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Windows & Doors — specialists near you

10,469 Windows & Doors specialists are listed across the UK — firms that handle everything from a single window to a full-house window and door replacement, including firms in Kidderminster, Failsworth, Manchester, Keith, Shrewsbury and Gloucester. Compare them by location and accreditation, and request free, no-obligation quotes from the ones that fit your project.

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CDW Systems

◆ Gloucester · GL4 3DB

CDW Systems Limited is a high-quality manufacturer and supplier of aluminium windows, doors and associated products. We have been supplying our products to commercial, retail and trade projects since 1992.

Windows & Doors
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Windows & Doors: what to know

Replacement windows and doors in England have to meet the Building Regulations (Approved Document L) — a limiting U-value of 1.4 W/m²K, or a Window Energy Rating of at least band B — and they must be no worse than the units they replace. A FENSA- or CERTASS-registered installer can self-certify that compliance and register the work with your local authority, so you get a certificate without arranging building control separately.

Windows & Doors — common questions

What do Windows & Doors specialists do?
Windows & Doors specialists supply and fit windows & doors for homes and businesses. The firms listed here range from local installers to manufacturers — each listing shows their services, the areas they cover and their accreditations.
How do I choose a good Windows & Doors firm?
Check that the firm holds relevant accreditations (such as FENSA, CERTASS or TrustMark), look at the range of services they offer, and compare at least three quotes before you decide. Every listing here shows accreditations and services so you can shortlist quickly.
How many Windows & Doors specialists are listed?
We currently list 10,469 Windows & Doors specialists across the UK. Filter to your area using the location pages, then request free quotes from the firms that fit.
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