The leak showed up over the front counter during last week’s storm. Somebody patched it. Now it’s dripping again, two ceiling tiles over, and you’re starting to wonder if you’ve already paid for the same fix twice. Meanwhile the stain is spreading and the next storm is in the forecast.
That cycle is common with flat roofs, and it usually means the source was never found. Good commercial roof repair in the Ozarks starts with tracing where the water gets in, which is often a long way from where it comes out. Whether you own the building, manage it, or sit on an HOA board responsible for one, you need a fix that holds.
APC Roofing is a GAF Certified roofing contractor, licensed and insured, in business since 2017, with an office in Springfield. Inspections and estimates are free. Call 913-398-5020 to have your roof looked at.
Why flat roof leaks are hard to pin down
On a sloped roof, water runs downhill and the leak is usually close to the stain. A flat roof is different. Water that gets through the membrane can travel along the insulation or the deck, sometimes for many feet, before it drips through a seam in the deck below. Patching the membrane right above the stain often misses the real opening.
Water that’s been getting in for a while also soaks the insulation board under the membrane. Wet insulation doesn’t dry out on its own, it stops insulating, and it can damage the deck underneath. Part of a good repair is finding out how far the water has spread.
Where commercial roofs in the Ozarks usually fail
Seams. Single-ply membranes like TPO and EPDM are joined at seams, and a seam that’s opened up is one of the most common leak sources.
Flashing at walls and edges. Where the roof meets a parapet wall, a curb or the roof edge, the membrane turns up and is sealed. Those details take movement, sun and weather and wear out sooner than the open field.
Rooftop units and pipes. Every HVAC curb, vent pipe, conduit and roof hatch is a hole in the roof with a seal around it. Service techs walking to the units also cause punctures and scuffs.
Drains and scuppers. A clogged drain lets water pond. Standing water finds weak seams, adds weight and, in winter, freezes.
Storm damage. Spring hail in southwest Missouri can bruise or puncture a membrane and crack brittle flashing. Wind can peel back a loose roof edge.
Freeze-thaw. Water that gets into a small crack freezes and widens it. A minor opening in winter can turn into a steady leak by spring.
What commercial roof repair in the Ozarks involves
Once the source is found, the fix depends on the roof system and how much damage there is.
Open seams on TPO are typically re-welded, and on EPDM they’re cleaned and re-sealed with the right seam materials. Punctures get a patch of matching membrane. Worn flashing at walls, curbs and pipes is rebuilt rather than smeared with sealant, which tends to buy only a few months. Wet insulation is cut out and replaced so the problem doesn’t stay trapped under the new patch. Clogged drains get cleared, and where water ponds, the drainage problem gets looked at too.
Built-up and older roofs have their own repair methods, and metal roofs on shops and commercial buildings often need attention at fasteners and seams. Our pages on EPDM roofing in the Ozarks and commercial roofing in the Missouri Ozarks cover the systems in more detail.
When repair isn’t enough
Repairs make sense when the membrane is still in decent shape and the problems are in a few spots. Replacement starts to make more sense when leaks keep appearing in new places, when a large share of the insulation is wet, or when the membrane is cracking, shrinking or blistering across the roof. At that point, you can keep paying for patches or put that money toward a new roof. Our commercial roofing installation in the Ozarks page explains that path.
Storm damage and insurance
If a storm caused the damage, you file the claim with your insurance company and pay the deductible under your policy. We document the damage with photos, provide a detailed estimate and work with your adjuster. Be wary of anyone who offers to waive or cover your deductible.
How it works with APC Roofing
- Book your free inspection. Call 913-398-5020 or request a free online estimate.
- Get a clear, honest assessment and estimate. You’ll see photos of the leak source and anything else we find, with a written estimate that says what needs fixing now and what can wait.
- The repair gets done and the site gets cleaned up. The crew makes the repair and clears the debris before leaving.
A leak on a flat roof can quietly soak a wide area of insulation before anyone sees a drip. The sooner the source is found, the smaller the repair.
Commercial roof repair questions
Why does my flat roof keep leaking after it’s been patched?
Usually the patch didn’t hit the source. Water travels under a flat roof membrane, so the opening can be far from the stain.
Can you repair a roof for an HOA or a property manager?
Yes. Tell us about the building when you call, and who should receive the photos and the estimate.
Is it OK for HVAC techs to walk on our roof?
They have to, but walking paths and care around the units help. Dropped tools and boot traffic are a common cause of punctures near rooftop equipment.
Should we repair now or wait until we replace the roof?
If water is getting in, fix the leak now. Wet insulation and deck damage add to the cost of any future replacement.
Get the leak fixed for good
Stop chasing the same leak from storm to storm. Call 913-398-5020 or book your free inspection online, and you’ll know where the water is getting in and what it takes to stop it.
