Internal Wall Insulation
For sustainable, cosy homes
Do you live in an older home with solid walls that are letting heat escape, making it feel cold and costing you money? Internal wall insulation is the ideal solution for properties that cannot have cavity wall insulation
It involves adding an insulating layer to the inside of your external walls, effectively creating a thermal barrier that keeps the heat inside your home, making it more comfortable and energy-efficient.
Benefits
Part of the heat pump will live outside of your house. This part often looks like a slightly larger air conditioning unit that you might see on buildings when you go abroad. They typically sit on the ground and will often be attached to one of your exterior walls.
Internal wall insulation offers a range of benefits, particularly for homes with solid walls.
Lower Energy Bills: By preventing heat loss through your walls, you'll significantly reduce the energy needed to heat your home, which can save an average of £410 a year.
Improved Comfort: It eliminates cold spots and draughts, ensuring your living spaces are warm and comfortable all year round. It can also help keep your home cooler in the summer.
Positive Environmental Impact: Reducing your energy consumption helps to lower your carbon footprint.
Government Grants Available: You may be eligible for grants to help cover the cost of installation.
No disruption to the exterior: This solution is perfect for properties where external insulation would damage the character or aesthetics of the building.
4 Easy Steps
Free Adviser Call
Free Home Assessment
Quotation and Supplier Selection
Installation and Completion
Speak with an Energy Adviser
If you would like help understanding your options or exploring which energy improvements might suit your home, our expert advisers are here to guide you. They will take the time to learn about your goals and your property so they can offer clear, practical advice that supports your next steps with YorEnergy.
You can use the calendar on the right to book a time that works for you. The next step is simply choosing a slot that fits your schedule, and one of our advisers will be ready to help, whether you need quick guidance or are preparing to begin a home energy project.
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Internal wall insulation explained
Lower your energy bills and save money.
Make your home more comfortable.
Lower your carbon emissions.
What do air source heat pumps look like and where will they fit in your house?
Part of the heat pump will live outside of your house. This part often looks like a slightly larger air conditioning unit that you might see on buildings when you go abroad. They typically sit on the ground and will often be attached to one of your exterior walls.
How It Fits in Your Home
Our advisers will help you answer this question through a detailed survey of your home. Internal wall insulation is typically a great solution for properties with solid external walls, typically those built before the 1920s. The insulation panels are usually between 5cm and 12cm thick, which will slightly reduce the size of your rooms.
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FAQ's - Internal Wall Insulation
Average installation time:
Approximately 3-5 days per room depending on size and other factors
Is internal wall insulation right for my house?
Internal wall insulation is a good choice if you want to make your home warmer and reduce your energy bills. It's ideal for homes in York with solid walls and older homes that may have poorly insulated walls.
It will make your rooms a bit smaller, but only by a few centimetres. It can sometimes cause damp if it’s not installed correctly. Our friendly advisors can help you understand if it's suitable for your home or not. They can also connect you to a trustworthy supplier to help you get it specified and installed correctly.
Approximate cost saving:
Savings depend on how big your home is and your energy costs.
Here’s a breakdown of how much you could save with internal wall insulation:
Type of home | Savings per year |
One-bedroom flat | £140 |
Two-bedroom terraced | £170 |
Detached bungalow | £220 |
Three-bedroom semi-detached | £290 |
Four-bedroom detached | £500 |
(Energy Saving Trust. Based on July 2024 fuel prices).
Energy efficiency:
Internal wall insulation is a great way to make your home more energy-efficient. A semi-detached home could save around 900 kg of CO2 per year. That’s equivalent to boiling the kettle over 22,000 times!
(Energy Saving Trust. Based on insulating a gas-heated home, 2024 fuel prices).
The cost to install Internal 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.
Internal wall insulation costs around £7,500 for a three-bedroom semi-detached home in the UK.
(Based on April 2024 prices).
How does Internal wall insulation work?
Internal wall insulation adds a layer of material to the inside of your walls. This layer helps to protect your home from outside temperatures. This keeps it warmer in winter and cooler in summer. It also helps to reduce outside noise.
After installation, your new walls are covered with plaster and painted to look nice and smooth. This way you can save on energy bills and stay comfortable all year round.
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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
Additional Solutions
Are you looking for the perfect home energy solution, complete with excellent customer support?
YorEnergy’s efficient all in one approach makes it easy to upgrade your home's energy efficiency via multiple solutions including solar panels, doors and windows, and paired solutions for even better benefits.
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!
