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).
Get cavity wall insulation today!
Cavity wall insulation is a simple yet highly effective way to improve your home’s energy efficiency. Whether you’re a homeowner looking to reduce energy bills or a landlord aiming to meet legal requirements, cavity wall insulation offers numerous benefits.
The advantages are clear, from reducing heat loss to enhancing indoor comfort and contributing to environmental conservation. Ready to make your home more energy-efficient? Book a free home visit with Evolve HES today and start enjoying the benefits of cavity wall insulation. Our team is here to guide you every step of the way, ensuring a smooth and hassle-free process.
We aim to get back to you by the next working day
What is cavity wall insulation?
Cavity wall insulation is used to fill the gap between two brickwork layers that make up many homes’ external walls. If left uninsulated, this gap, or cavity, can be a significant source of heat loss. By filling this space with insulating material, homeowners can significantly reduce the heat that escapes through their walls. This leads to lower energy costs and a more comfortable living environment.
How does cavity wall insulation work?
Insulating cavity walls involves injecting an insulating material into the cavity. This is typically done by drilling small holes into the external wall of the property. The insulation material, often foam or beads, is injected into the cavity. Once the cavity is filled, the holes are sealed, ensuring the insulation remains effective.
Learn about the steps our team takes to install a cavity wall:
Assessment:
• A professional assessor examines your walls to determine whether they suit cavity wall insulation.
• They check for any existing insulation and assess the condition of the cavity.
Preparation:
• Small holes are drilled into the external walls at regular intervals.
• These holes provide access points for the insulation material.
Injection:
• The chosen insulation material is injected into the cavity through the drilled holes.
• This process ensures an even distribution of the material within the wall cavity.
Sealing:
• Once the cavity is filled, the holes are sealed with cement or a matching material to restore the appearance of the wall.
• The entire process is usually completed within a few hours for an average-sized home.
What are the benefits of cavity wall insulation?
Cavity wall insulation is an effective way to improve your home’s energy efficiency and reduce heating costs. Filling the gap between the exterior and interior walls with insulating material helps to prevent heat loss and maintain a consistent indoor temperature. This leads to a more comfortable living environment and reduces energy bills and carbon footprint. Explore the key benefits of cavity wall insulation and how it can be a valuable investment for your property:
Energy Efficiency:
Reduces Heat Loss:
- Around 33% of a home’s heat is lost through uninsulated cavity walls.
- Insulating your walls can prevent this heat loss, making your home more energy-efficient.
Lower Energy Bills:
- Homeowners can save approximately £300 per year on energy bills for a gas-heated, semi-detached home.
- For a gas-heated detached home, savings can rise to £520 per year.
Improved Comfort:
Stable Indoor Temperatures:
- Insulation helps maintain a consistent and comfortable indoor temperature.
- This reduces the need for excessive heating or cooling.
Enhanced Well-being:
- A well-insulated home is more comfortable to live in.
- Improved thermal comfort can have positive effects on health and well-being.
Environmental Benefits:
Reduced Carbon Footprint:
- Insulating your cavity walls can save up to 1100kg of CO2 per year.
- This contributes to reducing your overall carbon footprint.
Sustainable Living:
- Energy efficiency is a critical component of sustainable living.
- By reducing energy consumption, you are contributing to environmental conservation.
WATCH: our handy video guide
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)
