Roof Underlayment For Asphalt Shingles

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.

Roof underlayment for asphalt shingles.

Seal the self adhering sheet to the deck penetrations with roof tape or asphalt roof cement. Despite its wide range of compatibility it still does offer a bit more whenever you re dealing with asphalt shingles. The underlayment options illustrated here are for asphalt shingle roofs. But nowadays you might be more likely to see synthetic underlayments on roofing projects because of their durability ease of installation and slip.

An underlayment should be used beneath asphalt shingles especially on roofs with a slope less than 8 12. The use of underlayment is typically a requirement for class a fire resistance. The gator skin synthetic roof underlayment has very positive customer ratings and seems to be one of the most reliable you can purchase. If you re looking for the best roof underlayment for asphalt shingles then the tyvek protec 120 should be on your wishlist.

The visible outline of deck panels caused by irregularities in roof decking thickness. It can also be used on sloped roofs. This product is compatible with asphalt shingles residential metal and cedar shake roofing in place of 15 and 30 organic felt it also exceeds performance requirements of astm d4869 and atsm d226. 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.

See fema publication 55 coastal construction manual for guidance concerning underlayment for other types of roofs. For starters the textured underlayment isn t just weatherproof.