Protecting Your Assets By Installing A Complete Roofing System
To give that some perspective Washington State only requires a 1 year workmanship guarantee. While some contractors choose to offer above the state requirements they are not obligated to. That is why Mear's Roofing is your best choice for a Tacoma Roofing contractor, we protect what matters most to you with the best manufacturer backed warranty available in the Nation today!
Manufactures actually require a smooth and solid substrate as the foundation of the roofing system and there are many reasons for that! Read on below to learn the key reasons!
The most important and simple reason is that most manufacturers require ship lap to be covered in order to provide a warranty. There is a tremendous amount of testing and national standards that have to be met called "ASTM" ratings in order to get a product into the market and offer tangible warranties. All of this testing is completed on sold roof decks, not on older roof decks.
When ASTM testing takes place on an asphalt shingle it must pass a "wind uplift" test. The shingle must withstand wind gusts of up to 110 MPH which is now the standard for asphalt shingles. The roof deck is the mot critical aspect of the wind warranty. On older homes where ship lap or skip sheathing was used the condition of the wood often becomes brittle and has lost alot of it's structural integrity due to expansion, contraction and moisture. The coil nails used to install the asphalt shingle needs to have a sold structure to penetrate into in order to withstand windy conditions. Installing a new rood into old brittle ship lap will more than likely result in "blow off" as the wind will rip single shingles or large sections of the roof right out of the compromised roof deck.
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