Commercial & Flat Roof Replacement in Dayton, OH
A commercial roof is due for replacement when repairs stop holding, the insulation underneath is wet, or the membrane has simply reached the end of its life. Replacement is also the one chance to fix what the old roof got wrong. If water ponds in the same corners every spring, the answer is tapered insulation or added drains, not a new membrane laid over the same flat spots. We start with core cuts or a moisture survey to find out what is under the membrane, then lay out the options in writing: tear-off or recover, which membrane suits the building, the insulation needed to meet current energy code, and what the warranty actually covers. A lot of Miami Valley buildings, from 1960s strip plazas and older brick commercial blocks downtown to the warehouses along I-75 and I-70, are on their second or third roof, so we check the deck and the number of existing layers before anyone quotes a recover.
What's included
- Core cuts and a moisture survey before the quote
- TPO, EPDM, PVC and modified bitumen systems
- Full tear-off, or a recover where the existing roof qualifies
- Tapered insulation and crickets to eliminate ponding
- Deck inspection and replacement of rusted or rotted sections
- New parapet flashings, edge metal and coping
- Drains, scuppers and overflow drainage brought up to standard
- Rooftop unit curbs and penetrations flashed in
- Manufacturer warranty options explained in writing
Sound like your roof?
Not sure what is wrong or what it should cost? If any of these sound familiar, tell us about the roof. We'll tell you what it probably is, then confirm it on the roof and give you a written price before any work starts.
- Leaks in several places, not one
- Wet insulation found under the membrane
- Shrinking membrane pulling at the edges and corners
- Large areas of blistering, cracking or exposed felts
- The roof is past 20 years old and repair bills keep growing
Leaking right now? Protect the inside first
Move inventory, files and electronics away from the drip, shut off power to any light fixture or panel that is getting wet, and put down buckets or plastic. Keep people out from under a ceiling that is sagging with water above it. Don't send staff onto the roof during a storm, in the dark, or when it is icy. Low-slope roofs have skylights, open edges and slick membranes. Then request service: an active leak can usually be dried in temporarily until a permanent repair is possible.
From the first call to a dry roof
Tell Us About the Roof
The building, the roof type if you know it, and what is happening: an active leak, a stain, ponding water, storm damage, or a roof that is just getting old. Active leaks go to the front of the line.
Roof Assessment
We walk the roof, trace the problem, check the drains and flashings, and take core samples or moisture readings where the insulation might be wet.
Written Options and Price
You get a written scope and price. When more than one approach makes sense, repair, coating and replacement are laid out side by side with what each one buys you.
Work Done and Documented
The work is done to the manufacturer's specification, and you get a photo report and any warranty paperwork for your files.
You may also need
Commercial Roof Repair
Leak tracing and repair on every common low-slope system — TPO, EPDM, PVC, modified bitumen, built-up and metal — with photos of what failed and a written price before work starts.
Learn moreFlat Roof Repair
Repairs for the flat and low-slope roofs on Dayton homes and small buildings — porch roofs, additions, garages, row houses and storefronts — in rubber (EPDM), TPO, modified bitumen and roll roofing.
Learn moreRoof Coatings & Restoration
Silicone and acrylic coating systems that add years to an aging but dry roof, on single-ply, modified bitumen and metal, for a fraction of the cost of replacement when the roof qualifies.
Learn moreRoof Replacement — FAQs
Most single-ply replacements in the Dayton area fall roughly between $6 and $13 per square foot, depending on the membrane, the insulation needed, tear-off versus recover, and how many penetrations and edges the roof has. A 20,000 sq ft warehouse roof is a very different job from a 3,000 sq ft storefront. See the cost guide.
Not always. If the existing roof is a single layer, the insulation is dry and the deck is sound, a recover over it can be allowed and saves the cost of tear-off. If the roof is wet or already has two layers, it has to come off. See recover vs. replacement.
TPO for reflective, heat-welded seams at a good price; EPDM for proven durability and freeze-thaw tolerance; PVC for restaurants and roofs exposed to grease or chemicals; modified bitumen for heavy foot traffic and small buildings. We explain the trade-offs for your building in writing. Comparison in TPO vs. EPDM vs. PVC.
Usually. Commercial re-roofing is done in sections, with each section dried in at the end of the day. Noise, rooftop unit disconnects and crane days are scheduled with you ahead of time.
Small buildings can take a few days. Larger roofs take one to several weeks depending on size, weather and tear-off. Material lead times and permits come first, so plan ahead of the season if you can.