Cavity wall insulation
Keep more warmth in.Feel the difference.
Make your home more comfortable with cavity wall insulation suited to your property. Start with a survey, understand your options and explore any funding that may be available.
Clear advice on your property, installation and next steps.
- Home assessment
- Expert installation
- Support from our team
Award-winning home energy expertise.Practical advice from your first enquiry to aftercare.
Reduce heat loss
Help keep more of the warmth you generate inside your living space.
Use energy more effectively
Improve your home’s thermal performance and reduce heating demand.
Feel more comfortable
A considered upgrade to the fabric of your home.
A simple idea. A lasting improvement.
Better insulation.
Less heat escaping.
Cavity walls have an inner and outer layer with a gap between them. Adding suitable insulation to that gap helps reduce heat escaping through the walls.
For a suitable home, specialist equipment introduces insulation through small access holes in the outside wall. The holes are made good after installation. Our team will explain the proposed system and finish before work begins.
See what we check →
Find your starting point
Different walls.
The right next step.
Not sure what is inside your walls? Tell us about your home and we’ll help you find the right starting point.
Concerned about existing cavity insulation?
Explore our extraction service and speak to the team about an assessment.
The details make the difference
A proper assessment.
A considered installation.
The survey comes first. Wall construction, exposure and condition all matter when deciding whether cavity insulation is appropriate.
Open a topic to see what we’ll look at.
Talk about my home →Wall construction
We establish the wall type, cavity and any existing insulation before recommending a system.
Condition and moisture
Existing damp, damaged masonry or water ingress need assessment and any necessary repairs before installation.
Weather exposure
Exposure to wind-driven rain and flooding can affect suitability. The survey considers the property and its surroundings.
Ventilation and access
Intentional vents must remain effective. We also plan safe access to the outside walls.
Explore help with the cost
Funding may be available.
Let’s check your options.
Some households may qualify for support with insulation. What is available depends on the scheme, where you live and the needs of your property.
We’ll discuss current routes and explain what must be confirmed before any work goes ahead.
Ask about funding →What helps us advise you?
Your property
Your postcode, tenure, existing insulation and energy performance.
Your circumstances
Household eligibility requirements vary between schemes.
Current availability
Local delivery, funding and the suitability of the proposed work must be confirmed.
A grant is not guaranteed. Any contribution will be explained before you decide.
Explore Warm Homes: Local Grant in England ↗
People you can put your trust in
Your home.
Our attention to detail.
We’ll help you understand the proposed work and what to expect from your insulation upgrade.
A suitability assessment before a recommendation.
Preparation, installation and any funding conditions discussed upfront.
Help with your questions before and after installation.
Accredited, recognised and trusted
From first question to a warmer home
Your insulation upgrade,
in four clear steps.
Tell us about your home
Share your postcode, wall details and what you want to improve.
Survey your walls
We assess the property and explain the proposed insulation system.
Agree the work
Understand the installation scope, any funding and the preparation required.
Install and hand over
Our team completes the agreed work and explains any ongoing considerations.
A few things you might be wondering
Your cavity wall insulation
questions, answered.
Need advice about your own property?
Ask our team →Is my home suitable for cavity wall insulation?
A survey is needed before a recommendation. Tell us what you know about the building and any previous insulation work so we can advise on the next step.
What if my walls are solid?
Solid walls need a different insulation approach. If you are unsure what type you have, ask our team rather than choosing a system from the age or appearance of the house alone.
What if I already have cavity insulation?
Let us know about any previous installation and concerns. We’ll discuss an assessment; adding more insulation or removing it should not be assumed to be the right solution.
Can you help with cavity wall insulation extraction?
Yes. Explore our cavity wall insulation extraction service or contact the team to discuss your property and the reason you are considering removal.
How much could I save?
Savings vary with your home, existing insulation, heating use and tariff. We’ll discuss the expected benefits for your property without promising one fixed saving for every household.
Can I get funding for the work?
Support depends on the scheme, your circumstances, location and property. We can discuss current options and explain what needs confirming, including any contribution, before you decide.
How long will installation take?
Timing depends on the property, access and agreed scope. We’ll explain the anticipated duration and preparation when planning your installation.
What happens after installation?
We explain the completed work and provide the relevant handover information. Ask us to confirm the guarantee, its terms and who to contact for support as part of your proposal.
Can landlords and tenants enquire?
Yes. Tell us whether you own or rent the property. Landlord permission and any scheme-specific requirements must be confirmed before work can proceed.
Make your next step a warmer home.
Talk to our team about cavity wall insulation.