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Since 1975 · 4.8 stars across 200+ Google reviews · Florida Certified Roofing Contractor CCC1327429 · Lifetime Workmanship Warranty · GAF Master Elite · Owens Corning Platinum Preferred
50 Years- GAF Master Elite®
- Owens Corning Platinum Preferred
- BBB
- Lifetime Workmanship Warranty
Low-slope roofs
Flat roof replacement and drainage
A flat roof replacement is its own kind of job. A pitched roof sheds water. A flat roof holds it and walks it slowly toward a drain, and if the slope is off or a seam opens, the water sits there until it finds a way in. That's why a flat roof can't be built like the rest of the house, and why the flat parts of a home, the Florida room, the addition, the garage tie-in, give out years before the main roof when they were done with the wrong material. You'll see a lot of flat roofs on the plazas and condos along Okeechobee and Congress, and plenty of flat sections on plain family homes. We're Molsbee Roofing, roofing Palm Beach County since 1975. We install TPO, modified bitumen and EPDM on homes, condo buildings, plazas and warehouses, and we price the flat part as its own line instead of burying it in the main roof. Free inspection, price in writing. The phone is answered 24 hours a day at 561-318-8624.
- TPO and modified bitumenflat roof systems
- Lifetimeworkmanship warranty
- CCC1327429Florida licensed
Low-slope roofs
Membranes for low-slope roofs
TPO, modified bitumen and EPDM each fit a different roof. Drainage is part of every choice.
TPO
TPO is a white membrane with seams welded together by hot air. It throws the sun back, so the roof and the rooms under it run cooler. Because the seams are welded and not glued, a good install stays tight at the seam for the life of the membrane. It's the flat system we install most, on commercial roofs and on the bigger flat sections of homes.
Modified bitumen
Modified bitumen is the asphalt sheet, torched or self-adhered, that stands up to foot traffic and rooftop equipment. It's the traditional Florida flat roof and still the right call where the roof gets walked on or carries air handlers. It's also what we reach for on the small flat sections of a house, where a welded membrane is more than the job needs.
EPDM
EPDM is the rubber membrane you see on older flat roofs. It's tough and it flexes, which is why it lasts. It's black, so it runs hotter than TPO under our sun, and it's glued at the seams rather than welded. We install it where it fits, and we'll tell you straight when TPO or modified bitumen would serve you better.
Drainage and slope
Flat roofs fail at the details. Drains that clog, scuppers set too high, seams at a wall, pipe penetrations, and low spots where water ponds. A proper flat re-roof fixes the slope with tapered insulation, resets the drains and flashes every penetration. Those are separate lines on your written price, and the work carries our Lifetime Workmanship Warranty.
Water on a flat roof
Slope, drains and roof openings
- Water needs a path
Drainage and slope are part of the replacement price.
- White membranes
TPO reflects sunlight from the roof surface.
- How the roof gets used
Foot traffic and rooftop equipment help decide the system.
- Walls and penetrations
Every pipe, wall and scupper needs its own flashing detail.
Rebuilding a flat roof
- 1
Free inspection
We check drainage, structure and ponding, and take core samples to see what the current roof is made of.
- 2
Written quote
System recommendation, insulation and drainage options, and a timeline. We handle permits and engineering.
- 3
Install
Slope correction, tapered insulation and membrane laid by our crew. Every penetration flashed and sealed.
- 4
Inspection and close-out
We photograph the finished roof and hand over the warranty paperwork after the county inspection.
Why Molsbee
Our work on low-slope roofs
- Lifetime Workmanship Warranty
Our flat roof work carries the warranty in writing.
- The flat section priced separately
You see the drainage work and membrane in the written scope.
- System chosen for the roof
We explain where TPO, modified bitumen or EPDM fits.
- Family owned since 1975
Homes, condos, plazas and warehouses across Palm Beach County.
Commercial property?
Commercial roofing.
Flat, TPO, tile and metal for plazas, condos and offices. See how we coordinate a commercial roofing job.
Commercial roofing
Service areas
Flat sections and commercial buildings
Flat roof installation, repair and maintenance for commercial and residential properties across Palm Beach County.
Flat roofs price by the size and the system. A single-ply re-cover sits in the middle, and a full tear-off with tapered insulation sits at the top.
All service areas ↗
Flat roofing, explained
Frequently asked questions.
What does a flat roof replacement involve?
We strip the old roof, check the deck, and fix the slope with tapered insulation so water heads for the drains instead of sitting. Then the new membrane goes down, the drains and scuppers get reset, and every pipe and wall gets flashed. Size, drainage work and the condition of the deck move the price, and you get it in writing before we start.
TPO or modified bitumen for my flat roof?
TPO for most commercial roofs and the bigger flat sections: white, cooler, welded seams. Modified bitumen where the roof carries foot traffic or equipment, or for a small flat section on a house. We look at the deck, the drainage and how the roof gets used, then recommend one and price both.
Why does my flat roof keep leaking after repairs?
Usually because the repairs chased the wet spot instead of the cause. A low area that ponds, a drain that backs up, or a seam at a wall that opens every time the building moves. We walk the roof after a rain, find the ponding and the way in, photograph it, and price a fix for the cause.
How long does a flat roof last in Florida?
A well-built one gives you a good couple of decades. What shortens it is standing water and clogged drains, and both are easy to catch early. Keep the drains clear and have someone look at the seams after storm season.
Do you do flat roofs on houses, or just commercial buildings?
Both. Florida rooms, additions, garage tie-ins and the flat section behind a parapet are the flat roofs we do most on homes. We price that section on its own so you can see it. Free inspection, and the phone is answered 24 hours a day at 561-318-8624.
Get a free roof inspection.
Free inspection. Written price before anyone starts.