Double glazing installers in London – Page 7

Hampstead Window Cleaning are a small but established Window Cleaning Company who have been operating in Hampstead, NW3 and the surrounding areas for over 10 years.

Window Cleaning Windows & Doors

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David Penton and Son

◆ London · W1U 2PE

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

Hardware & Plastics

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Glass Design and Build London Ltd

◆ London · E14 9XL

Here at Glass Design & Build London, our aim is to provide inspirational contemporary structures and glass extensions in London.

Glass & Mirror Renovation & Refurb

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Thermal Glazing Limited

◆ London · NW10 7FQ

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

Glass & Mirror Windows & Doors

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Artisan Stories -Interiors and Home Accessories Store

◆ London · SW9 8PR

We created Artisan Stories to champion true traditional artisan talent. With connections all over the world we want to bring unique and beautiful items to those who appreciate the skill in their making. Our launching collections are from villages around Marrakech and include hand painted ceramics & recycled glassware.

Glass & Mirror Hardware & Plastics Renovation & Refurb

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A.D Glassworks Ltd

◆ London · SE28 0AU

We are specialists in all areas of glass production. Ranging from colour painted glass splashbacks, to swimming pool barriers, our team hand-make all products.

Glass & Mirror

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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.