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🔥 AUGUST SALE – 10% OFF ALL WINDOWS, DOORS & GLAZING!
📍 Fast installation, free delivery & expert fitting – Book your free quote now!
🪟 Looking for affordable, made-to-measure UPVC windows and doors in Hackney, Islington, or across North London?
💷 From just £65 + VAT, our energy-efficient solutions are BFRC rated and fully compliant.
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For Windows, Doors & Glazing in London
Fast & professional installation across London. All products made in our own workshop – no middlemen!
ENERGY EFFICIENCY & U-VALUE PERFORMANCE
At Best Deal Windows, we proudly supply and install window and door systems manufactured with the highest industry standards. Partnering with Selecta Systems, we offer Eurolook70 profiles combined with Thermaglas sealed units to deliver exceptional thermal efficiency and compliance with current UK Building Regulations.
Our multi-chambered window and door profiles, in combination with 40mm triple glazing (TGU) or 28mm double glazing (DGU), can achieve U-values as low as 0.8 W/(m²K). These performance levels help homeowners reduce energy bills, improve comfort, and meet sustainability targets.
DOCUMENT L — Future Homes Standard Compliance
Our products fully comply with Document L, ensuring energy efficiency standards are met for both new and existing homes.
New homes now require:
✓ Windows: U-value ≤ 1.2 W/(m²K)
✓ Doors: U-value ≤ 1.2 W/(m²K)
For existing homes:
✓ Replacement windows must meet at least 1.4 W/(m²K)
✓ Replacement doors (with >60% glass) must also meet at least 1.4 W/(m²K)
DOCUMENT F — Ventilation Requirements
As of June 2022, homes must have background ventilators with trickle vents unless other adequate systems exist.
✓ Kitchens/Living Rooms: 8000mm² (2 EA)
✓ Bathrooms/Toilets: 4000mm² (1 EA)
Stricter requirements may apply where natural ventilation is limited.
2022 BUILDING REGULATION CHANGES
As of 15 June 2022, updates to Part L and F require:
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Lower U-value limits for both new and existing homes
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Mandatory background ventilation
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Full compliance with carbon efficiency targets
SUPPORTING THE NET ZERO 2050 GOAL
Best Deal Windows is committed to the UK government's goal of achieving net zero carbon emissions by 2050. By offering energy-efficient windows and doors, we help reduce overall carbon impact, support sustainable building practices, and future-proof properties against tightening regulations.
WHY CHOOSE US?
✓ A-rated systems with U-values as low as 0.8
✓ Fully compliant with Document L & F
✓ Expert installation with technical support
✓ Ideal for new builds and renovations
✓ Environmentally responsible solutions
📞 Contact us today to discuss your project requirements or request technical documentation.
At Best Deal Windows, we proudly supply and install window and door systems manufactured with the highest industry standards. Partnering with Selecta Systems, we offer Eurolook70 profiles combined with Thermaglas sealed units to deliver exceptional thermal efficiency and compliance with current UK Building Regulations. Our multi-chambered window and door profiles, in combination with 40mm triple glazing (TGU) or 28mm double glazing (DGU), can achieve U-values as low as 0.8 W/(m²K). These performance levels help homeowners reduce energy bills, improve comfort, and meet sustainability targets. [...]DOCUMENT L — Future Homes Standard ComplianceOur products fully comply with Document L, ensuring energy efficiency standards are met for both new and existing homes.New homes now require:
Windows: U-value ≤ 1.2 W/(m²K)
Doors: U-value ≤ 1.2 W/(m²K)
For existing homes:
Replacement windows must meet at least 1.4 W/(m²K)
Replacement doors (with >60% glass) must also meet at least 1.4 W/(m²K)
DOCUMENT F — Ventilation RequirementsAll replacement and new-build installations follow Document F, which requires background ventilation to ensure healthy air flow:
Trickle vents must be fitted regardless of whether existing windows had vents
Minimum vent sizes per room type:
Kitchens/Living Rooms: 8000mm² (2 EA)
Bathrooms (with or without toilet): 4000mm² (2 EA)
For new homes with natural ventilation, stricter requirements apply based on layout and air tightness.--- 2022 BUILDING REGULATION CHANGES As of 15 June 2022, updates to Part L and F require: - Lower U-value limits for both new and existing homes - Mandatory background ventilation - Full compliance with carbon efficiency targets Our windows and doors are manufactured in line with these updated standards, helping customers stay compliant while reducing energy use. --- SUPPORTING THE NET ZERO 2050 GOAL Best Deal Windows is committed to the UK government’s goal of achieving net zero carbon emissions by 2050. By offering energy-efficient windows and doors, we help reduce overall carbon impact, support sustainable building practices, and future-proof properties against tightening regulations. --- WHY CHOOSE US? ✔ A-rated systems with U-values as low as 0.8 ✔ Fully compliant with Document L & F ✔ Expert installation with technical support ✔ Ideal for new builds and renovations ✔ Environmentally responsible solutions Contact us today to discuss your project requirements or request technical documentation.
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SKYLIGHT
The Skypod Flat Roof Skylight
Revolutionise a flat-roof with a SAJE Skypod - Skylight
Imagine transforming your living space with a stylish skylight that lets the natural light flood in.
An inspirational modern feature that adds light and height to a room or living space. The Skypod Skylight is an innovation in skylights and has been specially crafted for the style aware home owner.
An Innovation in Design
In the past, most skylights have been a compromise. Aluminium systems are not only expensive, but the 'industrial' design isn't to everyone's taste. And PVC-U skylights have used existing conservatory systems, which look clunky because they're not designed to be skylights.
Before the Skypod from SAJE most skylights were constructed in Aluminium and where quite industrial in appearance and expensive. later constructions used standard double glazing elements which a best were perhaps even slightly unsightly!
The new SAJE Skypod has an admirable appearance is a cost effective and also can be made to match your existing UPVC doors and windows.
Choosing a SAJE Skypod provides:
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Very high levels of energy efficiency. A U value of 1 is attainable, helping you to save money of your home heating bills.
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Exceptional levels of design engineering, technical innovation and quality..
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The pitch is fixed at 20 degrees.
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A choose of glass colours including bronze, blue, natural and clear.
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With all the choices of colours and styles so can be sure you find the perfect Skylight to suit you.
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Our 10 year guarantee.
About our Appointments!
If we supply you with a quotation, you will not be followed up, we will leave you alone to make up your own mind, we do not sell double glazing to you,you buy double glazing from us - this is a promise.
Above all, we understand that your home is your most important asset and that nothing must be allowed to go wrong with your double glazing, hence our company motto 'nihil summimus - assume nothing'.
LONGLIGHT
A strip of heaven
Perfect for larger rooms and corridors, longlights are bands of modular skylights that provide attractive lighting conditions.
Sleek external profile
The prefabricated modular
flashing ensures fast and easy
installation as well as visual and functional consistency.
Let the light in
Elegant, minimalistic interior profile allows for maximum daylight and doesn’t detract from the building’s overall design.
RIDGELIGHT
An impression of openness
Ridgelights are the perfect solution for a wide variety of circulation spaces, gallery spaces and small internal courts where people meet or pass in transit. Ridgelights are mounted on a rail system that guarantees fast installation and a safe, economical building process.
A clear view
Ridgelight’s elegant, modern exterior lets you add light to your building design without adding unwanted visual noise.
Unobtrusive internal design
We’ve integrated all wiring, motors and other elements into the frame of the skylight to allow for a sleek profile, delivering more light into the areas below.
NORTHLIGHT
ATRIUM
Change the way you
look at indoor light
Similar to longlights, northlights are bands of Best Deal Windows Skylights. The characteristic upright design is primarily targeted installations that are directed towards the northern hemisphere for soft and reflected lighting. Northlights are ideal for galleries and museums as well as schools, offices and industrial facilities, where direct glare is unwanted.
Streamlined external profile
The prefabricated modular flashing is perfectly integrated in the roof surface. All flashings are easily installed externally, eliminating the need for any interior work.
A new standard
Northlight allows you to add aesthetic skylights to create spaces you never thought possible.
A symphony
of natural light
Atrium roof glazing consists of multiple rows of ridgelights or longlights, supported only by structural beams, forming large glazed areas of identical looking venting and fixed units.
Designing your building with atrium will help you benefit from all the functionalities offered by Best Deal Windows Skylights, such as integrated chain actuators, blinds and low pitch. This comprehensive functionality allows your atrium to perform much better than most traditional roof glazing.
Easy maintenance
The valley gutter between the rows of skylights offers easy access to external maintenance and cleaning of the skylights.
Full functionality
The Atrium gives you design freedom while maintaining all of the functionality of ridgelights or longlights.