Requirement Calculators

Windows and doors are subject to Building Regulations! Please note the regulations changed in 2022 and it’s the installer’s responsibility to ensure the products are compliant for their intended use where they’re installed. We appreciate installers are looking to suppliers for guidance and practical solutions to the stringent revisions to the regs. We therefore recommend you use our specification tool 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 visit our window and door FAQ for more information or contact us so our team can support with your queries.