Save up to £515 per year

Free Cavity Wall Insulation


Since 2003, we’re the UK’s leading home insulation grants provider – trusted by over 500,000 happy customers

Get 100% Free Cavity Wall Insulation

Our cavity wall insulation is like a giant blanket for your home

You’re important to us

That’s why we work hard to make sure that our service is as quick, easy and to the highest standard

Our work is covered by a 25 year Cavity Insulation Guarantee 

Why Keep Warm?

Our installation team are more than just experts

Of course you want someone who is certified to install your insulation. But you also want someone who is friendly, who listens, who answers your questions and who keeps your home neat and tidy. Our expert staff never forget that they are people first and installers second.

Step 1 of 4

Book your free survey now

I'm Interested In

  • Fast free survey
  • Certified national installer
  • Save money on energy bills
  • 14 days completion plan
We never share your information.
Step 2 of 4

Property Details

Step 3 of 4

We may be able to offer additional free grants such as free boiler, free solar if you or anybody in your home are in receipt of one or more of the following benefits:

Step 4 of 4

Please fill in the form and our friendly grant team will call you within 24 hours to book your free survey

Something has gone wrong, please try again later.
Thank You For Your Enquiry
Data Protection Act 1998 Reference: Z283974X

Cavity Wall

Cavity walls typically have full brick lengths visible and have a cavity in between the two walls where insulation can be injected.

If your wall looks like this you may be eligible for a grant

Solid Wall

Solid walls typically have a combinations of bricks ]ends and lengths. There is no space to inject insulation into these walls.

Please note; we do not install external wall insulation.

Wall No v2

If your wall looks like this you will not be eligible for a grant


Apply for your free survey today whilst funding is still available

Complete our 60–second short form or call our friendly UK team 24 hours, 7 days free on 0800 612 7878 and our grant staff will call you back within 24 hours and book your free survey at a convenient time and date.

* Our scheme works on a 'first come first served' basis, whilst funding is available, so we urge you to apply now to avoid disappointment.

This is a government energy efficiency scheme to help reduce carbon emissions and tackle the cost of energy

What our customers say…

“I am writing to thank you for the excellent service you gave me in having my cavity and loft insulation fitted. The work was done with great care and consideration and no mess. As I had written to you previously outlining how apprehensive I was about the work to be done I feel it only fair to say how pleased I am with the result and to congratulate you on your staff.”

D Wood, York

“I was delighted with the service from start to finish and both the people on the phone and the workmen who did the job were polite and helpful at all times. The installation was done quickly and efficiently and I can’t fault the workmanship, everything was cleared away after the work was done too.”

Mrs Solomon, Manchester

“I had to let you know that I am absolutely delighted with the loft and cavity wall insulation your team put in. The whole process was a lot less fuss than I had expected and everyone was very helpful and didn’t mind answering our questions. Very professional all round!”

J Derrick, Birmingham

Step 1 of 4

Book your free survey now

I'm Interested In

  • Fast free survey
  • Certified national installer
  • Save money on energy bills
  • 14 days completion plan
We never share your information.
Step 2 of 4

Property Details

Step 3 of 4

We may be able to offer additional free grants such as free boiler, free solar if you or anybody in your home are in receipt of one or more of the following benefits:

Step 4 of 4

Please fill in the form and our friendly grant team will call you within 24 hours to book your free survey

Something has gone wrong, please try again later.
Thank You For Your Enquiry
Data Protection Act 1998 Reference: Z283974X

4 easy steps to get a warmer home and lower bills

Complete the short 60 second form or call our friendly UK team 24/7 free on 0800 612 7878 and our staff will take your name, address, best number to call and a few property questions

One of our grant staff will then call you back within 24 hours and book your free survey on a convenient date and time

Our qualified assessor will attend, survey your property and advise you of your options

Installation is usually within 14 days. That’s it! – you get a warmer home and lower bills

Call Free On 0800 612 7878

Complete our 30 second short form or call our friendly UK team 24 hours, 7 days a week free on 0800 612 7878 and our grant staff will call you back within 1 hour and book your free survey at a convenient time and date.