Is cavity wall insulation insulation right for my house?
Cavity wall insulation is a great choice for most homes in York, built after the 1920s. It’s ideal if you want to save money on your energy bills. If your house has a gap between the inside and outside walls, cavity wall insulation can fill them.
Homes built before 1920 might benefit from internal or external insulation instead. Our advisors can help you decide which is best for your home during a free home assessment.
The cost to install Cavity wall insulation can vary and is based on a few factors:
The size of your home.
The materials used.
The condition of your existing walls.
Plastic beads are often cheaper, costing £14 to £20 per square metre. Spray foam is a little more expensive at £22 to £26 per square metre. A government grant could help you cover this cost.
Here’s the average cost of cavity wall insulation for homes in York:
Type of home | Average cost |
One-bedroom flat | £1,000 |
Two-bedroom terraced | £1,500 |
Three-bedroom semi-detached | £2,700 |
Detached bungalow | £2,100 |
Four-bedroom detached home | £4,600 |
(Based on April 2024 prices).
Average installation time:
1 day
How does cavity wall insulation work?
It adds an extra layer of insulation to the walls of your home, keeping it warm in winter and cool in summer. This means you will use less energy and save money on your utility bills.
Approximate cost saving:
How much you save will depend on the size of your home and your energy prices.
Here’s an idea of how much you could save with cavity wall insulation:
Type of home | Average savings per year |
One-bedroom flat | £100 |
Two-bedroom terraced | £130 |
Three-bedroom semi-detached | £210 |
Detached bungalow | £160 |
Four-bedroom detached home | £370 |
(Energy Saving Trust, based on July 2024 fuel prices).
Energy efficiency:
Cavity wall insulation is a great way to make your home more energy-efficient. A three-bedroom semi-detached home could save 650 kg of CO2 per year. That’s the same as running 200 hot baths!
(Energy Saving Trust. 2024 fuel prices).
FAQ's - Cavity Wall Insulation
Would you like a more comfortable home and lower energy bills? Our friendly advisers can help you get started with cavity wall insulation. This handy insulation fills the gaps inside your walls. This helps to keep your home warm in winter and cool in summer.
A three-bedroom semi-detached home could save £210 per year thanks to cavity wall insulation. If you live in York, you may be eligible for a government grant to help you pay for it. Our advisers can help you find the best cavity wall insulation for your home. They can also connect you with accredited suppliers to get it installed.
(Energy Saving Trust. based on insulating a gas-heated home, 2024 fuel prices).
Cavity wall insulation for your home
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Cavity wall insulation explained
Save on your energy bills.
Lower your carbon footprint.
Get a government grant to help cover the cost
How does cavity wall insulation work?
Think of cavity wall insulation as an extra layer for your home. It fills the gaps between your walls. These are also known as cavities and they’re usually filled with air.
These gaps can be filled with insulation to make your home warmer in winter. This also helps to keep the heat out in summer, so you can enjoy a more comfortable home all year round. It’s a simple and effective way to make your home better.
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What does cavity wall insulation look like and where does it fit in your house?
Cavity wall insulation is usually made from a material or tiny beads.
You don't need extra room inside your home for cavity wall insulation because it fits between your walls. Small holes are made in the outside wall and the insulation is blown in to fill the space. The holes are then filled, so you won't even notice them.
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More information
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My home is now a much more sustainable, quieter, comfortable space where I can relax without worrying about my energy costs.
Debbie, city centre
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How can I make installing cavity wall insulation more cost-efficient?
Cavity wall insulation is a great way to save money. It works even better when paired with other energy-efficient solutions.
Case Studies
Our case studies are real-life scenarios of York residents who have recently installed energy-efficient solutions in their homes. They have since become our Community Energy Champions, and you will be able to connect with them if you decide to use YorEnergy on your own journey towards energy efficiency!
