Garages are one of the most common places EPDM gets used, and for good reason. Their roofs tend to be small, simple and rectangular, which happens to be exactly the shape EPDM handles best.
Why the Shape and Scale Suit EPDM So Well
Most detached and integral garages in Bristol, whether they're sitting behind a Victorian terrace or attached to a 1930s semi, have flat or low-pitch roofs small enough to be covered with a single sheet of rubber membrane, with no seams at all. That's a real advantage because seams are usually where flat roofs eventually let water through, so removing them from the equation altogether makes a garage roof considerably more reliable long term.
Practical Points Before Fitting
The existing deck still needs to be sound, dry and free of rot before the membrane goes on, and any old felt or asphalt is normally stripped back first rather than covered over. It's also worth thinking about insulation while the roof is being redone, since garages often get used as workshops, gyms or extra storage, and a bit of insulation underneath the EPDM can make a real difference to comfort without adding much to the job. Brunel Roofing Bristol regularly fits garage roofs this way and can advise on trims, drip edges and any guttering that needs attention at the same time.
Getting the Falls and Drainage Right
Garage roofs are often nearly flat, sometimes with barely any pitch at all, so getting the falls right during installation matters more than people expect. A slight slope toward a gutter or outlet, built in with tapered insulation or firrings under the deck where needed, stops water sitting on the surface after rain, which over years can encourage moss growth even though EPDM itself copes with standing water far better than felt ever did.
Where a garage is attached to the house, such as an integral garage under a hip or catslide roof, the EPDM also needs to tie in neatly with the main roof covering and adjoining brickwork, so the detailing at that junction matters just as much as the flat area itself. This is usually handled with trims and upstands rather than anything elaborate, but it needs doing properly to avoid a weak point right where the two roofs meet.
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