Warm roof
Best for: Most replacements, and any room you want warmer.
Insulation boards go above the deck, under the rubber, which keeps the structure warm and cuts the risk of condensation.
- Insulated
- Yes
- Deck
- Checked and replaced if needed
- 4.9 on Google
- 4.7 on Trustpilot
- 9.87/10 on Checkatrade
- 20+ years’ experience
- Free survey
- 40-mile radius
Is it time?
Does your flat roof need replacing?
Felt roofs typically last 10 to 15 years before they start to let water in. These are the usual signs.
Leaks where it joins the house
Water often gets in at the edges and joins first, then shows up on a ceiling inside.
Cracks and blisters
Felt that has cracked, blistered or lifted has come to the end of its life.
Puddles that stay
Water sitting on the roof for days wears it out, and may mean the deck has dipped.
A soft or springy deck
If the boards underneath have got wet, they’ll need replacing along with the covering.
Your options
Two ways we fit an EPDM roof
Both use Firestone EPDM rubber. The survey tells us which suits your roof.
Overlay
Best for: A sound deck and structure, where a full strip isn’t needed.
The EPDM goes over the existing covering, which is quicker and less disruptive.
- Insulated
- No
- Deck
- Must be sound
What you get
What’s included in a new flat roof?
We check what’s underneath, because a new covering over a wet deck won’t last.
- A free survey of the roof and the structure underneath
- Failed covering stripped back where needed
- Joists and decking repaired or replaced where needed
- New OSB deck, taped at the joints
- Insulation boards on a warm roof
- Firestone EPDM rubber, bonded and trimmed
- Drains, outlets and edges sealed
- The site cleared and swept
Ask what’s under the old roof
Laying a new covering over a wet or rotten deck hides the problem. An overlay only works on a sound roof, and we’ll check before recommending one.
Four steps, no surprises
How is a new flat roof fitted?
No call centre and no pushy sales visit. Just this.
- 01
Survey and strip
We assess the structure, strip back any failed covering, and repair or replace joists and decking where needed.
- 02
Deck and insulation
New OSB decking goes down. On a warm roof, insulation boards are fitted above it.
- 03
EPDM membrane
The rubber is laid, bonded and trimmed, with drains and outlets fully sealed.
- 04
Checked before you pay
We leave the site clean and check you’re happy before you pay.
Our guarantee
EPDM flat roofs: workmanship and materials covered*
Once the job’s finished, you can’t see what’s underneath. So what’s covered is set out in your quote, before you decide anything.
- New roofs: 10-year workmanship guarantee
- Tiled roof repairs: 12-month guarantee
- EPDM flat roofs: workmanship and materials covered
- £1m public liability insurance
More of our work
More flat roofs: before & after
A few more jobs. Drag the handle to compare.
Our work
More flat roofs by our team
Reviews
What our customers say
Our 48 reviews, from Google, Trustpilot & Checkatrade.
4.7 stars · 48 reviews
4.917 reviews on Google
Find us on Google
4.726 reviews on Trustpilot
Read our Trustpilot reviews
Checkatrade9.87/10 from 5 reviews
See us on Checkatrade
Trustpilot
“Excellent service from start to finish. Gareth the sales person explained the process and was not too pushy. The process that was explained was followed by the fitters who were really good and friendly, we could not fault them.”
Trustpilot
“The surveyor who came to measure up and quote wasn’t in the least pressurising and gave me confidence in the company. The installer on the day was efficient but friendly and polite. I am very pleased with the finished product and would not hesitate to recommend this company.”
Trustpilot
“Excellent service. Clear quote, efficient team, high quality work completed quickly despite awful weather. Very impressed!!”
Google
“Really happy with Cozy Top. Great people with excellent workmanship and materials.”
Google
“Very happy with the service, workmen excellent, polite, cleaned up after them. Will recommend them to my friends.”
Google
“Very satisfied with Cozy Top, excellent work, staff would recommend this company to do a good job, would deal with this company again.”
10/10
Checkatrade
“Following a visit by the Director of Cozy Top Home, to discuss the best options for my conservatory roof. I placed the order, the Surveyor visited and he explained in full detail how the work would be carried out. The two fitters turned up at the time advised, and worked non stop, they did an excellent job, and tidied up after them. I am extremely pleased with the service provided, and would recommend them.”
10/10
Checkatrade
“The entire team is brilliant. Gareth came in and provided a free quote, clearly explaining the entire process. David and Mark arrived early in the morning and completed the work within just 4 hours. The work was carried out very professionally and meticulously.”
10/10
Checkatrade
“We started with the Estimator/Sales Gareth who was very helpful, friendly and discussed how the work would be done. The work was carried out with 2 brothers who had a good work ethic, got on with the job with precision and cleanliness. On completion we had a visit from the company work inspector to check we were happy with the work done.”
Written reviews from this platform are on its own page — use the button above to read them.
Where we work
Flat roofing near you
Based in Nottingham, covering homes up to about 40 miles around. Pick your town to see the homes and jobs we see most there.
FAQs
Common flat roof questions
EPDM is a tough synthetic rubber membrane laid as one large sheet, so there are very few joins for water to get through. Unlike felt, it won’t support moss and needs no stone chippings on top. We use it on extensions, garages, dormers and outbuildings across Nottingham.
An EPDM rubber roof lasts far longer than felt, which typically lasts 10 to 15 years. How long yours lasts depends on the deck underneath and the details at the edges, so we check the deck at the survey and talk through the expected life and the guarantee for your roof before you decide.
Yes. Replacing an old felt garage roof with EPDM rubber is one of our most common flat roof jobs. We check the deck first and replace any soft boards, then lay the rubber in one sheet and seal the edges and outlets. Most garage roofs are done in a day or two.
We’ll find where the water is getting in: on flat roofs it’s often the edges, the outlet or where the roof meets the wall. We rarely patch flat roofs, because fixing one spot usually means another goes six months later. Most of the time a new EPDM covering is the fix that lasts, and we’ll show you why at the survey.
Every flat roof is priced after a free survey, because the size, the system, the access and the state of the deck underneath all affect it. You get a fixed price for the whole roof, including any deck repairs we find, so there are no surprises later. There’s no obligation to go ahead.
Reviewed by Anthony Harrison, Co-owner, 20 years in the trade, 13 of them in roofing and insulation. Updated November 2026.
Get the roof sorted, and the heat kept in
Tell us what’s going on with the roof or the conservatory. We’ll come out, look properly and talk you through the options. The survey costs nothing.