Shingle roofing is the backbone of residential roofing in Grannis. Whether you're choosing architectural shingles for their dimensional look or three-tab shingles for budget-friendly coverage, the installation process is what determines how long they last. Grannis Roofing & Maintenance follows manufacturer nailing specs and overlap requirements on every job.
The difference between a 15-year roof and a 30-year roof isn't the shingle — it's the installation. Proper nail placement in the manufacturer's nailing zone, correct overlap between courses, ice-and-water shield at all vulnerable areas, and flashing that's sealed at every transition. Grannis Roofing & Maintenance follows the exact specs that keep the manufacturer warranty valid.
Our Shingle Roofing Process
Free Roof Estimate
We inspect your existing roof deck and sheathing, measure the area, and help you choose between architectural and three-tab asphalt shingles. Color samples brought to your Grannis home.
Strip & Inspect
We strip the old shingles, underlayment, and damaged flashing down to the roof deck. Every square foot of OSB or plywood sheathing inspected for rot, water damage, and soft spots. Compromised decking replaced before new materials go down.
Ice Shield & Drip Edge
Synthetic underlayment across the full roof deck. Ice-and-water shield in valleys, along eaves, and around chimney flashing, pipe boots, and vent boots. New drip edge installed at every eave and rake. Step flashing and counter-flashing at all wall transitions.
Shingle Courses
Starter strips along the eave, then field courses of architectural shingles with manufacturer-specified offset and overlap. Each shingle nailed in the designated zone with 4-6 fasteners. Ridge cap shingles hand-nailed at every hip and ridge for a finished, watertight top.
What Grannis Customers Say
"We called expecting to wait days, but they were here the same afternoon. Fair pricing, quality work, and they kept us informed every step of the way."
"Responded fast and got the job done right the first time. Crew was polite, professional, and cleaned up everything. Would absolutely hire again."
"Best experience we've ever had with a home service company. On time, on budget, and the results exceeded what we expected. Truly top-notch."
Why Choose Grannis Roofing & Maintenance for Shingle Roofing?
30+ Color Options
Architectural shingles in weathered wood, charcoal, onyx black, estate gray, desert tan, and 25+ more. We bring samples to your Grannis home so you can match your siding and trim.
Manufacturer-Certified Installers
GAF Master Elite, Owens Corning Preferred, CertainTeed SELECT ShingleMaster. Our certifications mean your manufacturer warranty is fully valid from day one.
Nailed to Manufacturer Spec
Every shingle nailed in the designated nailing zone with the correct number of fasteners. This is what keeps the manufacturer warranty valid and the shingles on your roof in high wind.
Ice-and-Water Shield Standard
Every shingle roof includes ice-and-water shield at valleys, eaves, and around penetrations. This self-adhering membrane is the last line of defense against water intrusion if a shingle fails.