Underlayment For Shingles On A Roof

For many years felt paper served as the leading type of shingle underlayment.

Underlayment for shingles on a roof.

Working your way up and across begin laying your courses. The modern roof system consists of multiple components and the first one to go down on the decking that supports your roof is shingle underlayment. Together these parts of your roofing system provide weatherproofing to prevent moisture from entering your home. Roofing underlayment provides your roof with an extra layer of protection that shingles alone can t match.

What is shingle underlayment. Roofing underlayment is what lies between the shingles and the roof sheathing or roof deck which is typically either plywood or osb. Underlayment flashings and shingles all work together and must be installed in the correct order. Ideally the roof covering material would be installed as soon as possible but in reality the roof may be protected by only the underlayment for days weeks or sometimes months.

For starters the textured underlayment isn t just weatherproof. It s installed directly on the roof deck and provides a secondary layer of protection from the elements including rain snow and wind. Despite its wide range of compatibility it still does offer a bit more whenever you re dealing with asphalt shingles. Your shingles serve their own purpose.

Underlayment installed directly on top of the roof decking and underneath the shingles underlayment provides an additional watertight layer of protection for the decking and interior areas. If you re looking for the best roof underlayment for asphalt shingles then the tyvek protec 120 should be on your wishlist. Shingles reflect the sun s rays withstand wind and block precipitation. They re the first line of defense.

The purpose of the shingle underlayment is to provide an additional moisture resistant layer to back up your roof shingles. Be mindful of the proper nailing technique so that your nails always hold the top edge of the course beneath it. But shingles overlap and aren t sealed at all corners. Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed.