Double Glazing Installation in London (37)

Looking to improve your home’s energy efficiency, reduce outside noise or replace ageing windows? Finding the right double glazing installer in London can make all the difference. Checkatrade helps you connect with local, trusted tradespeople in London who are committed to quality.

Double glazing is one of the most effective upgrades you can make to your home. Modern double glazing focuses on comfort, lower energy bills and improved security. What's more, through Checkatrade, you can contact local tradespeople who can offer guidance on the right solution for your property and budget.

Local Double glazing installation services in London

From full window replacements to repairs and upgrades, our members cover a wide range of double glazing services in London. All tradespeople on Checkatrade are checked, reviewed by real customers and committed to high standards of workmanship, helping you find rated double glazing installers in London with confidence.

What to expect from hiring a double glazing installer in London

Common jobs requested

• Installing new double glazed windows and doors
• Replacing old or misted units
• Upgrading single glazing to double glazing
• Repairs to seals, hinges and frames

Average costs for double glazing installation in London

Expect to pay £4693 on average, with prices typically starting at £3167 up to £6935.

What’s included in a typical quote

• Supply and installation of windows or doors
• Removal and disposal of old units
• Labour and fittings
• Basic finishing and clean-up

Qualifications and checks

• Look for installers registered with FENSA or CERTASS
• Public liability insurance
• Clear written quotes and warranties

Additional costs to consider:

• Bespoke or heritage-style windows
• Trickle vents or upgraded glazing
• Scaffolding for upper floors

How long it usually takes

1 - 2 hours per window on average Most full installations are completed within 1 - 2 days

Double glazing installers in London: Homeowners vs renters

For homeowners

If you own your home, you’re responsible for arranging and paying for double glazing work. Most replacements fall under permitted development, but if your property is listed or in a conservation area, you may need planning approval. Installers should provide compliance certificates (such as FENSA) once the work is complete.

For renters

Tenants are not usually responsible for replacing windows. If you’re experiencing draughts, condensation or damaged glazing, report the issue to your landlord or letting agent. They are legally responsible for ensuring windows are safe, secure and energy efficient.

Emergency double glazing installer in London

Urgent double glazing problems can pose security and safety risks. Common emergencies include:

• Broken or shattered windows
• Failed seals causing severe draughts
• Windows that won’t close or lock

If you need urgent help, find a trusted emergency double glazing installer in London who can make your property safe quickly and arrange a permanent repair.

Find a double glazing installer for the job you need in London

Double glazing companies can also help with:

• uPVC, aluminium and timber window installation
• Double glazed doors and patio doors
• Window repairs and replacements
• Energy-efficient glazing upgrades
• Misted or blown window unit replacement