Purpose Of Roofing Felt Under Tiles

About 30 years ago a roofing contractor that i was working for told me that the purpose for the tar paper under the roofing shingles was to protect the roof shingles.

Purpose of roofing felt under tiles.

Fifteen pound or heavier felt underlayment is required by code in some areas. 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. There are three main types of roofing underlayment.

Prices can range from 2 300 through to around 7 300 for a full roof depending on several factors as explained in this article. As stated in best practices guide to residential construction. What is the purpose of felt under roof tiles. 15 pounds per hundred square feet and 30 pounds per hundred square feet.

Is felt really that important and what is roofing felt anyway. The main purpose of roofing underlay is to reduce the effect of wind loading on the slate or tile roof covering according to bs5534 the code of practice for slating and tiling. Roofing felt is usually required under roof tiles to prevent the desk from being exposed it also may be applied as your roof. He said that the roofing felt was the first line of defense against the nails that work there way loose that fasten the roof sheathig to the roof rafters.

The secondary purpose of sarking felt is to provide a waterproof barrier and allow for the safe disposal of water that has collected on the upper surface of the. The 15 pound was for lighter weight projects while the 30 offered more heavy duty protection. It is applied under all other roofing materials as an added layer of protection from severe weather. Roofing underlayment is a water resistant or waterproof barrier material that is installed directly onto your roof deck.

The roof deck should be sound and level before laying the underlayment. Roofing felt is definitely not a long term solution for these kinds of problems. Is roofing felt underlayment needed under roof shingles tiles slate wood shingles or shakes.