Deck-Armor™ Premium Breathable Roof Deck Protection Protect Your home With Premium "Breathable" Roof Deck Protection Premium Roof Deck Protection should protect your home and “breathe” at the same time (amazingly, most so-called premium products do NOT breathe!) It provides a critical extra layer of protection between your shingles and your roof deck — to help prevent wind-driven rain (or water from other sources) from infiltrating under your shingles and causing damage to your roof structure or to the inside of your home. In addition, a premium quality roof deck protection will: “Breathe”... To allow moisture from inside your attic to escape (to help prevent structural decay, mold, and mildew) Provide longer-lasting leak protection... Than conventional “felts” (which can rot or become brittle before your shingles reach their useful life) Lay flatter... So your shingles will lay flat and uniform