Cavity Wall Insulation
Around 33%* of a home’s heat is lost through uninsulated cavity walls. By having insulation professionally installed into the space between your home’s two layers of brick, you will save energy and reduce your heating bills.
You can expect to save around £300* per year on your energy bill (based on a gas-heated semi-detached home) rising to £520* per year (based on a gas-heated detached home).
Save energy with cavity wall insulation
Our team can insulate the walls of an average 3 bed-semi in just a few hours. The team will inject EPS beads into the cavity from the outside of your home via small, carefully drilled holes which are made good with cement afterwards. Afterwards, less heat can escape from your home through the walls.
WATCH: our handy video guide
Getting cavity wall insulation
Get in touch with us, even if you’re unsure of your wall type, and we’ll advise over the phone or by email. Then we’ll book you a FREE home visit for a Home Surveyor to come and take a look at your property and confirm suitability, do a few checks and take some measurements.
The insulation will be fitted shortly after by one of our friendly technician crews.
We aim to get back to you by the next working day
Identifying your wall type
As well us using the age of your property to determine its wall type, you can also take a look at the brick pattern.
Solid wall
The bricks will have an alternating pattern so that some bricks are laid lengthways and some bricks are laid widthways, showing the smaller ends.
Cavity wall
The bricks will have an even pattern with all the bricks laid lengthways.
Best quality,
guaranteed
EvoBead is our sister company that manufactures and supplies high-performance EPS bead for cavity wall insulation from their premises in South Wales.
All our cavity wall installations are carried out using the EvoBead product meaning we are absolutely guaranteed of its thermal properties and performance.
Why choose Evolve?
We’re great at what we do and our team has over 450 years’ experience between us so we know how to do an excellent job. We only use the best materials and all our surveyors and engineers are highly trained and take pride in their work.
2015
Established in 2015
60
60 members of staff
450
450 years of combined experience
15,000
Over 15,000 homes decarbonised since 2015
80
A further 80 homes decarbonised every week
3,000
3,000 cavity extractions project managed
We’re open between 9am and 5pm, Monday to Friday. Or drop us a message and we’ll get back to you ASAP.
Cavity Wall Insulation FAQs
A cavity wall is a construction type whereby a wall is constructed of two layers of a brick with an air gap (or cavity) between them. It is how homes have typically been constructed in the UK since the 1930s.
Cavity wall insulation is when insulation is injected into the air gap (or ‘cavity’) between the two layers of bricks that make up a cavity wall. The insulation creates a thermal barrier, preventing excessive heat loss through a home’s walls.
Homes should be cavity wall insulated, if possible, to help the occupants reduce their energy usage and therefore lower their energy bills.
A typical three-bed semi can be installed in around half a day.
The installation crew need good access to your home’s exterior walls so please move flower pots, hanging baskets and other obstructions.
Cavity wall insulation can save up to £520 per year* on a gas-heated, detached home’s energy bills.
We install EvoBead, manufactured by our sister company so we are 100% sure of its exceptional insulating properties and performance.
It depends on a range of factors so it is hard to give a figure. Plus, we often have access to funding that can make cavity wall insulation free or partially funded, depending on your circumstances. Our Home Energy Surveyor will advise on this during their home visit.
Yes, sometimes we can install cavity wall insulation completely free of charge, depending on the funding that is available at the time, your circumstances and your property type.
* Estimates taken from the Energy Saving Trust, August 2023 (www.energysavingtrust.org.uk)
