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.
Discuss your requirements with a technical sales team member. We offer advice at all stages of the building process, from design work to on site support.
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