Grinnell Roofing Contractor

We don't do shortcuts on replacements. Tear off the old roof, check the decking for soft spots, install synthetic underlayment, drip edge, starter strip, shingles, ridge vent. The whole system. Your roof is only as good as the layers underneath.

Not every problem needs a full replacement. Sometimes it's a blown-off shingle, a cracked pipe boot, or deteriorated valley flashing. We diagnose the actual issue and fix that. We don't upsell you into a new roof you don't need.

Wind speeds over 60 mph cause shingle tab lift and seal failure. Hail over 1" diameter causes fractures through the shingle mat to the fiberglass reinforcement. Our HAAG-trained inspectors know the difference between cosmetic damage and functional damage. That distinction determines your insurance payout.

New construction roof installation following IRC Section R905 and local Grinnell building code amendments. We calculate ventilation per IRC R806 (1:150 ratio reduced to 1:300 when 50% is within 3ft of ridge. Synthetic underlayment per ASTM D226, ice barrier per ASTM D1970 at eaves in freeze-thaw climate zones. Manufacturer-certified installation locks in the full system warranty.

Standing seam metal lasts 40-60 years with practically zero maintenance. Higher upfront cost than shingles, but you'll never replace it again. Our Grinnell metal crews do residential and commercial.

Owens Corning Duration STORM shingles with triple-layer SureNail reinforcement strip. Rated to 130 mph wind per ASTM D7158. Algae-resistant granules prevent black streaking in humid Iowa climates. We install Duration in the full Owens Corning system for Preferred Protection or Platinum Protection warranty coverage. CertainTeed Landmark PRO with NailTrak technology is our alternative pick for Grinnell homeowners who want the max warranty tier.

We repair and install flat roofs on Grinnell homes, garages, commercial buildings, and additions. TPO for reflectivity, EPDM for budget, PVC for chemical resistance near restaurants and kitchens.

Our Grinnell commercial crews handle everything from small retail strip centers to 50,000 sq ft warehouses. TPO, EPDM, modified bitumen, metal. We're certified installers for all major commercial membrane systems.

Clogged gutters cause fascia rot. We see it on every other house in Grinnell. We install new gutters with proper pitch, adequate downspout capacity, and optional gutter guards if you're done cleaning them twice a year.

Annual roof inspections catch small problems before they become expensive ones. A cracked pipe boot is a $150 fix. Ignoring it means $3,000 in ceiling and wall water damage. We recommend an inspection every 2-3 years for roofs under 10 years old, and annually after that.

After we tarp and secure your roof, we document everything for insurance purposes. Photos, measurements, damage descriptions. Your adjuster gets a professional report, not a handwritten note.

VELUX FS fixed skylights and VS vented skylights installed with EDL flashing kits for profile roofing. The flashing integrates with your shingle courses per IRC R903.2 weather protection requirements. We cut the opening, frame the curb with doubled 2x lumber, install the skylight with factory sealant, and weave the flashing into the existing shingle field. Leak-proof when done right. And we do it right in Grinnell.