Before inspection, it’s important to know what cavity wall insulation is. It involves filling the gap between two walls (inner and outer) with insulating material. This helps retain heat and reduce energy bills. Homes built after the 1920s usually have cavity walls, while earlier ones tend to have solid walls.
Look for External Clues on the Wall
Check your home’s outer walls for small drill holes filled with cement—these are signs insulation was added. Also, inspect for damp spots or mold indoors, which could indicate insulation failure. Uneven heating or cold patches on walls can also suggest insulation problems needing further assessment by a professional.
Hire a Professional for a Thermal Survey
A thermal imaging survey is the most accurate way to inspect cavity wall insulation. Professionals use infrared cameras to detect heat loss across your walls. This can pinpoint missing or damaged insulation areas. Scheduling a survey during colder months ensures better accuracy and helps you take timely action to fix any issues.
