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BeforeAfter
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Our Services
What we do
Warmer walls. Lower bills. A stunning rendered finish that transforms how your home looks. We've been doing this for families across Coventry, Nuneaton and the Midlands since 1985.
External Wall
Insulation
Our signature service for solid-wall and hard-to-heat homes. It reduces heat loss, tackles condensation, and transforms the outside of the property at the same time.
Cavity Wall
Insulation
A fast, cost-effective solution for suitable cavity-wall properties. Ideal when you want a practical thermal upgrade without changing the appearance of the house.
Loft
Insulation
Often the quickest win for energy savings. A straightforward way to stop heat escaping through the roof and improve comfort throughout the home.
The problem we solve
Cold walls. Condensation. Higher energy bills.
Rooms that never seem to feel properly warm.
These are often signs that your home is losing heat where it should not. In older properties, the right answer may be external wall insulation. In cavity-wall homes, or where most of the heat is escaping through the loft, another improvement may be the better option.
Before spending money, it is worth making sure you are solving the right problem. That is why Rockwarm looks carefully at where the heat is escaping and helps you choose the improvement that makes the most sense for your home.
Compare your insulation options
Compare the options, then book a survey if you would like help choosing the best next step for your home.
The result
A warmer, more comfortable home that costs less to run.
Warmer walls
Rooms feel warmer and more comfortable, without that cold-touch feeling.
Lower energy bills
Keeping heat in for longer can help reduce the energy needed to warm your home.
A smarter finish outside
External wall insulation can also give older brickwork a cleaner, more refreshed appearance.
External Wall Insulation
See the difference our render makes.
Recent before-and-after projects from Rockwarm installations across the Midlands.
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BeforeAfter
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Reviews
Trusted by homeowners
across the Midlands
Genuine feedback from Rockwarm customers.
Read all reviewsReviews
Trusted by homeowners
across the Midlands
Genuine feedback from Rockwarm customers.
Read all reviews“Best thing I have ever done”
We have recently moved into a 1920s property and with an older property it came with cracked brickwork leading to cold drafts into the house causing condensation running down the windows. Best thing I have ever done!!!
Y
Verified Customer
Yell
“My house looks like a new build”
My house looks like a new build. I have so many compliments from people walking past. We decided to only have the top half done to keep the character of the house and it looks fantastic. Very happy.
Y
Verified Customer
Yell
“From start to finish, totally professional”
From start to finish this company have been totally professional. The crews that were on site turned up when they said they would and were very polite, clean and tidy. Just waiting now for the scaffold to come down so that I can admire all their hard work. Would recommend them to anyone.
Y
Verified Customer
Yell
“The walls are no longer stone cold”
In regards to insulation you will be happy to hear the walls are not stone cold on the inside anymore and they actually feel warm. We don't have to keep heaters on all night during cold months anymore.
T
Verified Customer
Trustpilot
“Rockwarm”
The team from all the office staff to the workers were all excellent. Tracy and Sarah were excellent at all times, kept us informed at all times regarding what works will be carried out on what day. all work was carried out to a high standard. site was clean and tidy after each days work, the job looked great when completed. I would highly recommend to anyone.
A
AhmedP-31
Yell
“Excellent Service from Start to Finish”
I recently had External Wall Insulation installed by Rockwarm Insulation Ltd, and I couldn’t be happier with the whole experience. From the very first enquiry with Charlotte and Jonathan, their communication was outstanding — clear, prompt, and genuinely helpful. Every step was explained in a way that made the process completely hassle-free - thanks to Sara, Tracy, Andy and the crew members. The team on site were professional, friendly, and incredibly efficient. They worked with real attention to detail and kept everything tidy throughout. It’s easy to see why Rockwarm has such a strong reputation locally for first-class service. The end result looks fantastic and has already made a noticeable difference to the comfort of my home. I highly recommend Rockwarm.
G
GeorgeO-152
Yell
Helpful advice
Practical energy saving information
Helpful posts, articles, and guides on energy saving solutions including insulation, K Rend finishes, condensation, and choosing the right improvement for your home.
Tuesday, January 21, 2025
K Render Installation Guide: Everything UK Homeowners Need to Know
Complete guide to K Render installation. What it is, how much it costs, colour options, and whether it's right for your home. From installers with 40 years experience.
Rockwarm Team
Tuesday, January 7, 2025
External Wall Insulation Costs 2025: What UK Homeowners Actually Pay
Realistic external wall insulation costs for 2025. What affects the price, typical ranges by property type, and how to avoid overpaying. From installers with 40 years experience.
Rockwarm Team
Tuesday, July 16, 2024
Is External Wall Insulation Worth It? An Honest Assessment
External wall insulation costs thousands. Is it actually worth it? We break down the real costs, savings, and benefits - honestly, including when it might NOT be worth it.
Rockwarm Team
Get started
Ready for a warmer, more comfortable home?
Book your free survey. No obligation, no pressure — just an honest assessment of the best insulation approach for your home, along with clear advice and a fixed-price quote where appropriate.