Calvin Roofing & Maintenance | Harwood Roofing Services

"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."

"Had a bad leak around the chimney flashing after a storm. Calvin Roofing & Maintenance came out next day, found the failed step flashing, replaced it, and sealed everything properly. No more dripping. Solid work."

"Their crew showed up at 7 AM, tore off the old roof, replaced eight sheets of plywood, and had new shingles down before dinner. Jobsite was cleaner when they left than when they arrived."

Free Inspections & Honest Estimates

We don't charge for inspections and we don't pad estimates. If your Harwood roof needs a repair, we'll tell you. If it needs a replacement, we'll explain exactly why. No high-pressure sales, no scare tactics.

13+ Years of Experience

We've been installing and repairing roofs for over 13 years. That experience shows in how we handle complex roof lines, unexpected deck damage, and insurance claim disputes. We've seen everything and know how to handle it.

Licensed, Bonded & Insured

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

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 Harwood roof gets factory-level quality control.