U-value Calculations evaluate the thermal performance of a building element, such as a roof, floor or wall. The building regulations require you to prove the thermal performance obtained by a building element, and a U-value calculation provides this proof.
Designed to assist architects, designers, developers, and contractors to accurately carry out assessments to ensure compliance with the latest requirements of the Part L building regulations. The software is an essential online tool for meeting the new standards and improving the energy performance of new and existing buildings.
NEW - U-Value Calculator in Our Members Area
Our U-value calculations are carried out in accordance with BRE443:Conventions for U-value Calculations and can be submitted with your building control applications to demonstrate compliance.
U-value calculations are provided free of charge where our products are being used.
To discuss your requirements by phone, call us on 01250 872 261.
To discuss your requirements by email, contact us at
Alternatively, you can fill out the enquiry form.
U-Value & Condensation Risk Calculator
Features
- U-values calculated to BS6946 2017 including Annex C (Surface Resistances), Annex D.1 & D.2 (Thermal Resistance of Airspaces), Annex F (Correction to thermal transmittance).
- U-values calculated to ISO 13370 2017 – Thermal performance of buildings – Heat transfer via the ground
- U-values for light steel-frame construction calculated to BRE Digest 465
- Condensation Risk Analysis calculated to ISO 13788 (Glaser method), supporting infinite condensation planes. Automated external environment corrections for Suspended Floors & Slab on Ground Floor element types.
- Postcode Specific Climate Data – The condensation risk will be calculated based on up to date (pulled at time of project creation) 20-year average temperature & humidity data for the project’s postcode. Local climate data is a requirement of both BS5250 & ISO 13788.
- Print full project to PDF
- Custom air layers with low emissivity and ventilation
- Custom fixing profiles
- Adjustable return periods, external and internal environments