All Over Exterior Roofing

Why roof vent system is necessary ?
1-It keeps the attic cool so shingles don’t “bake” from underneath, which would otherwise cause them to dry out, blister, curl, and crack prematurely.
2- It flushes out trapped humidity from inside the home before it can condense on the wooden roof deck, eliminating the risk of wood rot, sagging, and mold.