EWI repairs · County Londonderry
EWI repairs and maintenance in Derry~Londonderry
From Derry~Londonderry to Strabane, we price EWI repairs after a measured survey — no guesswork, and no work starts until the price is agreed in writing. EWI repairs in Derry~Londonderry start with finding where water or damage got in, not just covering it.
- Free survey in BT48 and nearby
- Guide price from £540 inc VAT
- Fixed written price before work starts
Free survey in Derry~Londonderry
Postcode, service and a phone number is all we need.
Part of every quote
- Sealants renewed at windows, pipes and penetrations
- Colour-matched finish or elevation recoat
- Bird and woodpecker damage repaired
- Water ingress traced at cills, copings and eaves

Local considerations in Derry~Londonderry
We also cover Strabane and Limavady, close to Derry~Londonderry. Northern Ireland has many rendered and pebble-dashed homes, older solid-walled rural houses, and estates built by the Housing Executive.
Parts of County Londonderry 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 Derry~Londonderry is still under guarantee, we'll suggest checking those terms before booking us.
- Postcode district
- BT48
- County or area
- County Londonderry
- Nation
- Northern Ireland
- Nearby
- Strabane, Limavady, Coleraine, Omagh
Planning and building control in Northern Ireland
Repairs, cleaning and like-for-like patching don't usually need planning permission. If the work grows into replacing most of a wall's render, we check with the council's building standards or building control team first.
What causes EWI to fail?
Most problems start at details: cills that are too short or not sealed, unsealed pipe penetrations, missing drip beads, ground levels too close to the base track, or impact at low level. Where a defect is widespread, we report the likely cause before quoting.
EWI repairs and maintenance prices in Derry~Londonderry
| 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 Derry~Londonderry: questions
Why is my EWI cracking?
Common causes are missing movement joints, poor mesh overlap, fixing problems or movement in the wall. We look for the cause rather than filling the crack.
Can damaged EWI be patched?
Yes, provided the board behind is dry and sound. Wet or crushed board is cut out and replaced.
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.
Do you cover Derry~Londonderry?
Yes — we survey and quote EWI repairs in Derry~Londonderry (BT48) and nearby Strabane, Limavady and Coleraine, with a fixed written price before any work starts.