
Knowledge & Advice

Choose your next step
First, choose the question you need answered. Then use the relevant guide to prepare for a conversation about your building.
Also check publication dates and current manufacturer information. Advice and project photographs cannot replace assessment, preparation and a suitable written specification.
For independent guidance on a deeper wall-insulation upgrade, read the Energy Saving Trust’s solid-wall insulation advice. Then confirm which complete build-up suits your property.
Explore all published guides and updates. Check each publication date and confirm current product documents for your project.