Window Glass Replacement

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Availability In Stock

Glass Types Clear Tempered Glass, Frosted Glass, Tinted Glass
Thicknesses 4mm, 6mm, 8mm, 10mm, 12mm
Shapes Rectangle, Square, Round, Oval, Random
✅ Note: All of our glass are Flat Polished by default.
🏅 Quality
✅ ISO 9001
🛡️ BS EN 12150*

* Applies where a safety/tempered option is selected.
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Description



Replacement & Repair

Custom Window Glass Replacement

Premium custom-cut window replacement glass, including single panes, double glazed units (DGUs), and energy-efficient Low-E glass. Suitable for timber, UPVC, and aluminium frames.

Window Glass Replacement UK

Replacement Glass Specifications

Thickness
4mm, 6mm (Single), 14mm to 28mm (DGU)
Glass Types
Single Glazed, Double Glazed Units, Low-E, Acoustic, Toughened
Edge Finishes
Clean Cut, Flat Polish
Safety Standard
BS EN 12150-1 (Toughened), BS EN 1279 (DGU)
Tolerance
+/- 1mm to 2mm
Sizes
Custom sizes up to 3000mm

Available Glass Finishes

All our glass is heat-treated (toughened) to increase its strength by up to 500% compared to standard float glass. Select your aesthetic finish below.

Thickness Guide

Choosing the correct gauge or overall DGU thickness ensures your replacement glass fits your window frame perfectly.

4mm

Standard for single-pane traditional wooden windows, greenhouses, and shed windows.

6mm

Suitable for larger single panes or commercial shopfront windows requiring extra structural integrity.

14-28mm

Overall thicknesses for Double Glazed Units (DGUs) used in modern UPVC, timber, and aluminium frames.

Window Glass Thickness Options

Edge Profiling

Window glass usually sits entirely inside a frame, so standard Clean Cut edges are recommended.

Clean Cut Edge Window Glass

Clean Cut (Standard)

The glass is scored and snapped cleanly. Edges are left raw as they will be fully concealed, sealed, and protected within the window frame.

Polished Edge Window Glass

Flat Polished Edge

Edges are machined smooth with safety chamfers. Used only in specific situations where the edge of the glass pane will remain exposed.

Precision CNC Fabrication

If you are ordering toughened glass, it cannot be cut or drilled after the heating process. All shapes and ventilator holes must be specified beforehand.

✓

Ventilator Holes

Precision CNC cuts to accommodate window vents, extraction fans, or cat flaps.

✓

Custom Window Shapes

Arched tops, raked angles, circles, and irregular polygons for architectural window frames.

✓

Cutouts & Notches

Edge notching to fit your glass flawlessly around specific hardware or complex frame joints.

CNC Window Glass Fabrication

Measurement Protocol

Perfectly fitting glazing ensures your home stays insulated and secure. Measure your window frames carefully before placing a custom order.

How to Measure Replacement Window Glass
1
Measure the Tight Opening

Use a rigid metal tape measure. Measure the inside of the frame rebate (the groove where the glass sits) from side to side and top to bottom.

2
Factor in Clearance (Tolerance)

Deduct roughly 3mm to 4mm from both the width and the height measurements to allow space for fitting, expansion, and putty/sealants.

3
Measure DGU Thickness

If replacing a double glazed unit, measure the overall thickness of the old unit accurately to ensure the new one fits securely under the window beads.

4
Submit in Millimeters (mm)

All custom glass orders are processed and manufactured strictly in millimeters.

Engineered for Performance

Precision Cut

Precision Fit

Tailored glass to exact millimetre size for a seamless frame installation.

Thermal Efficiency

Energy Efficient

Upgrade to Low-E and double glazing to lower your heating bills.

Fast Delivery

Rapid Delivery

Fast UK delivery to restore your home’s security quickly and safely.

Frequently Asked Questions

What types of replacement window glass do you offer in the UK?

We offer a wide range including standard single panes (float or toughened), custom made-to-measure double glazed units (DGUs), and energy-efficient Low-E (low emissivity) glass.

Can you supply replacement double glazed units (DGUs)?

Yes, we manufacture custom double glazed units to replace blown, misted, or broken windows in UPVC, timber, or aluminium frames. We can also include argon gas filling for better insulation.

What thicknesses are available for window replacement glass?

Single glazed panes are typically available in 4mm or 6mm. For double glazed units, we offer standard overall thicknesses including 14mm, 20mm, 24mm, and 28mm.

Do I need toughened safety glass for my replacement windows?

By UK law, toughened or laminated safety glass is required for any window completely or partially within 800mm of floor level, or in doors and side panels within 300mm of a door.

What sizes can I order for replacement window panes?

We cut to exact custom sizes ranging from 150mm up to 3000mm to ensure a perfect fit for your existing window frames.

Can you supply energy-efficient or Low-E window glass?

Yes, we provide Low-E (energy saving) glass options which reflect heat back into the room, helping you meet building regulations and reduce heating bills.

Are the edges polished on replacement window glass?

Replacement window panes and double glazed units are supplied with Clean Cut edges by default, as the edges will be hidden inside the window frame. Flat Polish is available if requested.

How do you pack and ship replacement window glass?

Small single panes are securely boxed and packed. Larger panes and double glazed units are shipped unpacked on specialized A-frames for inspection upon delivery.

What is the usual delivery time for window replacement glass?

Single panes typically take 7-10 working days, while custom double glazed units may take 10-14 working days for delivery across the UK.

Which UK areas do you deliver replacement glass to?

We offer flat rate delivery across England, with additional delivery charges possible for addresses in Wales and Scotland.

Customer Reviews

“Ordered a replacement double glazed unit for a blown UPVC window. Fit perfectly and saved me hundreds of pounds!”

★★★★★

“Excellent quality Low-E glass. My living room feels noticeably warmer since replacing the old single panes.”

★★★★★

“Fast delivery on a custom toughened window pane for our back door. Measurements were spot on.”

★★★★★

Professional Window Glass Replacement Solutions

Don’t let a cracked, foggy, or drafty window ruin the comfort, security, and curb appeal of your property. Whether you are dealing with a shattered pane from severe weather or a failed seal causing unsightly condensation, a timely window glass replacement is essential to restoring your home’s insulation and visual clarity. We specialize in high-quality glass and window replacement solutions, providing custom-cut glazing that fits perfectly into your existing frames.

The Smart, Cost-Effective Upgrade

Instead of tearing out the entire window structure and dealing with expensive renovations, a targeted window pane replacement is often the most efficient and budget-friendly solution. By swapping out just the damaged or inefficient glazing, you can save significant time and money while preserving the architectural integrity of your home. Our premium glass window replacement options include single-pane, double-glazed, and energy-efficient Low-E glass, giving you the flexibility to upgrade your property’s thermal performance without a full frame overhaul.

Restore Clarity, Comfort, and Security

Broken or compromised windows are more than just an eyesore; they allow your costly heating and cooling to escape while leaving your property vulnerable to intruders. Upgrading your broken glass instantly revitalizes your living space, blocks out street noise, and secures your perimeter against the elements.

Why Choose Our Replacement Glazing?

  • Custom Precision Fit: Our glass is expertly measured and precision-cut to seamlessly slot into your current wooden, vinyl, or aluminum window frames.
  • Maximum Energy Efficiency: Eliminate drafts and lower your monthly utility bills by upgrading to our modern, thermally insulated glass units.
  • Enhanced Home Security: Restore the structural integrity of your windows with durable, high-strength panes that keep your family and valuables safe.

Ready to fix that broken view? Browse our comprehensive selection of custom-cut glass to find the exact dimensions and specifications for your next window glass replacement project, and bring the light back into your home today.

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