Yes — all types of cavity wall insulation can be removed. The process varies depending on what was installed, but extraction is always possible.
Cavity wall insulation can always be extracted, regardless of the type installed and regardless of how long ago it was put in. The process and cost vary depending on the material, but no type of cavity wall insulation is impossible to remove.
In some cases — particularly older mineral wool installations that have become compacted — removal requires more access holes than a standard extraction. Foam insulation requires the most effort. But all types can be fully extracted using the right equipment.
A borescope survey before extraction confirms what's in the cavity, its condition, and allows us to plan the extraction efficiently. This reduces time and cost and ensures nothing is left behind.
The easiest type to remove. Small polystyrene beads vacuum out cleanly through access holes. Minimal mess, fast process. EPS bead installations are the most straightforward extractions we carry out.
The most common type in older government-funded installations. Extracted using industrial vacuum equipment. May require more access holes than bead if the material has compacted. Fully removable.
Similar process to mineral wool. Can absorb moisture significantly — wet blown fibre requires careful extraction. Multiple access points typically needed. Fully removable.
The most complex type to remove. Foam sets solid within the cavity. Removal requires mechanical breaking of the foam through access points, combined with vacuuming. Takes longer and costs more than other types, but is fully removable.
Camera inspection confirms insulation type, condition and coverage before work starts.
Small holes drilled at strategic intervals in the external wall (mortar joints where possible) to provide extraction access.
Industrial vacuum equipment extracts all insulation material. The process is checked at multiple points to ensure complete removal.
Access holes repointed and sealed. Written report provided documenting findings and work carried out.
Once extraction is complete, the cavity needs time to dry out. How long this takes depends on how wet the insulation was:
After drying, you have several options:
Contact us to arrange a survey. We'll inspect the cavity and confirm the best extraction approach for your property.
