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The Future of Comfort, Today
Why Choose 
Double the Comfort
Quieter Homes
Enhanced Security
Innovative Designs
Sustainability
Future Proof
Slash Your Energy Bills
Twice As Thermally Efficient
Whisper Quiet Living
Half The External Noise
Gold Standard Security
50% More Secure
How ecosilence compares against and outperforms other window systems
| uPVC Windows | Aluminium Windows | |
|---|---|---|---|
 Twice as Thermally Efficient | ecosilence can achieve a U-Value as low as 0.66 W/m²K | uPVC WindowsMost uPVC window systems achieve U-values of around 1.4 W/m²K | Aluminium WindowsMost aluminium window systems achieve U-values of around 1.5 W/m²K |
Half the External Noise | ecosilence can reduce noise levels by up to 42 decibels, around twice that of other uPVC window systems | uPVC WindowsuPVC window systems typically only reduce around 35db of noise, which is only 50% as effective as ecosilence | Aluminium WindowsMost aluminium window systems typically only reduce around 35db of noise, which is only 50% as effective as ecosilence |
50% More Secure | ecosilence is fully tested and compatible with British Standard PAS24 and Secured By Design, meeting Part Q building regulations | uPVC WindowsMany uPVC window systems are not compatible with Secured By Design or PAS24 | Aluminium WindowsMany aluminium window systems are not compatible with Secured By Design or PAS24 |
Calculate Your Energy Savings with
Twice as Thermally Efficient
Half the External Noise
50% More SecureThe Future Of Comfort, Today
Frequently Asked Questions
What Makes ecosilence Windows Different From Regular Double-Glazed Windows?
ecosilence uses advanced 90mm frames and triple glazing to deliver ultra-low U-values of just 0.66 — that’s more than twice as efficient as a standard double-glazed window (typically around 1.4).
With estimated energy savings of up to £15,000 over 35 years, these windows are not only good for your wallet, but great for the planet too.
U-values are a standard building regulation measurement showing how well a material keeps heat in. The lower the U-value, the better the insulation.
Can ecosilence Windows Help Reduce My Energy Bills?
Absolutely. ecosilence is designed to lock in heat during winter and keep you cool in summer. Its ultra-low U-value (just 0.66) helps cut energy use dramatically — meaning lower heating bills and a more consistent, comfortable temperature year-round.
Will ecosilence Make My Home Quieter?
Yes. ecosilence reduces outside noise by up to 42 decibels — that’s around 50% quieter than standard double-glazed windows, which usually block just 32 decibels.
Whether you live near a road, railway, or school, you’ll enjoy whisper quiet living.
The decibel scale is logarithmic — meaning a 10dB drop is perceived as half as loud.
Are ecosilence Windows More Secure Than Regular Windows?
ecosilence offers up to 50% more resistance to forced entry through the glazing compared to standard double glazing.
That means more peace of mind for you and your family.
All ecosilence windows meet the latest Part Q building regulations and PAS24 enhanced security standards — the gold standard in window safety.
Can ecosilence Be Fitted In Existing Homes?
Yes! ecosilence is available in both new build and retrofit options. The ecosilence R (for retrofit) version is designed to fit into existing 70mm openings with minimal disruption to your interior décor or plasterwork.
What Finishes Or Colours Are Available?
ecosilence windows and doors come in a range of contemporary foil colours and finishes to match your home’s style. From classic whites to modern greys and woodgrain options, you can choose a look that’s truly yours.
Is ecosilence Environmentally Friendly?
Yes. ecosilence products are made in the UK using recycled uPVC and are fully recyclable at the end of their life.
By choosing ecosilence, you’re making a choice that helps reduce waste and carbon emissions.
Customer Testimonials
Great job of our new front door. They couldn’t have been more helpful and even fitted earlier than originally planned. Also gave great aftercare advice and at a very reasonable price! Would 100% recommend.
Meg Welch
Cannot recommend Britannia Windows enough! Joe & Keith, the installers were great – explained what was to be done, showed me everything I needed to know upon completion, very considerate & tidied up really nicely. Very friendly guys who are an asset to the team!!
I LOVE my new windows & door. Such an improvement.
Annette Clemons
Customer Testimonials
Wow a fantastic job by both sales team and fitting team.
Sam provided excellent service and answered any questions that we had. Luke, Dave, Keith and Joe did a fab job at fitting the windows and doors. Never having had anything like this done before I was a little nervous but the guys were clean and tidy and the outcome is amazing.
Would highly recommend.
Jerry G
Fantastic job from initial phone call through to final tidy-up.
Britannia provided great advice before purchasing my new windows and fitted them to a high standard being punctual and polite throughout.
No request was a problem and I will definitely be using them again and would recommend to friends and family.