A warmer home, from the outside
External wall insulation (EWI) wraps the outside of your walls in a layer of insulation, which is then finished in render. It keeps more heat inside, and because the work happens outside, there's no loss of room space and much less disruption indoors than insulating from the inside.
We fit and render external wall insulation for homeowners and builders across Great Yarmouth, Norfolk and Suffolk.
Who it suits
- Solid-wall homes, such as older properties without a cavity to fill
- Houses that need re-rendering anyway, where insulation can be added at the same time
- Cold, damp-feeling rooms on exposed, weather-facing walls
- Extensions and refurbishments being brought up to a better standard
How an insulated render system goes on
- Survey and quote. We look at the walls, openings, pipes and fittings, and price the job.
- Preparation. Walls cleaned and prepared, and fittings such as downpipes and lights taken off or extended.
- Insulation boards. Boards fixed to the walls with adhesive and mechanical fixings.
- Base coat and mesh. A reinforced base coat goes over the boards.
- Render finish. A decorative render top coat, such as silicone K Rend, finishes the system.
Things to know before you start
Adding insulation makes the walls thicker, so window sills, roof edges, pipes and anything fixed to the wall may need adjusting, and we'll point these out when we quote. External wall insulation can also need building regulations approval, and if you live in a conservation area or a listed building, check with your local planning team first. If you're looking at grant funding, check the scheme's own requirements for installers before work is booked.