Installing Landmark - five course pattern, alternate closed cut valley & skylight flashing
Landmark Installation
This installation video reviews five course application of CertainTeed's Landmark shingle product, as well as alternate closed cut valley and skylight flashing application.
Summer sunshine is beautiful, but intense UV exposure can shorten roof lifespan by degrading shingles, fading colors, weakening adhesives, and accelerating wear. Here’s what to watch out for: