How long is the payback period for double glazing?

A typical double glazing system pays back in approximately 8 years based on estimated average savings of £180 per year. Actual savings depend on your property and energy usage.

Double Glazing

Double Glazing — UK Costs, Grants & Installers (2026)

Q: How much do double glazing cost in the UK?

Double Glazing typically cost between £400 and £800 installed in the UK in 2026 (estimated). The average homeowner pays around £600. Actual costs vary depending on property and installer.

Q: Is there a grant for double glazing?

Eligibility for government grants varies by product type. Check the latest requirements before applying.

By Natasha Ellis, Contributor · Updated April 2026

Quick answer: Double Glazing cost between £400 and £800 installed in the UK (2026). Estimated annual saving: £180. Estimated payback period: 8 years. There is currently no government grant available for this product.

£600

Est. installed cost

£180/yr

Est. annual saving

~8 yrs

Est. payback

0.4 t

Est. CO₂ saved/yr

Double Glazing Costs by UK Location (2026)

Prices vary slightly by region. Select your location below for local installer quotes, grant details and a full cost breakdown.

Double Glazing Costs in the UK (2026)

Price range	Typical cost	Est. annual saving	Est. payback
Low	£400	£180/yr	8 yrs
Typical	£600
High	£800

Source: Green Reach Energy research, March 2026. Prices are estimates and include installation and VAT. Actual costs may vary.

Frequently Asked Questions

How much do double glazing cost in the UK?

Double Glazing in the UK cost between £400 and £800 installed. A typical mid-range system costs around £600 including installation and VAT (estimated, based on our research).

Is there a grant for double glazing in the UK?

There may be government grants or schemes available depending on your property and circumstances. Eligibility criteria may change — always check the latest requirements before proceeding.

How long is the payback period in the UK?

The estimated payback period for double glazing in the UK is around 8 years, based on estimated annual savings of around £180. Actual payback depends on your number of windows, property size and current glazing type.

Do I need planning permission for double glazing?

Most double glazing installations fall under permitted development rights and do not require planning permission. However, listed buildings, conservation areas and flats may need approval from your local council. Always check with your local planning authority before installation.

How do I find a good installer in the UK?

We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.

Double Glazing Costs by UK Location (2026)

Double Glazing Costs in the UK (2026)

Available Grants for Double Glazing (2026)

Frequently Asked Questions