Why Is Roofing Felt Necessary

This article series discusses roofing felt specifically addressing the roofing code or roofing manufacturer s requirements for use of an underlayment such as roofing felt tarpaper or other underlayment products beneath asphalt shingles and other.

Why is roofing felt necessary.

Roofing felt is a layer of tar paper installed beneath the shingles to provide a backup waterproof membrane in case of leakage. Felt details for various roof slopes amp. There are two torched on layers with the top layer being a green mineral felt which i must say does look very smart. It provides a smooth unbroken surface for the application of shingles.

Asphalt saturated felt was the go to roofing underlayment until about 15 years ago. These synthetic membranes can have a much higher performance than the felt variety in severe weather conditions or can be matched to work better with specific roofing materials. That s when synthetic products started gaining in popularity. There is also another form of underlayment on the market that is particularly important in the toronto region where ice snow and severe rainstorms are common.

Commonly referred to as felt paper or tar paper common roofing felt is made of varying blends of cellulose natural plant fibers polyester bitumen or asphalt. When most people think of roofs they typically think of shingles or metal roofing. Felt is asphalt infused synthetic or wood composite paper that repels water. While roofers workers are up fixing the shingles to the roof the roofing felt creates a safer layer for them to work on helping to make it less likely that they could slip.

Our roofer has told us that we don t require chippings on our new flat roof due to the quality of the felt he has used. The reason why drip edge should be installed below the underlayment along the eaves of the roof is so that water does not get under the drip edge. Is roofing felt required. Roofing felt is necessary on a shed as it not only protects the interior from water damage but also extends the life of your shingles.

When installing anything on a roof you need to follow the water rule the water rule means you consider where water will run when it s on the roof. While people are debating on whether roofing felt otherwise known are tar paper is still necessary here are a few reasons why it is still useful. Roofing underlayment roofing felt requirements. But what some may not know is there s another layer of protection directly on top of the roof deck and under the roof covering that performs a critical role in protecting your home from moisture damage.

Are flat roof chippings always necessary.