The thermal insulation of a building is measured by its "U-value". A U-value measures how well a building component, e.g. a wall, roof or a window, keeps heat inside a building. The lower the U-value, the better the insulation provided by the material. The minimum U-value required in the external walls of a new build house is currently 0.30 W/m²K. With the Code for Sustainable Homes now coming into force lower U-values are now being asked for.

To achieve your targets we can supply insulation solutions that can achieve 0.30 to less than 0.10 W/m²K, giving our customers a full range of options to choose from for any type of project and to comply with any SAP calc requirements.

Air-Tightness

Air-tightness is a measure of the amount of air leaking out of the building. A building with poor air tightness will loose a significant amount of heat as warm air escapes. Warm, damp air leaking into the fabric of the house can also lead to condensation. 

Current Building regulations have a minimum air-tightness of 7m³/h/m² while 3m³/h/m² is required to get a code 3 for Code for Sustainable Homes. Frame Wise is able to achieve air-tightness as low as 1m³/h/m².