What is the perm rating of asphalt shingles?

0.65
Test results verified that installing shingles in a traditional pattern alone results in the ultimate vapor barrier with a perm rating of 0.65. With a perm rate of less than 1.0, the installed shingles are the final nonbreathable layer within the roofing system.

Which is better Tiger Paw vs deck armor?

Tiger Paw™ is the best choice (in our opinion) for vented, asphalt shingle roofs (low-perm rating of less than 1 perm); whereas Deck-Armor™ is able to “breathe” (16 perms), which is perhaps good for conditioned, non-vented attic spaces. Low-permeability means an added layer of protection against rain and leaks.

What is the perm rating of Tyvek?

56 US Perms
Tyvek® HomeWrap® is not surfactant resistant. Tyvek® HomeWrap® has a perm rating of 56 US Perms, much higher than the recommended perm rating.

Is Owens Corning synthetic underlayment breathable?

Designed to be used underneath asphalt shingles, Owens Corning ProArmor® deservedly outperforms traditional roof barriers. They call it ‘total protection’, and for a good reason. ProArmor® is a top-performance synthetic option that encompasses advanced sealing, defensive, and breathable properties.

Is GAF FeltBuster breathable?

FeltBuster® – This is a non-asphaltic polypropylene roofing underlayment that resists tearing and will not become brittle or absorb moisture. Like the rest of GAF’s roof deck protection products, it also lies flatter than typical felts. Deck-Armor™ – This is a breathable, UV-stabilized polypropylene underlayment.

Is GAF FeltBuster waterproof?

FeltBuster® Synthetic Roofing Felt is water resistant, it is NOT WATERPROOF. DO NOT USE Feltbuster® Synthetic Roofing Felt as a temporary roof to protect property or possessions.

How long is a roll of titanium?

Technical Data