EPDM Rubber Roofing › Cardiff
EPDM is a single-ply synthetic rubber membrane. It is bonded to a sound deck with adhesive and laid in one sheet where the roof size allows, which means far fewer joints than a felt roof has. Fewer joints mean fewer places for water to find a way in.
In Cardiff it suits the small and medium flat roofs we see most often: rear extensions on terraces, garages, porches and the flat roofs of dormers, where the area is small but the detail is fiddly. The sheet is only as good as the deck and the falls beneath it, so those get checked first, and we tell you what we find before laying any rubber.
Call 07766 547309 about epdm rubber roofing in Cardiff, or message us on WhatsApp.
EPDM on Cardiff flat roofs
Rear extensions on the Victorian and Edwardian terraces of Canton, Roath and Cathays are very often flat, with a small footprint and several awkward edges where they meet the main house. EPDM wraps neatly into those corners, and the upstands at the wall are done carefully, so the line against the brickwork stays neat.
On 1930s semis around Heath, Llanishen and Whitchurch the flat roofs are often over garages or side extensions. Many have lasted long enough that the old felt has cracked or ponded, so we look at the deck underneath before we decide whether to strip or overlay, since covering a wet or rotten deck only hides the problem.
Cardiff rain is frequent and the city sits close to the coast, so standing water and poor drainage show up quickly on a flat roof. We check the falls and the outlets before laying the membrane, since ponding water is a deck problem rather than a membrane problem, and a new sheet will not cure it.
EPDM work we carry out in Cardiff
- New EPDM roof on a rear extension — We lay the membrane over a sound, well-fallen deck, with edge trims and upstands formed neatly where the extension meets the house wall.
- Garage roof replacement — Garage roofs are usually simple shapes, so the sheet can often go down in one piece with clean edge trims and a good drainage detail.
- Porch and canopy flat roofs — Small roofs have many corners for their size, and we form each one carefully so the membrane stays sealed and tidy.
- Dormer flat roofs — Dormer flats are small and exposed, so we pay close attention to the cheeks, the abutments and the way the membrane meets the main slope.
- Replacing failed felt — Where felt has split or ponded, we strip it back to the deck, repair the boards and relay the roof as a bonded rubber membrane.
- Repairs to sound EPDM — If the membrane is basically sound, a patch or a cure can fix a puncture or a lifted seam without relaying the whole roof.
How we approach EPDM roofing in Cardiff
We start with the deck, the falls and the insulation, because a good membrane on a poor base will not hold up. On Cardiff terraces we also look at how the roof meets the house wall and neighbouring extensions, since that junction is where most flat roofs fail.
Access to a rear extension often means going through the house or along a shared passage, so we plan the route and protect floors. We explain how we work in plain words, as set out in our Flat Roofing South Wales section: what is staying, what is coming off and what the roof will look like when finished.
EPDM Rubber Roofing Guides for Cardiff
EPDM Rubber Roofing in Cardiff — Common Questions
Is EPDM suitable for a Cardiff garage roof?
Yes, garage roofs are one of the best fits. They are usually a simple shape, so the membrane can be laid in one sheet with neat edge trims. We check the deck and the drainage before laying anything on it.
Can EPDM go over my old felt roof?
Sometimes, but only if the felt and deck are sound and dry. Often it is better to strip back to the boards, repair them and start clean. We look at the roof and tell you which route is right.
Why does EPDM have fewer joints than felt?
It comes in large sheets, so a typical Cardiff extension roof can be covered in a single piece rather than several overlapping strips. Fewer joints means fewer seams that can open up in wind, frost or standing water.
Do you repair EPDM or only replace it?
We repair it where the membrane is sound. A puncture or a lifted seam can be patched or cured. If the deck underneath has failed or water is ponding, a patch will not last, and we explain that honestly.
What about drainage on a flat roof?
It matters a great deal. The roof needs falls that move water to the outlet, and the gutters need to run clear. We check this first, because standing water on a flat roof usually points to a deck or fall problem.
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Contact T&T Roofing in Cardiff
We cover Cardiff and the area around it including Roath, Cathays, Canton, Llandaff, Whitchurch.
Tell us what the roof is doing in Cardiff and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.