Roofing Guides
Find the right guide for your roof
Shingle Offsets: Why the Rows Are Staggered
Learn the difference between sideways offset and exposed shingle height, with a simple diagram and questions for your installation.
Shingle Nailing: Placement, Depth and Holding
Understand why nail placement and depth matter, what the fastening zone means, and which details a roof inspection should explain.
Starter Shingles: The First Course Matters
See how starter material differs from visible field shingles and what to confirm at the eave and rake edges.
Roof Valleys: Following the Water Path
Recognize open and closed valleys, understand why the selected method matters, and know which installation photos to request.
Drip Edge: Finishing the Roof Perimeter
Find the eaves and rakes, see where edge metal belongs, and ask how the roof connects to the fascia and gutters.
Pipe Boots: A Small Detail With a Big Job
Identify plumbing vent flashing, compare collar repair with full replacement, and learn what useful before-and-after photos should show.
Step Flashing: Where the Roof Meets a Wall
Understand the overlapping metal pieces at roof-to-wall joints, the role of kick-out flashing, and what should appear in the scope.
Roof Decking: What Happens Before the Shingles
See what roof decking does, how concealed damage is documented, and what to ask before replacement wood is covered.
GAF System Plus: 50-Year Protection & WindProven
How a qualifying GAF roof system combines 50-year non-prorated protection with 15-year WindProven coverage, plus installation and registration requirements.