H.F.S.M.
HIDDEN-FASTENER SOLAR MOUNT

HFSM is America’s premier rooftop solar attachment for America’s most common roof type: shingles.

Designed by roofing experts and solar installers, the seamless design ensures a reliable, leak-free installation for life. The single-piece unit installs beneath the shingle courses, anchoring at the existing nail strip without creating exposed penetrations. By preserving the roof’s integrity, HFSM protects solar investment, delivers long-lasting performance, and provides peace of mind.