How Long Does Roofing Felt Last Under Tiles

For many years roofers used asphalt saturated felt under roofing shingles and it was historically available in two standard weights.

How long does roofing felt last under tiles.

Felt underlayment generally wears down much faster than the tile above it requiring repair or replacement about once every 20 to 30 years that is still a long time but not as long as 50 years. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. What can affect the duration of roof underlayment. How long roofing felt lasts underneath your tiles will depend on the type used.

The general estimated lifespan of an underlayed roof is normally around 25 years. This underlayment is far superior to a 30 pound felt and is warranted by the manufacturer for up to 20 years if installed by a tile roofing institute certified contractor. You can expect traditional roofing felt to last for about 30 years although this will depend on the conditions it s exposed to. In the course of the water leaking through my roof onto the ceiling of a room i have been told that the roof felt underneath the concrete roof tiles is obviously the original felt ie 1970s and has gone brittle and awful with age and will need replacing entirely.

Proper maintenance can make your tile roof last longer than most relationships but there could be trouble just beneath the surface. Last but not least foot traffic can easily break tiles and a professional roofer is recommended should you need any type of assistance that involves direct contact with the roof tiles. The felt roof underlay is secured by nailing direct to the rafters and then held by the battens which will be fitted to secure the tiles or slates too. 15 pounds per hundred square feet and 30 pounds per hundred square feet.

The reason why 30 underlayment is inferior to g40 is because 30 is made of only organic materials. Other modern alternatives tend to be more durable although they re usually more expensive. That s the headline quote but as we ll soon see this can vary a lot depending on a number of factors. As the sarking felt can be easily damaged by strong winds it is advisable to wait for a period of time where the felt and battens can be fitted in quick succession during fair conditions.

While the tile can last for decades the felt underlayment often wears out sooner 20 40 years and must be replaced to maintain your roof system.