Home Street is a Certified GAF/ELK Weather Stopper® Roofing Contractor. We offer the GAF smart choice system plus warranty free of charge with every install. The GAF weather stopper integrated roofing system is trusted by more professional contractors throughout North America than any other.

Founded in 1886, GAF Materials Corporation has grown to be one of the largest building products companies in North America—as well as the largest commercial and residential roofing manufacturer (approaching $2 billion in sales).

http://www.gaf.com/General/GAFintro_MAIN.asp

"The VSI Certified Installer Program is coordinated by a third-party administrator, Architectural Testing, Inc., which registers participants, reviews tests, trains trainers, verifies company quality control programs, and maintains the registry of Certified Installers, Trainers, and Installer Companies." www.vinylsiding.org/vsicert/programs/

Tyvek (R) is an exterior weather resistive barrier (WRB) and flashing system installed before applying exterior siding and components. WRB's, seam tape and flashing systems are in integral part of keeping out water intrusion and allowing the wall to breath properly, and are regularly required by state building code. Requirements for certification are classroom training and five actual installed jobs signed off by a Tyvek ® certification professional. With every installation, the homeowner receives a 10-year material/labor warranty from Dupont™ for the certified install.

See our listing at www2.dupont.com/Tyvek_Weatherization/en_US/where_to_buy/certified_installer_locator.html#MN