About Rockwarm
Family-run. Midlands-based. Transforming homes since 1985.
40 years of keeping Midlands homes warm.
Rockwarm started in 1985 with a simple belief: homes with proper insulation are warmer, more comfortable, and cheaper to run. Four decades later, that is still what drives us.
We have grown from a small local operation into one of the Midlands' most trusted insulation specialists, working on everything from Victorian terraces in Coventry to 1930s semis in Nuneaton and post-war homes across Birmingham and beyond.
What has not changed is our approach: quality work, honest advice, and treating every customer’s home like it matters. Because it does.
The numbers
- Years in business
- 0+
- Homes insulated
- 0+
- Typical install
- 2–3
- Review rating
- 5★
What we do
Insulation work designed around real homes.
We are external wall insulation specialists, helping homeowners improve warmth, energy performance, and kerb appeal with properly specified systems and practical advice.
External Wall Insulation
Our signature service. Rockwool insulation finished with premium K Rend silicone render for older Midlands homes.
Cavity Wall Insulation
A practical option for suitable properties that need cavity walls filling or topping up properly.
Loft Insulation
Often the quickest win for energy savings, comfort, and day-to-day efficiency.
We do not focus on grants, schemes, or government programmes. We focus on private installations where we can control the quality, use the materials we believe in, and look after customers properly.
Why we're different
Built on trust, not pressure.
We use better materials
We use Rockwool insulation and K Rend silicone render because they perform properly on the kinds of homes we work on.
We don't do grants
We focus on private installations so we can control the quality, avoid unnecessary delays, and give customers a fairer, clearer route to getting the job done.
We're not salespeople
No pressure, no hard close, and no “today only” tactics. We explain the options, answer your questions, and let you decide in your own time.
We do our own work
The people on site work for Rockwarm. We do not hand your job off to unknown subcontractors.
We're actually local
Based in Nuneaton, we serve Coventry, Birmingham, Warwickshire, and the wider Midlands as a genuine local business.
Certifications & partnerships
The standards behind the work.
Customers trust us because the work is backed by recognised standards, proven systems, and years of experience delivering for homeowners and organisations across the Midlands.
TrustMark Registered
Government-endorsed quality assurance for home improvement work, giving customers added confidence and protection.
BBA-Approved Systems
The insulation systems we use are independently tested and approved for performance and suitability.
Energy Provider Partnerships
We are trusted for private-work programmes by major energy providers and organisations across the region.
Housing Association Experience
We have experience working with housing associations and local authorities across the Midlands.
The people behind Rockwarm
A local team that sees the job through properly.
Our team includes experienced surveyors, customer liaison staff who keep you informed throughout the project, and skilled installers who take pride in the standard of the finish.
When you call Rockwarm, you speak to real people who know the business and care about getting things right. When our team arrives at your property, they are our employees, not subcontractors.
Experienced surveyors
Every project starts with a proper visit and an honest assessment of what is right for the property.
Customer liaison support
Our office team keeps customers informed throughout the job so nothing feels unclear or left hanging.
Directly employed installers
The people doing the work are part of Rockwarm and take pride in the finish they leave behind.
How we work
Survey first
Every property is different, so we start with a proper survey rather than guessing from photos or a quick phone call.
Honest assessment
If external wall insulation is not the right answer for your home, we will tell you plainly.
Clear communication
You know what is happening, who is arriving, and where the project stands throughout the process.
Quality materials
We specify Rockwool insulation and K Rend silicone render because they suit the homes we work on and the standards we want to maintain.
Proper aftercare
We are still here after the work is complete, and our guarantees mean something because we stand behind the job.
Visit us
Talk to a real local team.
Rockwarm Insulation Ltd
Trident Business Park
4 Holman Way
Nuneaton
CV11 4PN
Opening hours
Monday – Thursday: 9am – 4pm
Friday: 9am – 1pm
Get in touch
Phone: 024 7634 5554
Email: info@rockwarm.co.uk
Ready to talk?
Whether you are ready to arrange a survey or you simply want honest answers about your home, we are happy to help.