Cavity wall insulation is excellent when installed correctly in suitable properties. However, problems can occur when insulation is installed in homes that aren't appropriate, or when the wrong materials or techniques are used.
Failed cavity wall insulation can cause serious issues including penetrating damp, black mould, cold spots, and structural damage. If you're experiencing these problems, extraction may be the solution.
We examine your cavity with a camera to diagnose the problem accurately.
Independent report provided, useful for insurance claims or complaints.
All insulation material extracted and cavity cleaned thoroughly.
If you've had cavity wall insulation installed and notice any of these problems, extraction may be necessary.
Damp patches appearing on internal walls, especially after rain
Cold spots on walls that weren't there before insulation
Black mould growth on walls or around windows
Peeling wallpaper or bubbling/flaking paint
Musty or damp smell inside your home
Cracks in render or damaged pointing on external walls
Increased heating bills despite having insulation
Health issues that worsen when at home
We use specialist equipment and proven techniques to safely and completely remove failed cavity wall insulation.
Borescope inspection to assess cavity condition and extent of the problem.
Strategic holes drilled at optimal points for complete extraction access.
Industrial extraction equipment removes all insulation material from the cavity.
Holes sealed, full report provided, and advice on next steps.
Properties in exposed locations with high driving rain, narrow cavities, or existing damp issues should never have had cavity insulation installed.
Some insulation materials are unsuitable for certain wall types. Using the wrong material leads to moisture absorption problems.
Gaps, voids, or incomplete coverage leave areas without insulation while trapping moisture in others.
Once the failed insulation is removed, your cavity will need time to dry out. Depending on the severity of the moisture problem, this could take several weeks to months.
After the cavity has dried, you have several options:
For exposed locations, this may be the safest long-term option.
If conditions allow, we can re-insulate using appropriate material.
Alternative insulation methods that don't use the cavity.
Costs vary depending on property size and insulation type. A typical semi-detached house ranges from £1,500 to £3,000. We provide a fixed quote after our survey so there are no surprises.
Potentially, yes. If your insulation was installed under a government scheme and has failed, you may be able to claim through the installer's guarantee or the CIGA (Cavity Insulation Guarantee Agency). Our survey report can support your claim.
Most extractions are completed in 1-2 days depending on property size and the type of insulation installed. We'll confirm the timeline during your survey.
If the damp is caused by failed cavity wall insulation, extraction should resolve the issue once the cavity has dried. However, we'll assess whether there are other contributing factors during our survey.
Book a survey to find out if extraction is the right solution for your home.
