Fabric & thermal detail
U-value calculations
Know how your construction specification performs before it reaches site.
What this service helps you do.
A U-value describes heat transfer through a building element. Ordellis calculates the proposed wall, roof or floor build-up using the available material and construction information, helping the energy assessment reflect the actual specification.
What’s included.
- Calculations for the agreed wall, roof and floor build-ups.
- A record of material layers and thermal properties used.
- Review of the effect of insulation or material changes.
- Reports suitable for coordination with the project’s energy calculations.
What we need to get started.
- Detailed construction build-ups and layer thicknesses.
- Manufacturer information and declared thermal properties.
- Details of repeating bridges, fixings and structural elements.
- Relevant floor dimensions and boundary conditions.
Material substitutions and changes in thickness can alter the calculation. Confirm the final build-up when specifications change.
Your questions, answered.
Can you compare insulation options?
Yes. Provide the proposed products and thicknesses, and identify which build-ups you want included in the quotation.
Does a U-value cover junction heat loss?
A U-value relates to a building element. Linear heat loss at junctions is considered separately through PSI thermal bridge calculations.
Connected expertise
Services that work together.
Tell us what you’re building.
Share your drawings and project location for a clear scope and quotation.
