EPS insulation · Clwyd
EPS external wall insulation in Colwyn Bay
We quote EPS external wall insulation for homes in Colwyn Bay (LL29) and nearby Llandudno and Rhyl, with guide prices online and a free survey to fix the price. We compare EPS against mineral wool for each Colwyn Bay enquiry rather than assuming one board suits every wall.
- Free survey in LL29 and nearby
- Guide price from £105 per m² + scaffold, 0% VAT
- Fixed written price before work starts
Free survey in Colwyn Bay
Postcode, service and a phone number is all we need.
What you get
- Used on low-rise houses; combustible, so not for taller buildings
- Thermal conductivity around 0.031–0.038 W/mK depending on grade
- Grey graphite EPS reaches a given U-value with a thinner board
- Easy to shape around bays, arches and reveals

Before we quote in Colwyn Bay
We cover Colwyn Bay and nearby Llandudno, Rhyl and Bangor (Gwynedd). Colwyn Bay sits around 35 miles from Wrexham. North Wales has many solid stone and slate-built homes, Victorian seaside terraces and post-war council estates.
Exposure to wind-driven rain varies across Clwyd: sheltered town streets fare better than walls on high ground or facing the prevailing weather, and the render, beads and cill details are chosen with that in mind.
EPS is a common choice for two-storey houses, mainly on cost and weight, and we price it alongside mineral wool for homes in Colwyn Bay.
- Postcode district
- LL29
- County or area
- Clwyd
- Nation
- Wales
- Nearby
- Llandudno, Rhyl, Bangor (Gwynedd), Llangefni
Planning and building control in Wales
We check Colwyn Bay addresses for conservation areas and listing before quoting, because Welsh permitted development rules don't cover every external change.
Building control in Wales applies to most insulation and re-rendering jobs of this size; the quote states who submits the notice.
How thick does the board need to be?
On a 225mm solid brick wall, around 90mm of grey EPS or 100–110mm of white EPS typically gets close to 0.30 W/m²K. Stone walls, concrete panels and hollow-block walls start from different points, so the system supplier's calculation for your wall sets the final thickness.
EPS external wall insulation prices in Colwyn Bay
| Item | Guide price | Notes |
|---|---|---|
| EPS + silicone render | £105–£145 per m²0% VAT | Excluding scaffold |
| Grey EPS uplift | +£4–£8 per m²0% VAT | Thinner board for the same U-value |
| Bungalow, full house | £6,700–£12,8000% VAT | 55–75 m² of wall, including scaffold |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
What happens next
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
EPS insulation in Colwyn Bay: questions
White or grey EPS?
Grey graphite EPS insulates better per millimetre, so it is the pick where space is tight at the eaves or around windows. White EPS is slightly cheaper and works well where the extra thickness isn't a problem.
Is EPS insulation safe on a house?
EPS is used inside render systems that are fire-tested as a whole. On low-rise houses it is widely used. On taller buildings, or where guidance calls for non-combustible materials, mineral wool systems are specified instead.
How long does EPS last on a wall?
The board itself doesn't degrade when protected by the render system. Service life depends on the render, sealants and detailing, typically 25–30 years or more with maintenance.
Do you cover Colwyn Bay?
Yes — we survey and quote EPS external wall insulation in Colwyn Bay (LL29) and nearby Llandudno, Rhyl and Bangor (Gwynedd), with a fixed written price before any work starts.