1. Select a wall type from the dropdown
2. Or enter a custom U-value manually
3. Click Check to see insulation rating
U-values measure how effective a building element is at insulating. Lower values mean better insulation:
Improving U-values reduces heat loss and helps prevent condensation and mould. External wall insulation (EWI) and cavity wall insulation are the most effective solutions.
Our experienced damp specialists provide comprehensive surveys to accurately diagnose moisture issues. Get a detailed report with actionable solutions tailored to your property.