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— Residential Roofing · Flat & Low-Slope
Flat and low-slope roofs, sealed to stay watertight.
Low-slope roofs fail at the seams and the drainage, not the shingles, because shingles don't belong there at all. Buckshot installs and repairs membrane roofs on flat and low-slope areas across Wisconsin and Iowa with our own crews and a real plan for keeping water moving off the roof.
Free flat roof quote
WI & IA · We respond in 2 hours
Start with a free inspection.
Tell us what's going on up there, a new low-slope roof, a leak, or ponding water, and we'll send a project manager to assess it and put a written report in your hands. We respond within 2 hours.
— Where It Lives
SEC 01 / 07
A different roof needs a different system.
A low-slope roof sits below roughly a 3:12 pitch, where shingles can't shed water fast enough. These areas use a sealed membrane instead. You'll find them all over a typical home.
— What We Install
SEC 02 / 07
The right membrane for your roof.
We match the system to your roof's size, slope, sun, and budget. As a GAF Master Elite contractor we also install GAF low-slope systems.
20 to 30 yrs
TPO
White, reflective thermoplastic with heat-welded seams. Energy efficient, clean-looking, and a popular low-slope choice in our climate.
20 to 30 yrs
EPDM (rubber)
A proven rubber membrane that's flexible and easy to repair. Durable and budget-friendly, with a long track record on residential low-slope.
20 to 30 yrs
PVC
Welded-seam membrane with strong chemical and grease resistance. A premium, long-lasting option for demanding low-slope roofs.
15 to 25 yrs
Modified bitumen
Multi-ply asphalt (SBS) that's tough underfoot. A reliable fit for smaller residential low-slope areas like porches and additions.
— Repair, Restore, or Replace
SEC 03 / 07
Not every flat roof needs replacing.
Most low-slope leaks trace back to a seam, a flashing detail, or a clogged drain, not the whole roof. We find the actual source, not just the stain below it, and fix what's failing.
If the membrane is still sound, we repair seams and flashing, correct drainage, and can apply a restoration coating to add years of life. If it's past that point, we tell you straight and lay out a replacement.
"We find the real source of the leak, not just the visible spot."
— How It Works
SEC 04 / 07
From inspection to final walkthrough.
One Buckshot project manager owns your job start to finish. No handoffs, no call center, no surprises.
01
Free inspection
We check the membrane, seams, flashing, and drainage, then give you a written report.
02
Itemized estimate
A line-by-line estimate naming the system, insulation, and drainage plan up front.
03
System & permits
We recommend the right membrane for your roof and pull the permits you need.
04
Installation
Our own crew installs, welds or seals seams, and builds positive slope to drains.
05
Walkthrough
We walk the finished roof with you and confirm the drainage is doing its job.
06
Warranty in writing
Manufacturer warranty plus our workmanship warranty in writing, with care guidance.
— When To Call
SEC 05 / 07
Signs your flat roof needs a look.
Low-slope problems start small and stay hidden until they reach the ceiling. Catch any of these early and a repair usually beats a replacement.
✓Standing water that lingers more than a day or two after rain.
✓Standing water that lingers more than a day or two after rain.
✓Wrinkles, blisters, or bubbling in the membrane surface.
✓Seams that have opened, peeled, or pulled apart.
✓Cracked or pulling flashing at walls, curbs, and penetrations.
✓Ceiling stains, damp drywall, or dripping below the low-slope area.
✓Bald spots or heavy granule loss on a modified-bitumen surface.
— Why Buckshot
SEC 06 / 07
Earned, Not Claimed
A crew that knows where flat roofs fail.
Low-slope roofs are unforgiving, and most leaks trace to a seam or a drain, not the field. That's exactly the kind of careful, accountable work a family company built since 1979 is set up to do.
— What Homeowners Say
SEC 07 / 07
Rated 4.9 stars across 80 reviews.
A few words from Wisconsin homeowners. Read the rest on our reviews page.
— Home Base
Madison, WI · Centerville, IA
— Flat Roof FAQ
FAQ
Anything below roughly a 3:12 pitch is low-slope. A truly flat roof still has a slight built-in slope so water can drain. You’ll see them on porches, additions, attached garages, dormers, and modern homes.
Shingles shed water by gravity and need a steeper pitch. On a low slope, water sits and works underneath them, so low-slope roofs use a sealed membrane where the seams and flashing keep you dry.
We install TPO, EPDM rubber, PVC, and modified bitumen, plus GAF low-slope systems. We match the membrane to your roof’s size, slope, sun, and budget rather than defaulting to one product.
Often, yes, without a full replacement. We find the actual source, repair seams and flashing, correct drainage, and can apply a restoration coating to extend life when the membrane is still sound. See roof repair →
Typically 20 to 30 years for TPO and EPDM and 15 to 25 for modified bitumen, depending on the install, drainage, and maintenance. Good slope and clean drains are what get you to the upper end.
Yes. Keep drains and scuppers clear, remove debris, and inspect seams and flashing periodically. Catching a small seam or flashing issue early is what prevents an interior leak later.
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Free Inspection · Family-Owned Since 1979
Get a straight read on your flat roof.
Whether you need a new low-slope roof, a leak fixed, or a second opinion on ponding water, start with a free, no-pressure inspection and a written report from a family crew that's been roofing since 1979. We respond within 2 hours.
Buckshot General Contracting, family-owned since 1979. Headquartered at 621 N Sherman Ave, Suite B5, Madison, WI 53704, with a field office in Centerville, IA. Licensed in 24 states. WI Lic. DC-080900045. GAF Master Elite and BBB A+ accredited. Flat and low-slope system lifespans and ratings vary by product, slope, drainage, and maintenance; figures are general guidance, not a guarantee. Credentials and licensing current as of publication.