Diagonal Roofing Contractor | Serving Diagonal From Algona

"They replaced all our gutters along with the roof. Seamless aluminum, properly pitched. Water actually drains into the downspouts now instead of overflowing at every seam. Night and day difference."

"We went with the Owens Corning Duration shingles in Driftwood. The ridge vent and intake ventilation they installed dropped our attic temperature noticeably. Energy bill went down that first summer."

"We got three quotes for a full tear-off and Algona Roofing & Maintenance was the most thorough. They showed us the rotted decking in the photos before replacing it. New Timberline HDZ shingles look great."

Storm Damage Specialists

Hail, wind, and monsoon damage are common in IA. Our team includes HAAG Certified inspectors who document damage the way adjusters expect it. We handle the entire insurance claim process so you don't have to.

Manufacturer-Certified Installation

We hold certifications from GAF, Owens Corning, and CertainTeed. That means the manufacturers have trained and vetted our crews and will back our installations with their strongest warranties. Your Diagonal roof gets factory-level quality control.

Licensed, Bonded & Insured

Algona Roofing & Maintenance carries full liability insurance and workers' compensation for every crew member. We're licensed across IA and pull local permits for all Diagonal projects. Your property and your investment are protected.

No Subcontractors

Every Diagonal roof is installed by our own trained crews, not subcontractors pulled from a labor pool. That means consistent quality, accountability, and a crew that knows our standards from the first nail to the last drip edge.