Check the walls before choosing insulation
Cavity Wall Insulation
Explore insulation for the space between a property’s inner and outer walls.
WHAT IT INVOLVES
Know what you’re asking for.
A survey should establish whether the walls are suitable and identify any repairs needed first. Share information about existing insulation or damp. The proposed material and installation method should follow that assessment, with the walls covered clearly recorded.
What to discuss in the scope
- A proposed insulation specification for suitable cavity walls.
- An agreed installation scope and completion records.
Before the visit
- Find previous insulation documents and relevant building surveys.
- Mention extensions, damp concerns and restricted access around the home.
Worth knowing
All work needs a tailored quote and suitability check. Repairs, extraction and access equipment are included only when specified. No saving or EPC rating is guaranteed.
Further reading: Government guidance on home insulation ↗. Guidance checked 17 October 2026.
Your questions, answered.
Can every cavity wall be filled?
No. Suitability must be checked for the particular construction and condition.
What if insulation is already present?
Tell the assessor. Its condition and extent need checking before further work is proposed.
YOUR NEXT STEP
Ready to discuss your property?
Add the service to your enquiry and include the details we’ll need.