Grand Marais Roofing & Maintenance has been installing asphalt shingle roofs across Grand Marais for 17 years. GAF Timberline HDZ, Owens Corning Duration, CertainTeed Landmark — we carry the top shingle lines and we're certified by the manufacturers to install them.
Architectural shingles are heavier and more wind-resistant than three-tab because of their laminated, multi-layer construction. The fiberglass mat provides the structural base, asphalt makes it waterproof, and the granulated ceramic surface protects against UV radiation and provides fire resistance. We install them over synthetic underlayment with ice-and-water shield at valleys and eaves.
Our Shingle Roofing Process
Free Roof Estimate
Our estimator examines your current roofline, checks the condition of the underlayment and flashing, and presents shingle options with honest pricing. GAF, Owens Corning, CertainTeed — you pick.
Strip & Inspect
Full tear-off to the deck. Old shingles, deteriorated felt, and corroded flashing removed and hauled to the dumpster. Deck inspection catches hidden damage — rotted sheathing, water-stained OSB, nail pops — before it's buried under new shingles.
Ice Shield & Drip Edge
Ice-and-water shield bonded at valleys and eave lines. Synthetic underlayment over the full deck. New aluminum drip edge at every eave and rake. All flashing — chimney, pipe, vent, wall — sealed and secured before a single shingle goes down.
Shingle Courses
Asphalt shingles laid from eave to ridge with precise offset between courses. Every shingle fastened in the manufacturer's nailing zone — too high or too low voids the warranty. Ridge cap and hip shingles complete the system with ridge vents for balanced attic ventilation.
What Grand Marais Customers Say
"After getting several quotes, these guys stood out with their honesty and knowledge. No pressure, just straightforward advice and excellent workmanship."
"From the first phone call to the final walkthrough, everything was seamless. The team was courteous and efficient. Already recommended them to two friends."
"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 Grand Marais Roofing & Maintenance for Shingle Roofing?
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.
Proper Flashing at Every Penetration
Chimney flashing, step flashing, pipe boots, vent boots, valley channels — every transition sealed with waterproof sealant and proper overlap. Flashing failures cause 90% of roof leaks.
Manufacturer-Certified Installers
GAF Master Elite, Owens Corning Preferred, CertainTeed SELECT ShingleMaster. Our certifications mean your manufacturer warranty is fully valid from day one.
Full Tear-Off Standard
We strip to the deck on every shingle job. No overlay shortcuts. Your underlayment, ice-and-water shield, and flashing are installed on a clean, inspected roof deck.