Leave at least an extra four feet of tarp on each end to cover the roof damage. Secure the tarp with 2 x 4 boards. You can staple or nail the tarp to the boards, but be sure to use nails that are not so long that they will go through your roof.Jun 13, 2017
When felting over any old felt you can use a bitten primer to get a proper fix, some felts are also a 3 layer system allowing them to go over old felt, however if he has quoted for old felt to be removed then that is what he should have done. Any old felt roof needs to be completely taken up and re boarded.
Roofing felt can get wet and still maintain its integrity, as long as it is not exposed to the elements for more than a few days. It will break down in sunlight and with large amounts of ongoing moisture. ... If the felt is still wet, it may rip when shingles are installed.