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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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SLIDING (PATIO) DOORS
The best deal windows sliding patio door design offers the same quality and durability you have come to trust in our other window and door products. This door system also offers true high performance, superior operation and thermal ef- ficiency, making it the perfect choice for residential remodeling, new construction and light commercial projects.
Advanced Design Features
The best deal windows incorporates multiple chambers for increased thermal performance and is robust enough to accommodate triple glazing. These features enable this door to meet today’s stringent energy code requirements as well as the stricter codes being considered for the future.
Available in Popular Sizes
This door can be ordered as a knock-down kit in popular US and Canadian sizes or custom fabri- cated to your requirements. Configurations include two-, three- and four-panel operating units with optional side lites and transoms.
Quiet and Energy Efficient With multiple
chambers made of naturally insulating uPVC and the latest in sealing technology, this door provides excellent thermal performance while keep- ing sound transmission to a minimum.
Security
Galvanized steel-reinforced sash profiles are engineered to withstand windloads and to provide strength for hardware fasteners. Internally glazed sashes make it extremely difficult to remove the glass from the outside. Hardware components feature multi-locking and “anti-lift” technology.
Style Options
Customize your look with a modern white, beige or blue white finish, or choose a solid color or wood- grain foil. Choose two, three or four panels. You can even specify the thickness of the insulated glass unit, ranging from 1 in (25 mm) up to 1 3/8 in (35 mm) and choose from a range of accessories.
Low Maintenance
Our doors withstand even the toughest conditions with minimal maintenance. Only an occasional cleaning with mild detergent is required to keep the frames looking great and only occasional oil maintenance for the locks. The aluminum running track enables continuously smooth, trouble-free operation.
best deal windows patio doors are more than just an entrance to your home.
Strength, stability and excellent impact resistance are ensured by thick profile walls, internal webs and the use of galvanised steel reinforcement. Angled external faces dispel dirt and water and the slim profile matches our UPVC windows and residential doors making our patio doors ideal for conservatories and sun rooms. Our claim to superior quality is backed by ISO9001:2008 certification and are fully guaranteed as standard. All of which means that you will be warm, cosy, draught proof and safe no matter what the weather. Whether traditional or contemporary, town or country, we have patio doors to suit every style of property and with their maximum glazing area and clean lines, our doors are the perfect way to enjoy your garden all year round from the comfort of your home.
With aluminium patio doors to suit residential and commercial applications in single, double and triple track configurations, you can be sure we have the right door for you.
Characteristic slim profile sight lines, large expanses of glazing and smooth, reliable operation make aluminium patio doors the ideal choice to provide panoramic views and easy access to rear gardens, balconies, and communal areas. Using the latest polyamide thermally broken profiles, our aluminium patio doors will also create a highly effective barrier to the elements and are capable of meeting the latest building regulations for thermal performance without the need for expensive low iron glass. Our selection of patio doors are all available with state of the art 5-point locking systems, giving you a slender and attractive door with zero compromise on security.