EWI repairs · England
EWI repairs and maintenance in Cornwall
Quotes for EWI repairs in Cornwall set out the system, detailing, access and VAT position in writing. EWI repairs in Cornwall start with finding where water or damage got in, not just covering it.
- Free survey and fixed written price
- Guide price from £540 inc VAT
- Planning and building control checked for England
Free survey in Cornwall
Tell us the postcode and what you need.
What you get
- Sealants renewed at windows, pipes and penetrations
- Cracks investigated for movement or failed fixings
- Water ingress traced at cills, copings and eaves
- Impact damage cut back and repaired with mesh
- Bird and woodpecker damage repaired

Before we quote in Cornwall
The South West has many stone and solid-walled cottages, exposed coastal properties and a share of post-war system-built houses, including types such as the Cornish Unit.
Parts of Cornwall fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
Where an EWI system in Cornwall is still under guarantee, we'll suggest checking those terms before booking us.
- Nation
- England
- Region
- South West
- Towns covered
- Redruth, Falmouth, St Austell, Truro, Camborne, Penzance, Newquay, Bodmin
- Guide price
- From £540 inc VAT
Approvals in England
Repairs, cleaning and like-for-like patching don't usually need planning permission or building control. If repairs grow into re-rendering more than half of a wall, Building Regulations energy rules can apply.
Listed buildings are the exception: even small external repairs can need listed building consent, so tell us if your property is listed.
How is damaged EWI repaired?
The damaged area is cut back to sound render and board. Wet or crushed insulation is replaced, a new base coat with overlapping mesh is applied, then primer and a matching finish. The repair overlaps the existing mesh so it's reinforced like the original.
EWI repairs and maintenance prices in Cornwall
| Item | Guide price | Notes |
|---|---|---|
| Small EWI repairs, single visit | From £540inc VAT | Ground-floor access |
| Larger areas | £102–£180 per m²inc VAT | Excluding scaffold |
| Condition report | From £295inc VAT | Written report with photos |
Confirmed by a fixed written quote after survey. Prices include VAT at 20%.
How it works
Enquiry
Send your postcode and a few details.
Measured survey
Walls, damp, eaves, cills and services recorded.
Written price
A fixed price with the specification attached.
Work and handover
Installed, inspected and documents handed over.
EWI repairs in Cornwall: questions
My EWI was installed under a grant — who repairs it?
First check the guarantee paperwork and contact the original installer or guarantee provider. If that route isn't available, we can quote.
Can damaged EWI be patched?
Yes, provided the board behind is dry and sound. Wet or crushed board is cut out and replaced.
Will the repair be visible?
Usually slightly, because the existing finish has weathered. A recoat of the elevation evens it out.
Do you cover all of Cornwall?
Yes. We survey and quote EWI repairs across Cornwall, including Redruth, Falmouth, St Austell, Truro, Camborne.
Do I need planning permission in England?
For houses, external wall insulation and render are often permitted development where the finish looks similar to the existing walls. We check your address before quoting.