GreenFasten™ GF2

COMPOSITION SHINGLE ROOFING  The GreenFasten™ GF2 bracket system is designed to be installed on most new or existing (retrofit) composition shingle roofs for solar panel applications, and is accepted by most major roofing material manufacturers without voiding warranties. The GreenFasten™ GF2 system features two patented attachment point watertight seals, compatible with a variety of bracket options.