Roof Underlayment For Asphalt Shingles

Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed.

Roof underlayment for asphalt shingles.

Despite its wide range of compatibility it still does offer a bit more whenever you re dealing with asphalt shingles. An underlayment should be used beneath asphalt shingles especially on roofs with a slope less than 8 12. For starters the textured underlayment isn t just weatherproof. See fema publication 55 coastal construction manual for guidance concerning underlayment for other types of roofs.

The use of underlayment is typically a requirement for class a fire resistance. It can also be used on sloped roofs. Seal the self adhering sheet to the deck penetrations with roof tape or asphalt roof cement. The gator skin synthetic roof underlayment has very positive customer ratings and seems to be one of the most reliable you can purchase.

Asphalt felt aka building paper has been the go to substrate for roof shingles for more than a century and it s still quite popular because of how well it works and how affordable it is. Installing an underlayment helps to minimize picture framing i e. 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. This makes it a highly versatile underlayment that you can use under roof coverings that are mechanically attached for example roofs with cedar tile slate and asphalt shingles.

But nowadays you might be more likely to see synthetic underlayments on roofing projects because of their durability ease of installation and slip. The visible outline of deck panels caused by irregularities in roof decking thickness.