External wall insulation in Bangor, Gwynedd
Looking for external wall insulation in Bangor in Gwynedd? We survey homes across Gwynedd and the LL57 postcode district, measure every wall and give you a fixed price in writing before any work is booked.
Homes in and around Bangor, Gwynedd
Bangor in Gwynedd is in the LL57 postcode district. 3 other towns we cover are within 25 miles.
From Bangor in Gwynedd we also cover Caernarfon (8 miles away), Colwyn Bay (18 miles) and Holyhead (21 miles).
In exposed parts of Gwynedd, we pay particular attention to how rain is shed at the eaves, sills and corners, where wind-driven water finds its way in.
Nearby towns we cover: Caernarfon (8 miles), Colwyn Bay (18 miles), Holyhead (21 miles).
External wall insulation prices in Bangor, Gwynedd
Guide prices for external wall insulation in Bangor in Gwynedd run from about £109 to £175 per square metre installed, depending on system and finish; scaffolding priced per house, with VAT at 0% on homes until 31 March 2027.
Whole-house prices include standard scaffolding, beads, sills and refitting services; unusual access, footpath licences and wall repairs are quoted separately.
Popular services in Bangor, Gwynedd
- EPS insulated render
- Insulating lime render
- Silicone render finish
- Mineral & silicate render
- Non-traditional houses
- Semi-detached EWI
- Flats & low-rise blocks
- Social housing EWI
- Failed EWI remediation
- EWI surveys
- All 24 services
Rules that apply in Bangor, Gwynedd
- Building regulations
- Wales has its own Building Regulations and Approved Document L. Renovating a large part of an external wall brings the energy standards into play, so building control approval is needed for EWI.
- VAT
- Installing insulation in a home is zero-rated for VAT until 31 March 2027, then 5%.
Checked October 2026. Rules change, so we confirm them for your address at survey.
External wall insulation in Bangor, Gwynedd: questions
How much should I budget for external wall insulation in Bangor in Gwynedd?
Budget around £109–£175 per square metre of wall for the system and finish, plus scaffolding priced per house. The survey measures your walls in Bangor in Gwynedd and fixes the total in writing.
Do you cover Caernarfon as well as Bangor in Gwynedd?
Yes. From Bangor in Gwynedd we also cover Caernarfon, Colwyn Bay and Holyhead, and the rest of Gwynedd.
How long will the work take in Bangor in Gwynedd?
Two to six weeks on site for most houses, depending on size: bungalows are quicker, detached houses longer, weather allowing. Render isn't applied in rain or frost.