REH editorial starter discussion. Prepared by REH to invite genuine community replies.
REH starter discussion — UK; suitability is property-specific.
Start with a survey confirming the wall construction, cavity condition and exposure, rather than assuming from the building’s age. Existing damp, defects or water ingress need investigation before insulation is specified. Ask for the suitability findings, proposed material, installation scope and guarantee in writing. A recommendation should explain why the measure fits this particular property.
Join the discussion: Has a survey identified a clear cavity and any existing moisture or wall defects?
Suggested next step: Arrange a suitability survey before accepting an insulation quote.
Sources checked 3 October 2026:
Energy Saving Trust: cavity wall insulation: https://energysavingtrust.org.uk/advice/cavity-wall-insulation/