Double glazing installers in London – Page 40

Striking, Handcrafted and Bespoke Front Doors & Windows all made in-house by our team at Beechhall Joinery in London. We're passionate and proud of all our work.

Timber & Joinery

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Plantation Shutters Ltd

◆ London · SW11 3SX

Buy window shutters from London’s most experienced shutter company. We offer full measure and installation service, and also DIY shutters. Book a survey today!

Blinds & Shutters

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Hampstead Glass & Mirrors Shop

◆ London · NW3 1HE

A&E Glazing offers a wide range of glass related products delivering to Bexleyheath | Glass cut to size | Sealed units | Online Glass shop.

Glass & Mirror

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Vitrocsa by BRAVA Vitrocsa Technical Advice

◆ London · SW18 4UQ

We stock Vitrocsa in our factory for best UK lead times call us to discuss _x000D_ your UK project, our team is available to answer any questions about the _x000D_ Vitrocsa systems, review your project and give technical advice.

Glass & Mirror

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Repair A Sash Ltd

◆ London · NW10 5EN

Sash Windows London specializes for sash window repair, timber windows, casement windows & doors. All of our sash windows are high quality and fit with British Building Standards regulations of period properties and listed buildings.

Repair & Maintenance Timber & Joinery Windows & Doors

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Lordship Windows

◆ London · N18 1ND

Discover the perfect double glazing windows and doors for your home or business. Our comprehensive directory showcases a wide range of products and…

Windows & Doors

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Double glazing in London: what to know

Replacement windows and doors in England must meet the Building Regulations — a U-value of 1.4 W/m²K or a Window Energy Rating of band B, and no worse than the units they replace. A FENSA- or CERTASS-registered installer can self-certify that compliance and register the work, so you get a certificate without arranging building control separately.

When comparing firms in London, check the accreditations each one holds, make sure quotes are like-for-like on frame material and glass specification, and get at least three before you decide. Every listing here is an independent local business, so your enquiry goes straight to the firm.

Double glazing in London — common questions

How much does double glazing cost in London?

As a rough guide, a replacement uPVC casement window is typically around £400–£650 fitted, and a full-house replacement often falls between £4,000 and £8,000 depending on the number of windows, the glass specification and the frame style. Prices vary between firms, so it is worth comparing at least three quotes from installers in London.

Are double glazing installers in London FENSA registered?

Many are. Replacement windows and doors must meet Building Regulations, and a FENSA- or CERTASS-registered installer can self-certify the work and register it for you — so you receive a compliance certificate without arranging building control separately. Each listing shows the accreditations that firm holds.

Do I need building regulations approval for new windows in London?

Replacement windows must meet the Building Regulations, but you usually do not need a separate building control application — a FENSA- or CERTASS-registered installer self-certifies the work. In England the windows must not exceed a U-value of 1.4 W/m²K (or achieve at least a WER band B) and must be no worse than the ones they replace.

How many double glazing installers are listed in London?

We currently list 913 in London. You can compare them above by the services they offer and the accreditations they hold.

How do I get quotes from installers in London?

Use the quote form on this page — enter your postcode and what you need, and we will pass it to matched local installers. It is free and there is no obligation to proceed.