This video shows detailed drawings on how a warm flat roof is constructed. I link to two other videos, one on cold flat roof construction and one that’s an in depth comparison between cold and warm flat roofs, also showing thermal imaging of poorly performing, insulated flat roofs.
There are numerous benefits and advantages of using solar reflective paint on your flat roof. Here are the top 3 reasons we think you should consider using a solar reflective paint on your flat roof.
Constructing a warm roof on a new extension with parapet walls, I will have surplus amounts of insulation left over and am considering adding this insulation to the underside between the joists to double up the insulation, would this install have any negatives?
Unless Europe has some miracle EPDM I don’t know about after 4 decades as a journeyman roofer; the walls, roof and chimney flashing will all fail within a decade. The rubber will shrink and pull off the walls, a product that Firestone, Versico aka Goodyear and Carlisle EPDM roofs mandate at walls is called RUSS strip and you didn’t install it.
As discussed on the phone, we are looking to have our flat roof (extension at the back of the house) insulated and the roof covering replaced, as we’ve had a leak into our son’s bedroom below – probably where the drain enters the roof. A builder said the roof covering should be below the black bit around the bottom of the drain, not above.
As a company, we don’t use a naked flame on a roof, so we don’t use felt. No flames no fires. If we did I we still wouldn’t use mineral felt, felt only comes 1m wide, so you end up with lots of joints, joint means possible leakage at some time. We use EPDM rubber, its good and comes in large sheets, fewer joints fewer problems down the line.