Windows and doors are subject to Building Regulations! Please note the regulations changed in 2022 and it’s the customers responsibility to ensure the products are compliant for their intended use where they’re installed. We appreciate customers are looking to suppliers for guidance and practical solutions to the stringent revisions to the regs. We therefore recommend you use our specification guidance to understand the specification required to comply, including the requirements for fire escapes, trickle vents, enhanced security and energy ratings and U-values. Particularly the requirements for ventilation and energy ratings vary between England, Wales and Scotland.

Please contact us for more information so our team can support with your queries.

England

New Build

Your windows and doors will need to achieve a U-value of 1.6 or better.

If the U-value is between 1.3 – 1.6 (higher than the new-build target of 1.2), another element such as the external walls will need to achieve a better u-value than the target stated for that element for the dwelling to achieve its minimum standard of total energy performance.

Renovation / Extension

Your windows will need to achieve an energy rating of B or U-value of 1.4.

Your doors will need to achieve an energy rating of C or U-value of 1.4.

Scotland

New Build

Your windows and doors will need to achieve a U-value of 1.4 or better.

If the U-value is between 1.3 - 1.4 (higher than the new-build target of 1.2), another element such as the external walls will need to achieve a better u-value than the target stated for that element for the dwelling to achieve its minimum standard of total energy performance.

Renovation / Extension

Your windows and doors will need to achieve an energy rating of B or U-value of 1.4.

Wales

New Build

Your windows and doors will need to achieve a U-value of 1.4 or better.

If the U-value is 1.4 (higher than the new-build target of 1.3), another element such as the external walls will need to achieve a better u-value than the target stated for that element for the dwelling to achieve its minimum standard of total energy performance.

Renovation / Extension

Your windows will need to achieve an energy rating of B or U-value of 1.4.

Your doors will need to achieve an energy rating of C or U-value of 1.4.

Ground Floor Window

Access to Hallway

You do not need fire escape

No Access to Hallway

You need a fire escape

Upper Floor Windows

On upper floors up to 4.5m from ground level, all habitable rooms must be fitted with fire escape windows, unless the room has direct access to a protected stairway.

On floors above 4.5m from ground level, a protected stair or alternative escape methods such as sprinklers may be required.

Will the window or door be installed on the ground floor or basement level?

Yes

Your windows or doors will need to meet PAS 24 Security Standards.

No

Will the windows or doors be replacing windows installed on or after the 1st October 2015?

Yes

Your windows or doors will need to meet PAS 24 Security Standards.

No

Your windows will not need to meet PAS 24 Security Standards.

Are the windows and/or doors being fitted into your main home?

No

You do not need trickle vents.

Yes

Does the room have dedicated mechanical background ventilation?

Yes

You do not need trickle vents.

No

Yes you do need trickle vents

England / Wales

Yes, your products will require trickle vents. In habitable rooms and kitchens, a min. of 8000mm2 equivalent area is required per room (10,000mm2 in single story dwellings). Bathrooms (with or without a toilet) require a min. of 4000mm2.

Scotland

Yes, your products will require trickle vents. Generally, a min. of 10,000mm2 equivalent area is required per room (12,000mm2 in apartments). However, where infiltration rates in a dwelling exceed 10m3/h/m2 @ 50 Pa, which may often be the case in existing buildings, the ventilation required may be reduced to 8000mm2 for apartments and 4000mm2 for all other rooms. Alternatively, the overall provision of trickle ventilation in a dwelling may be provided at an average of 6000mm2 per room, with a minimum provision of 4000mm2 in each apartment.

Please note that all information provided regarding building regulations is for guidance purposes only. It is the customers responsibly to ensure individual specification requirements are met. External Doors Only will not be held responsible for any order placed that do not meet individual requirements.