11 Best Of How To Seal Felt Roof Best Resolution Image. So how long can you expect a bitumen coating repair to last on a flat roof. This is usually done by applying a single layer of thick polyester felt onto a clean grit and dirt free roof with a very large blowlamp.
Cut a piece of new felt to use as a patch big enough to give above a 50mm 2 inch overlap beyond the repaired blister. The type of coating you choose for your roof will depend on your roofs existing condition and the kind of coating already on your roof. Mar 28 2011 Step by step guide on how to apply bituminous roofing felt to your shed roof.
You can expect a bitumen based roofing sealant to cover 1 metre per litre per coat.
Well this really depends on your flat roof. Press down the top layer into the adhesive. The flat roof in my video was 12m took two coats and used nearly the whole 25 litre drum. Not everyone will be comfortable with using a blowtorch.