Flat and low-slope roof replacement, watertight.
Additions, porches, and low-slope buildings need a membrane system, not shingles. We replace flat and low-slope roofs across the DFW Metro with drainage built in from the start.
Absolute Professional Roofing Contractors replaces flat and low-slope roofing across the DFW Metro, on home additions, porches, and low-slope commercial buildings alike. Shingles are built to shed water on a slope, and once a roof flattens out, water sits instead of running off, which is why low-slope sections need a membrane system built for standing water rather than an asphalt product. We've worked in the region since 2009 and hold TX roofing license #80001716.
Why does a flat section of roof keep leaking when the rest of the house is fine?
It's almost always a drainage or membrane problem rather than a workmanship issue with the surrounding roof. Flat and low-slope sections rely on the membrane and the slope built into the deck to move water to the drains, and once that membrane cracks, seams open, or the drainage gets blocked, water sits on the roof instead of running off. Standing water finds every weak point eventually, which is why low-slope leaks often show up in a different spot than where the water is actually pooling.
Signs a flat or low-slope roof needs replacing
Ponding water that doesn't drain within a day or two
Standing water after a rain means the slope or the drains aren't moving water off the roof the way they should, and it accelerates membrane wear right where it sits.
Cracked, bubbled, or lifted membrane
Sun exposure and temperature swings break down membrane over time, and cracks or bubbles are usually where water is starting to get underneath it.
Interior staining below a flat section
A ceiling or wall stain below a porch, addition, or low-slope section usually traces back to a membrane seam or a drain that's failed above it.
A membrane roof approaching or past its expected service life
Like any roofing material, membrane systems have a working life, and one that's cracking and patched in multiple spots is usually past the point where more patching makes sense.
What we look at before recommending replacement
Drainage and slope
We check whether water actually has a path off the roof, since a membrane replacement without fixing drainage just leads to the same problem again.
Membrane condition and seams
Seams and flashing details are usually where a membrane roof fails first, so those get inspected closely before recommending a full tear-off.
Decking condition underneath
Standing water and old leaks can soften the decking below the membrane, and that gets checked and replaced as part of the job.
Insulation and roof assembly
On commercial and addition roofs, the insulation layer under the membrane affects both performance and how the new system gets installed.
What to expect during the visit
We remove the old membrane down to the decking or insulation layer and check the deck for soft spots or water damage. Drainage gets evaluated so the new roof actually moves water off instead of letting it pond again. A new membrane system, whether that's TPO, EPDM, or modified bitumen depending on the building, gets installed with properly detailed seams and flashing at every penetration and edge. We clean up the site and walk the finished roof with you before wrapping up.
Related services you may need
For low-slope commercial buildings, our Commercial Roofing team handles the membrane selection and coating options in more detail. If storm damage is part of what's driving the replacement, Storm & Hail Restoration can document that damage and help with the insurance process.
The cost of waiting
Standing water and a failing membrane don't improve on their own, they open up further with every rain and every hot Texas day baking the surface. What starts as a small seam leak or a slow drain works its way into the decking and insulation below, and a roof that could have been a straightforward membrane replacement turns into one that also needs deck and insulation repair. Addressing drainage and membrane wear early keeps the job smaller.
How long does a flat roof replacement take?
It depends on the roof's size, how much decking or insulation needs replacing, and the drainage work involved. A straightforward re-membrane job moves faster than one where standing water has damaged the deck below, so we give a real timeline after inspecting the roof.
Can a flat roof just be repaired instead of replaced?
Sometimes. An isolated seam failure or a single damaged section can often be patched, but a membrane that's cracking broadly or a roof with recurring ponding usually needs a full replacement, since patches on a failing membrane don't hold for long.
What drives the cost of a flat roof replacement up or down?
Roof size, the membrane type, and how much drainage or insulation work is needed are the main factors. Decking condition underneath the old membrane also plays a big role, which is why the final scope comes together after a full inspection rather than a guess from the ground.
Call us for a free inspection of your flat or low-slope roof, whether it's a home addition or a commercial building. We serve the DFW Metro and give you a straight answer on repair versus replacement before any work starts.
- Full roof replacements built for Texas heat, hail, and high winds, installed to manufacturer specifications with quality materials.