
The flat roofing contractor that actually calls you back
A flat or low-slope roof needs a membrane rather than shingles, because water sits on it instead of running off. We install multi-ply modified bitumen on flat-roof homes, additions, and porch roofs across San Antonio, where the layered build resists punctures and keeps moving with the deck through a Texas summer.
The flat roof most roofers won't touch
Plenty of San Antonio homes carry a flat or low-slope section: the Southwest-style house with parapet walls, the mid-century ranch, the addition, the porch or garage roof tied into a shingle main. Shingle crews don't want the job and won't return the call, so homeowners chase roofers for a section that leaks worse than any of the sloped part. We answer, we show up, and you get a photo report of exactly what your low-slope roof needs.
Repair, restore, or replace
Most flat-roof leaks start at seams, flashing, penetrations, or ponding zones, and most are repairable. When the membrane is aging but sound, a reflective coating restores it: recoating every 5 to 10 years is the standard play for stretching a modified bitumen roof past its typical 15 to 25 years. Full replacement is the last resort, and we'll show you the moisture evidence that justifies it before we quote it.
Ponding water is the killer
On a 2 percent slope there's nowhere for mistakes to drain. Water still standing 48 hours after rain is the number one flat-roof killer, and it calls for drainage correction, a bigger fix than the puddle suggests. Twice-a-year inspections catch it early, before a small ponding problem turns into rotted decking and interior leaks.
Catch it at the seam-repair stage, before it's a ceiling and drywall problem.
Get the flat roof looked atDo I need a full tear-off to fix a leaking flat roof?
Usually not. Most flat-roof leaks trace to a seam, a flashing detail, a penetration, or a ponding spot, and those are repairs, sometimes paired with a reflective recoat that extends the membrane's life. Tear-off makes sense when the membrane is saturated or failing broadly, and that's a call we make from moisture evidence and photos, which you see too.
What's included
- Modified bitumen multi-layer systems
- Leak diagnosis on existing flat roofs
- Reflective coating restoration
- Drainage and ponding correction
- Flat-roof homes, additions, and porch roofs

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Get a straight answer on your roof
A free inspection by a Haag Certified Inspector, photos of what we find, and a recommendation you can check for yourself.
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