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Rated 5 out of 5 stars

From beginning to end all the different teams were very professional, punctual and polite. We were kept well informed during the whole process. The quality of the work was first class. The house now l... See more

Rated 5 out of 5 stars

We have had a five star positive experience with Rockwarm all around. They have done such a beautiful and professional job with the external insulation on our home. Apart from their beautiful workma... See more

Rated 5 out of 5 stars

I had a very positive experience with Rockwarm and the external wall insulation installation. The team was reliable, hardworking, and kept me informed throughout the whole process. They completed... See more

Rated 5 out of 5 stars

Rockwarm professional/punctual From the enquiry/quote/various trades i.e. plumbers/electrician/the application process they were all polite/professional/punctual/tidy. Kept myself informed along t... See more

Company details

  1. Insulation Contractor

Written by the company

We are a family run business based in Nuneaton, Warwickshire - with over 40+ years of successful trade in the Insulation sector (Est 1983). We install External Wall Insulation and render on old / solid wall houses and also install cavity wall and loft insulation too. We pride ourselves on delivering a first class installation with excellent customer care.


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

66 reviews

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Rated 5 out of 5 stars

Professional and friendly team

From beginning to end all the different teams were very professional, punctual and polite. We were kept well informed during the whole process. The quality of the work was first class. The house now looks amazing and retains heat meaning no need for the heating to be on as much as before so less money on heating bills. A huge 5 star thankyou to the whole team.

April 20, 2026
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Rated 5 out of 5 stars

We have had a five star positive…

We have had a five star positive experience with Rockwarm all around. They have done such a beautiful and professional job with the external insulation on our home. Apart from their beautiful workmanship and the way that they have transformed the look of our home, also and in our opinion more importantly the way our house now holds either the heat from the heating system or the cool overnight temperature. Making our whole home a much warmer habitat on colder days and a cooler one on warmer days. Also all of their staff have been nothing but perfect. We are very grateful to Rockwarm. Thank you so much.

April 30, 2026
Unprompted review
Rated 5 out of 5 stars

Great EWI Job

I had a very positive experience with Rockwarm and the external wall insulation installation.
The team was reliable, hardworking, and kept me informed throughout the whole process. They completed the work to a high standard, left everything tidy, and were courteous at all times.

The house feels warmer for longer now, and it looks amazing after the work was completed.

I’m very happy with the final result and would gladly recommend Rockwarm to others.

March 6, 2026
Unprompted review
Rated 5 out of 5 stars

Really appreciative of the staff at…

Really appreciative of the staff at Rockwarm. I was in a pickle, trying to find the right insulation for a wall cavity. I was struggling to find anyone to do the job. Luckily, a builder suggested Rockwarm, and they were willing to do the job despite it being probably smaller than most of their work! The staff in the office were very quick to reply to emails throughout, from initial query to final payment. The staff who came to fill the cavity were friendly and professional, and cracked on with the job right away. Thank you so much, Rockwarm. I really appreciate that you did this job, and managed to squeeze us in a bit earlier whilst you were in the area. We were on a time limit, and the whole problem was stressing me out until we found you. Thank you!

February 20, 2026
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Rated 5 out of 5 stars

7 months down the line and now seeing…

7 months down the line and now seeing the great benefits! Before we had the install we found some of the areas of the house were moldy, but no more even with the bad weather recently. We have also found it a lot warm and bills are significantly lower.

The installers are lovely and did a great job. We are so happy with the end result. Thank you!

June 1, 2025
Unprompted review
Rated 5 out of 5 stars

Rockwarm professional/punctual

Rockwarm professional/punctual
From the enquiry/quote/various trades i.e. plumbers/electrician/the application process they were all polite/professional/punctual/tidy. Kept myself informed along the way. I would highly recommend. The best bit, 12 months on my house looks great but is warm. Using little heating and stays warm for longer. I found that in the summer the house was cooler too which was bliss :)

January 6, 2025
Unprompted review
Rated 5 out of 5 stars

A review of the product and performance of Rockwarm Insulation works.

Rockwarm has given excellent customer service from an experienced estimator right through to the final post-works site survey.
They provided a detailed programme of works, which they kept to, and their operatives were very careful and tidy during the construction process.
The finished product is clean, smart, and in our opinion, makes the house very presentable.
There was very little disruption to our use of the house during the works, and the current incumbent reports that it is noticeably more comfortable inside.

October 29, 2025
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Rated 5 out of 5 stars

Excellent experience with ROCKWARM

We recently engaged Rockwarm to carry out external insulation on our property and are extremely pleased with both the standard of work and the overall service provided. The project was well organised, completed within the agreed timeframe, and the quality of the finish has noticeably improved the comfort of our home.

All of the employees we dealt with were very nice, professional, and genuinely helpful throughout the process. They were polite on site, took the time to answer any questions, and made sure everything was left clean and tidy at the end of each day.

Based on our experience, we would have no hesitation in recommending Rockwarm to anyone considering external wall insulation.

December 18, 2025
Unprompted review
Rated 5 out of 5 stars

Very professional company

From the initial visit we were impressed by the professionalism of this company. They weren’t the cheapest but were more knowledgeable and friendly. We knew straight away that we would go with them.
The work was completed to an excellent standard by very hardworking crew. The office staff were so friendly and helpful and a pleasure to deal with.

June 30, 2025
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Rated 5 out of 5 stars

happy customer

from start to finish the company and the workforce were great. they were always on time, kept us informed and were always there if we had any problems. would recommend them

February 1, 2025
Unprompted review
Rated 5 out of 5 stars

First class company

A very professional family run business. All of their staff, office, sales staff and fitters cannot be more helpful and careful. They fitted an upgrade to the cladding on our village hall and were a delight to deal with.

June 7, 2025
Unprompted review
Rated 5 out of 5 stars

Excellent service

Brilliant company who guarantee a personalised service. So helpful. Every detail explained. The only firm I have ever encountered who do snagging visits at the end to ensure that the finish is superb and that the customer is completely satisfied. I cannot recommend them more highly.

December 18, 2025
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Rated 5 out of 5 stars

First class service

Excellent communication from the first quote to the final signing off
All the workers we encountered were very professional and polite
Did a first class job and cleared up after the work was completed

March 8, 2025
Unprompted review
Rated 5 out of 5 stars

Great job

The whole experience was great from start to finish. Communication throughout was exceptional. The guys who carried out the EWI were polite, considerate and kept my property clean and tidy. I cannot recommend this company enough.

December 18, 2024
Unprompted review
Rated 5 out of 5 stars

Couldn’t be more pleased

We had external wall insulation installed by Rockwarm. The service we had was excellent from start to finish. Couldn’t be more pleased with the results 9 months on. By far the best company for EWI installation.

March 30, 2025
Unprompted review

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