Britelite double glazing windows review

Britelite is a double glazing company with a range of windows all homes, from modern to traditional. You can select from aluminium or uPVC window frames that come in 4 different styles: casement, sliding sash, traditional Residence 9 and secondary, all of which can be finished with decorative or frosted glass.

Britelite holds the BSI Kitemark for installation and offers excellent after-sales care: for example, a senior fitter will visit your home after installation to ensure everything has gone to plan. The company will also provide tips to help you maintain your windows in the years to come, and your Britelite windows will be covered by a transferable warranty that is valid for 10 years.

The company says it offers the best price the first time around, so there’s no need to haggle. The company appears to prioritise price transparency, clearly stating what is and isn’t included in your installation. You can purchase your windows on finance with a representative APR of 8.9 per cent.

Key features

• Highlights: Transparent pricing and excellent after-sales service and security features.
• Key benefit: Britelite offers affordable, high-quality double and triple-glazed windows and installation.
• Memberships and certifications: Which? Trusted Trader, TrustMark, FENSA, GGF, Chartered Trading Standards Institute, Conservatory Association, BFRC, Triple-A, TGAS, TPS and MPS.
• Styles: Britelite’s uPVC windows come in 3 styles: casement, traditional Residence 9 and sliding sash. Aluminium windows come in 2 styles: casement and secondary.

Britelite sells aluminium and uPVC windows with either double or triple-glazed glass. The company’s windows come with the BSI Kitemark, which ensures they are manufactured and fitted to the highest standards. On top of that, Britelite installations come with a transferable 10-year guarantee.

The company’s 5-chambered windows feature soft-coated, low-E glass to maximise heat retention and reduce noise levels inside your home.

Britelite sells and installs SBD-accredited windows by U70, doors and windows by the UK Window Group and Unique Windows Systems, and sliding sash windows by Quickslide.

• Guarantee options: 10-year transferable guarantee
• Price range: From £570 per window
• Energy efficiency rating: A++ on standard triple-glazed windows, A+ on all uPVC double glazing
• Secured by Design (SBD) rating: Some Britelite windows are SBD accredited

As the cost of windows is significant, make sure you consider the pros and cons of any window provider before you make a large investment.

Here are some of the advantages of purchasing your new windows from Britelite:

• Triple glazing for even greater efficiency: Britelite’s A-rated triple-glazed windows are highly efficient. They are made from three glass panels with double argon gas-filled cavities to improve insulation.
• Reduced condensation: Britelite’s uPVC triple-glazed windows are warmer than windows with metal spacer bars, which can reduce condensation (and thereby bacteria and mould) by 80 per cent.
• Security: Britelite windows feature a 10-point locking system to keep your home secure.
• Expert fitters and aftercare: All Britelite fitters are fully trained and carry the BSI Kitemark for installation. A senior fitter will visit your house after installation to review the work and provide maintenance advice.
• Price transparency: Britelite is known for price transparency, stating VAT and fitting costs upfront during the quotation phase.
• Reputation: Britelite passed the Which? Trusted Trader assessment, which involves reference checks and customer consultations.

However, choosing Britelite does have some disadvantages, including:

• Limited choice: Unlike some of its competitors, Britelite only offers aluminium and uPVC window frames. What’s more, there are only 4 different styles to choose from.
• Limited payment options: Britelite doesn’t offer as many finance options as its competitors.
• Warranty: Britelite only offers a 10-year warranty, while many other window brands offer 20-year or even lifetime guarantees. 
• Regional limitations: Britelite only operates in Kent, Sussex, Essex, Surrey and London.

How do Britelite windows work?

Britelite’s double and triple-glazed windows feature an SAC multi-shoot bolt locking system and internal beading to help improve your home’s security and insulation. The windows are made up of 2 or 3 glass panels filled with gas to throw radiated heat back into the home and improve energy efficiency. All Britelite windows carry a BFRC “rainbow” label to reflect their energy-saving properties.

The final cost of Britelite windows will depend on the material, window size, accessories and glazing (double or triple); however, after speaking to the company, our researchers were given the following prices for a standard-size casement window:

Britelite uPVC windows are low maintenance. You’ll just need to wipe down the frames twice a year to keep them in good condition. Use soapy water and a soft cloth to wipe and dry your frames, taking care not to get them too wet. Avoid using abrasive paste or cream-based cleaners. Ordinary dish-washing liquid is usually the safest option. Never paint your uPVC frames as this may damage them.

Aluminium frames don’t require much maintenance either. Abrasive cloths, bleach and other strong chemicals should be avoided as they can damage aluminium frames. Instead, wipe the frames with a soft cloth and mild household detergent or non-abrasive cream cleanser. An ink rubber can be used to remove stubborn stains. Always dry your frames with a cloth or towel after cleaning, and try not to damage the powder coating.

Clean your Britelite window panes with a standard commercial liquid spray cleaner. You can ask your installer for recommendations.

How does Britelite compare to other window companies?

“Britelite [were] as professional and friendly as always. Thank you.”

• Hazel Howarth, January 2026, via Trustpilot

“Great communication. Always phoned me back with updates. The fitters were excellent – absolute stars.”

• Lorraine, January 2026, via Trustpilot

Our recommendation

Britelite is a high-quality, affordable window company, making it a great choice for homeowners in the South East of England. You won’t have a large variety of styles and materials to choose from, and Britelite’s warranties are standard, but many customers have had positive experiences with the company. It has a simple and honest approach to quoting and installation which may appeal to you.

Britelite windows are ideal for homeowners who want a straightforward double or triple glazing solution with expert installation at a low cost. The company places a good deal of emphasis on security, with cutting-edge locking systems and innovative design solutions. Many of its products are SBD-accredited.

Methodology

Our team has read hundreds of customer reviews, professional opinion pieces, consulted forums and technical documentation to compile this Britelite windows review.

We assessed Britelite and other window companies against the features and characteristics homeowners care about most when buying new windows, including:

• The type of double glazing material (uPVC, wooden, aluminium);
• The number of styles on offer;
• The energy efficiency rating held by the company;
• The level of security offered;
• The warranty period;
• The company’s years of experience;
• The number of payment options;
• The total rating score of the company held on Trustpilot; and
• Additional benefits (including FENSA certification, design options, customer support and the inclusion of trickle vents).

Read more about how we review windows.