Four reasons asphalt saturated felt roof underlayment fails.
Roof felt broken.
Holes in roofing felt are quite common here we repair a hole in some roofing felt that is underneath the tiled roof.
However given the nature of flat roof repair costs it can sometimes make sense to replace the entire roof.
Force the mold away from the roofing a few inches at a time then lift off the entire piece in one section.
Basic felt solutions cost around 50 per square metre for the material itself and more high end materials such as modern grp a form of fibreglass going up to 90 per square metre.
Where wind driven rain is working under the roof and causing leaks then the felt will need to be replaced.
A poor quality asphalt saturated felt roof underlayment is at high risk of failure.
However there are problems with asphalt saturated felt underlayment that can cause it to fail.
Asphalt saturated felt roof underlayments will fail if torn or damaged during installation.
Hold onto the old shingle mold if it looks to be in good shape.
This will cost around 460 510 made up of.
Phil demonstrates what can happen when roofing felt has gone rotten and what needs to be done to fix it.