External wall insulation in Bristol
We provide external wall insulation across Bristol, from Bishopsworth and Brislington to smaller towns and villages, with a free survey and a fixed written price for every home.
Homes across Bristol
Bristol's Victorian terraces include many solid brick and Pennant stone walls, and several neighbourhoods are conservation areas where render needs permission.
Your quote will name the certified system, the board thickness and the calculated U-value for your walls, not a vague 'insulation package'.
Services in Bristol
- EWI installation
- EPS insulated render
- Mineral wool EWI
- Phenolic EWI
- Wood fibre EWI
- Brick slip EWI
- Insulated cladding
- Insulating lime render
- Silicone render finish
- Mineral & silicate render
- Pebbledash & dry dash EWI
- Solid wall insulation
- Non-traditional houses
- Bungalow EWI
- Terraced house EWI
- Semi-detached EWI
- Detached house EWI
- Park home insulation
- Flats & low-rise blocks
- Social housing EWI
- EWI for landlords
- EWI repairs
- Failed EWI remediation
- EWI surveys
Towns we cover in Bristol
The rules in England
- Planning
- On a house, external wall insulation is usually permitted development if the finish looks similar to the existing walls. Render or cladding on a house in a conservation area, National Park, National Landscape (AONB), the Broads or a World Heritage Site needs planning permission. Flats and maisonettes have no householder permitted development rights, listed buildings need listed building consent, and an Article 4 direction can remove rights locally.
- Building regulations
- Insulating more than half of a wall, or more than a quarter of the whole building envelope, counts as renovating a thermal element under the Building Regulations, so the wall should reach 0.30 W/m²K where that is technically, functionally and economically feasible, and building control must be involved.
- Fire safety
- On houses and other residential buildings up to 11m, Approved Document B sets surface rules only within 1m of a boundary. Residential buildings with a storey 11m or more above ground should have insulation of class A2-s1,d0 or better, and combustible materials are banned in the external walls of relevant buildings with a storey at least 18m up.
- Funding
- Low-income households in homes rated below EPC C can apply for Warm Homes: Local Grant where their council is taking part. The Great British Insulation Scheme closed on 31 March 2026, and ECO4 closes on 31 December 2026; its final months are for finishing and putting right existing work. Grant schemes use their own approved installers, so check a scheme's installer rules before booking; our quotes are for privately funded work unless we confirm otherwise in writing. Grants guide
- 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 Bristol: questions
How much does external wall insulation cost in Bristol?
Guide prices run from about £109 to £175 per square metre for the system and finish, plus scaffolding. For an average home that's about £8,595–£11,695 for a mid-terrace, £13,995–£19,195 for a three-bed semi and £20,495–£28,095 for a four-bed detached house, with VAT at 0% on homes.
How long does external wall insulation take?
It depends on the size of the house and the weather: bungalows usually take one to two weeks on site, terraces two to three, semis three to four and detached houses four to six. Blocks of flats take longer.
Can I stay at home during the work?
Yes. All the work is outside, so you can live at home as normal while the scaffolding is up.
What finishes can I choose?
Silicone or mineral render in many colours, pebbledash, brick slips or cladding, alone or combined.