Diagonal Roofing & Maintenance has replaced 402+ roofs across Diagonal and Milton, Oto, Rodney, Superior, West Union. Every replacement starts with a full tear-off and decking inspection. We find the damage the old roof was hiding, fix it, and build a new system designed for IA weather conditions.
Our Diagonal replacement crews install GAF, Owens Corning, and CertainTeed shingles. We carry manufacturer certifications from all three, meaning factory-trained installers and access to the best warranty programs available. We help you choose based on budget, color, and warranty goals.
Our Roof Replacement Process
Initial Assessment
Before we quote anything, we inspect everything. A 30-45 minute walkthrough of your entire roofing system. If you only need a repair, we tell you. If replacement makes more sense, we explain why.
Your Detailed Proposal
Our estimator builds your proposal same-day in most cases. Multiple material options at different price points: GAF, Owens Corning, CertainTeed, with warranty comparisons for each. No pressure, no expiration tricks.
Installation Day
No subcontractors. Diagonal Roofing & Maintenance crews, Diagonal Roofing & Maintenance equipment, Diagonal Roofing & Maintenance supervision. A project manager checks in throughout the day and does a quality inspection before cleanup begins.
Final Walkthrough
Our project manager inspects the finished roof against the manufacturer checklist. You get a written workmanship warranty from Diagonal Roofing & Maintenance plus the manufacturer warranty registered directly with GAF, Owens Corning, or CertainTeed.
What Diagonal 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."
"From the first phone call to the final walkthrough, everything was seamless. The team was courteous and efficient. Already recommended them to two friends."
Why Choose Diagonal Roofing & Maintenance for Roof Replacement?
Full System Install
Ice and water shield, synthetic underlayment, drip edge, starter strip, ridge vent, every layer installed to spec. Your roof is only as good as what's underneath the shingles.
Written Warranty
Manufacturer warranty on materials plus our own workmanship warranty in writing. If our install fails, we fix it at no charge. Period.
Financing Available
12-month same-as-cash and low-interest options. A new roof is a big investment. We make it manageable without cutting corners on materials.
19+ Years in Diagonal
We've been replacing roofs in Diagonal for 19 years. That experience means we know the local codes, weather patterns, and materials that hold up here.