Cavity Wall Insulation Extraction

When cavity insulation fails, damp follows

Cavity wall insulation was installed in millions of UK homes as an energy upgrade. When it works, it's excellent. When it fails - through slumping, saturation or poor original install - the same material that should keep you warm becomes a wick, pulling rain from the outer leaf to your internal walls.

Our extraction process uses a controlled drilling pattern, high-airflow vacuum extraction and full internal inspection with a borescope. We work systematically across the elevation so nothing is left behind in awkward corners or below window openings.

Once the cavity is fully cleared, we repoint the drilled holes with a matched mortar so the exterior looks untouched. The wall can then dry out naturally, and any re-insulation can be considered separately, on your terms.