One roofer recommended removing the composite roofing tiles and replacing the old underlayment with 90 pound paper.
How to replace roofing felt under tiles.
15 pounds per hundred square feet and 30 pounds per hundred square feet.
At a verge lay the roofing underlay approximately halfway over the outer wall skin or the outer rafter on an overhanging verge.
To replace the old felt all the tiles would have to come off and all the battens would have to come of if they are 1970s then would probably be better replacing them for the old felt to be removed.
The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.
To replace a small section of roofing felt involves stripping the tiles from the roof and replacing felt between two joists.
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What is tile roof underlayment.
This will cost around 460 510 made up of.
Bring the felt from the other side of the roof over the top of the felt from the first side and nail it through the top of the rafters on the first side.
For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.
Due to the costs homeowners generally opt to replace the roof tiles at the same time.
Prices can range from 2 300 through to around 7 300 for a full roof depending on several factors as explained in this article.
Where wind driven rain is working under the roof and causing leaks then the felt will need to be replaced.
The cost of replacing roof felt under tiles in a domestic property starts from around 200 or so if you re looking to just repair a small patch.
Another roofer recommended the same approach but with two layers of 30 pound felt as the underlayment.
Holes in roofing felt are quite common here we repair a hole in some roofing felt that is underneath the tiled roof.
Then they will replace the roofing tiles.
Keep reading to learn more about tile roof underlayment what it is and why you should use it for your roof.