It is because you have faulty tiles somewhere on the roof.
Roof felt repair under tiles.
Felt roofing underlayment is typically available in two types.
Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment.
It would be far cheaper to fix the faulty tiles than to re felt the roof.
This will cost around 460 510 made up of.
15 pounds per hundred square feet and 30 pounds per hundred square feet.
Fixing a tiled roof will help fend off any leaks that result from slipped roof tiles.
The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection.
Roofing felt is essential to ensure your outbuilding is ready for all weathers by providing a waterproof cover to the building s roof.
30 felt is typically thicker stronger and may be less prone to tearing or ripping off during installation or weather events.
If your roof is leaking it is not because of faulty under felt.
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 will be included in the overall tiled roof roof repair costs.
No 15 felt and no.
Item 656632 model 0903000.
Of course re felting the roof correctly will involve the removal and replacement of the tiles anyway.
For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.