Our Services
Full-service roofing contractor in Diamond Bar — from asphalt shingle roof replacement and emergency hail damage repair to metal roofing, flat roof systems, and gutter installation. Every project is installed by manufacturer-certified crews with workmanship warranties.
Trusted by homeowners and businesses across Diamond Bar.
Fully licensed, bonded, and insured in California. We carry $2M in general liability. Workers' comp on every crew member. Your property is protected if anything goes sideways.
GAF Master Elite, Owens Corning Preferred, CertainTeed SELECT ShingleMaster. We carry certifications from the big three. That means factory-trained crews and the best available warranties.
We get on the roof, take photos, and give you an honest assessment. If you don't need work, we'll tell you. No charge, no obligation, no high-pressure sales pitch.
We run magnetic nail sweeps three times. Once during tear-off, once after install, once before we leave. Tarps on the ground, dump trailer in the driveway. Your yard looks the same when we're done.
Simple Process
Our inspector walks the roof looking at shingle condition, flashing integrity, vent function, and signs of moisture underneath. 30-45 minutes for most Diamond Bar homes.
You get a written proposal with material specs, labor breakdown, timeline, and total cost. The number on the quote is the number you pay. No change orders, no hidden fees.
Our crews average 8 years of experience each. They tear off the old roof, inspect the decking, replace any damaged boards, and install your new system from the deck up.
We register your GAF, Owens Corning, or CertainTeed warranty directly with the manufacturer so it's active from day one. Your workmanship warranty from us starts the same day.
Verified Reviews
"We were quoted $18,500 for a 32-square replacement with Timberline HDZ. They hit the number exactly. No change orders, no surprise fees. That's rare in this business."
"Used Diamond Bar Roofing & Maintenance for a leak repair over our bathroom. Turned out to be a cracked pipe boot — $425 fix. Honest guys, could have told me I needed a new roof but they didn't."
"They replaced our gutters along with the roof. Seamless aluminum, everything matches. No more overflow when it rains hard. Wish I'd done this years ago."
Service Areas
Serving Diamond Bar and neighboring areas for 23+ years. We know the building codes and weather patterns here. It matters when you're choosing a roofer.
Meet the Owner
Owner & Lead Contractor
Troy has been serving Diamond Bar for over 23 years, building a reputation on honest work, fair pricing, and crews that treat every home like their own. What started as a one-truck operation has grown into a full-service Roofing company — but the values haven't changed.
"We don't cut corners. Every job gets the same attention to detail whether it's a small repair or a complete replacement. That's how you earn 378+ five-star reviews."
