Cavity Wall Extraction
What Insulation Can Be Removed?
- Rockwool mineral fibre
- Loose or bonded polystyrene bead
- Whitewool glass fibre
- Urea Formaldehyde insulation
How Is It Removed?
A selection of bricks are removed to allow for compressed air to be blown into the cavity whilst a specialist vacuum collects the waste from the bottom. All waste is bagged and disposed of safely from site.
Once all the material is extracted, bricks are replaced and any necessary remedial works carried out to ensure the building is left in the same condition it was found.
How Long Does It Take?
Based on an average 3 bedroom semi-detached house, it can take up to 2 working days for a 2-man team to extract all the existing material.
Why Remove The Insulation?
Due to the UK’s damp climate, occasional high winds and frosty weather conditions, water can enter through gaps in the brickwork and pointing. Once the insulation becomes wet in the cavity, it is almost impossible for it to dry out causing damp spots on the internal walls or salt deposits on the surface of the brickwork.
Here are a few common examples of why insulation may need to be removed:
- Defective wall ties
- Porous brick work
- Defective render
- Flooding/burst pipes
- Poorly installed insulation
- High exposure to wind driven rain
How Much Does It Cost?
In order to provide a quotation, we would need to send a surveyor to assess the amount of defective material. If you have a cavity insulation guarantee, it may be worth contacting the guarantee provider to see if you’re covered for any of the above causes.
Surveys are free of charge and no obligation:
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