repair is your bread and butter. You need a glass supplier who delivers the right unit, on time, every time. That's exactly what we do.

Expert Glazing, Done Right

We're not a national call centre. We're local glaziers who take pride in every job.

Precision Manufacturing

Every unit made to your exact measurements with tight tolerances. No guesswork, no on-site trimming, no return visits. Accurate glass means efficient installations and satisfied customers.

Rapid Turnaround

Standard units dispatch same-week. Bespoke sizes within 5-7 working days. We know that a window waiting for glass is a customer waiting for a solution — we don't keep people waiting.

Full Specification Range

Clear, Low-E, tinted, obscure, acoustic, safety, decorative — whatever the window needs, we make it. Upgrade an old unit or match an existing one; we cover the full spectrum of residential and commercial glazing.

BS EN 1279 Certified

Every sealed unit is manufactured to the British Standard for insulating glass. Full traceability, quality testing, and certification documentation available with all orders.

Competitive Trade Pricing

Direct-from-manufacturer pricing with no middleman markup. Volume discounts for regular orders. Trade accounts with 30-day terms for established professionals.

Help your customers understand when a window needs attention — and why professional repair is the smart choice over full frame replacement.

Signs Your Double Glazing Needs Attention

Catching problems early saves money and prevents bigger issues. Here are the telltale signs your windows need professional attention.

⚠️ Noticed any of these issues? Do not wait - small problems become expensive repairs. Get a free assessment today.

Expert Knowledge

Window Repairs: Getting the Glass Right

The Economics of Window Repair

Window repair — specifically sealed unit replacement — is one of the most efficient and profitable services in the glazing trade. The frame stays in place, the work is non-structural, and a skilled installer can complete a standard window in 20-40 minutes. Customer satisfaction is high because the result is immediate: clear glass where there was fog.

For trade professionals, the key to profitable window repair work is a reliable glass supplier. Wrong sizes, late deliveries, and quality issues eat into margins and damage your reputation. That's why precision manufacturing and consistent turnaround matter more than marginal price differences.

Measuring for Replacement Units

Accurate measurement is the foundation of a clean installation. For standard rectangular units, measure width and height to the nearest millimetre at the glass line (not the frame opening). Deduct 2-3mm from each dimension for thermal expansion clearance — our technical team can advise on the correct tolerance for specific glass types and frame materials.

For the thickness, measure the overall unit depth. Common residential configurations are 20mm (4-12-4), 24mm (4-16-4), and 28mm (4-20-4). If you can't measure the existing unit (it's still in the frame), measure the bead depth and frame rebate to calculate the maximum unit thickness that will fit.

Specification Choices

Every repair is an opportunity to upgrade the specification. Most failed sealed units were manufactured 15-20 years ago with basic float glass and air fill. Today's replacement units with Low-E coatings and argon gas fill deliver significantly better thermal performance — U-values of 1.1 W/m²K compared to 2.8 W/m²K for the original.

This upgrade costs relatively little extra but delivers measurable value: lower energy bills, improved comfort, and reduced condensation risk on the room side of the glass. It's an easy upsell that genuinely benefits your customer.

Frame-Specific Considerations

uPVC frames: Bead removal with a flat chisel, clean the rebate, fit new unit with fresh packers, re-clip beads. Straightforward on most systems. Check gasket condition — a new unit in worn gaskets won't perform.

Aluminium frames: Older systems may have screw-fixed beads or pressure-plate systems. Measure carefully as aluminium frame profiles vary widely between manufacturers. We can advise on unit thickness constraints.

Timber frames: Inspect for rot while the glass is out — especially at the bottom rail and cill junction. Putty-glazed frames require new putty and pins; bead-glazed frames are quicker to re-glaze. For listed buildings, check conservation requirements before specifying glass type.

Housing associations and property management companies often have multiple failed units across a portfolio. Offering a batch repair service — survey, quote, and replace all failed units in one mobilisation — is more efficient for you and more cost-effective for the client. We offer volume pricing specifically for batch orders of 10+ units.

Whether it's a single domestic repair or a multi-unit commercial contract, the ordering process is the same — simple and fast.

How Our Service Works

From first contact to finished job, we make the whole process straightforward and stress-free.

Measure the Window

Measure width, height, and overall unit thickness at the glass line. Note glass type, any special features (Georgian bars, obscure glass, toughened), and the frame material.

Place Your Order

Submit dimensions via our trade portal, email, or phone. We confirm specification and pricing — usually within the hour for standard sizes.

We Build It

Every unit is manufactured to your exact dimensions. Standard sizes dispatch same-week; bespoke specifications within 5-7 working days. Rush orders available on request.

Collect or Deliver

Tracked delivery to your workshop or direct to site. Alternatively, collect from our facility. All units are edge-protected and securely packaged.
From standard casements to heritage sashes, we manufacture replacement sealed units for every window style and frame material.

What We Can Help With

From quick repairs to complete replacements, we handle all residential and commercial glazing needs.

Casement Window Units

The most common replacement job. Standard and bespoke sizes for top-hung, side-hung, and fixed casement windows in uPVC, aluminium, and timber frames.

Sash Window Units

Slim-profile sealed units specifically designed for traditional sash windows. Maintain the original proportions while dramatically improving thermal and acoustic performance.

Energy Efficient Upgrades

Replace old float glass with A-rated energy efficient units. Low-E coating plus argon fill delivers U-values from 1.1 W/m²K — a genuine upgrade your customers will appreciate.

Acoustic Sealed Units

Asymmetric pane configurations and laminated glass for noise-sensitive locations. Reduce external noise by up to 45dB — essential for properties near roads, railways, or flight paths.

Obscure & Privacy Glass

Full range of obscure patterns, sandblasted finishes, and one-way privacy options. Bathroom windows, front door panels, and ground-floor side windows are the most common applications.

Heritage & Decorative

Georgian bar units, leaded effect, stained glass effect, and conservation-spec slim units for period properties. We work with conservation officers' requirements on listed buildings.

Not sure what you need? No problem - we will assess and advise. No obligation, no pressure.

Trusted by Tradespeople & Homeowners

What Our Customers Say

4.3 ★ from 27 Google reviews

  • 15+

    Years in Business

  • 10,000+

    Sealed Units Supplied

  • 27+

    Google reviews

  • ★★★★★
    Huge shout-out to Ollie and the team! ⭐⭐⭐⭐⭐ ​Our patio door went from being completely stuck and impossible to lock to sliding like a dream. Ollie diagnosed the issue (collapsed wheels) and his team squeezed us in despite a packed schedule. ​The difference is night and day—it literally feels like it’s sliding on air now. If you’re looking for reliable, expert servi...

    Susan Passmore

  • ★★★★★
    We had glass panes and hinges replaced throughout the house and a new set of french doors. Ollie and everyone that came to fit were friendly, professional, tidy and considerate. The work has been carried out to excellent quality - especially the french doors which look fantastic.

    Lucy Bennett

  • ★★★★
    Complex issue with a broken non-standard hinge on 1st floor window. Ollie was the only one of over 10 other firms I contacted who said they could do the job. It took a while, but Ollie managed to source a replacement part and completed the job to a high standard. Very happy with the work done and have asked him to do another job following the good experience.

    Dave Edwards

Answers to common trade questions about ordering replacement window glass. Our technical team is always available for specification advice.

Frequently Asked Questions

Everything you need to know about our double glazing repair and replacement services across the South West.

  • We manufacture sealed units in any size to your exact measurements. Standard thickness options range from 14mm to 44mm. Minimum glass dimension is 150mm; maximum is 3200mm × 2500mm for standard units. Larger bespoke sizes are available on request.

  • Measure width and height at the glass line (not the frame opening) to the nearest millimetre. Measure overall thickness from face to face. Deduct 2-3mm from width and height for thermal expansion tolerance. If the unit is still in the frame, measure bead depth and rebate to calculate maximum unit thickness.

  • Yes — no minimum order. A single unit for a one-off repair gets the same quality, turnaround, and trade pricing as a bulk order. We know that's how repair work operates.

  • Clear, Low-E, solar control, tinted (grey, bronze, blue, green), obscure (multiple patterns), laminated, toughened, acoustic, self-cleaning, and decorative. We can combine multiple features in a single unit — for example, toughened Low-E with argon fill and internal Georgian bars.

  • Yes. We manufacture slim-profile sealed units suitable for heritage applications, including units thin enough to fit traditional timber sash profiles. We can work within conservation officer specifications and provide documentation of glass type and performance.

  • The warranty covers seal integrity and gas retention. If a unit develops internal misting (condensation between panes) within 10 years of manufacture, we replace it free of charge. The warranty transfers with the property if the homeowner moves.

  • We stock all standard obscure patterns (Stippolyte, Cotswold, Arctic, Flemish, Autumn, Digital, etc.) and can source specialist patterns on request. If you can identify the existing pattern or send a photo, we'll match it.

  • Every unit is edge-protected with foam strips and packed in purpose-built glass stillages for delivery. For small orders (1-4 units), we use reinforced cardboard packaging with corner protectors. All packaging is designed to survive standard courier handling without damage.

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Related Services

We offer a complete range of glazing services across Bristol. See how else we can help.

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Full range of double glazed sealed units — all sizes and specifications.
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Triple Glazing Units

Premium triple glazed sealed units for superior thermal and acoustic performance.
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Double Glazing Repairs

Specialist replacement units for double glazing repair jobs.
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Conservatory Reglazing

Conservatory sealed units including bespoke roof panels and side panel replacements.
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Need Replacement Window Glass?

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