Commercial Roof Leak Repair in Leander
A leak over a tenant or a server room costs money every day it stays open. Plenox is licensed and insured, finds the real source of a commercial roof leak across TX, fixes it right, and backs the work with a lifetime workmanship warranty.
Finding where a commercial roof actually leaks
The hardest part of a commercial roof leak is almost never the fix. It is finding where the water is really getting in. On a low-slope commercial roof the spot that drips on the ceiling is rarely under the hole. Water gets through one weak point, runs sideways along the deck or down a seam, and shows up ten or twenty feet away, so the stain inside tells you almost nothing about where the breach is up top. A crew that just slaps mastic over the wet ceiling spot is patching the wrong place, which is why so many commercial leaks come back the next time it rains.
We work the roof from the source instead. We get up top, follow the slope the way the water follows it, and check the places commercial roofs actually fail: the curbs under rooftop HVAC units, the pipe and drain penetrations, the scuppers, the parapet walls and the edge metal. We look hard at any low spot where water ponds and sits, because standing water is the thing that finds a tired seam and pushes through it. Once we know the real entry point we tell you straight what it will take to make it watertight, whether that is a few hand-sealed details or a larger section that has finally given out.
We chase leaks on flat and low-slope roofs across TX: warehouses, offices, retail and storefronts, restaurants, churches, apartment buildings and the low-slope sections on homes. When you are ready, your free roof quote costs nothing and the visit is no-obligation.
What commercial leak repair covers
- Leak source tracing on flat and low-slope roofs
- Ponding water diagnosis and re-slope
- Curb, pipe, drain and scupper re-flashing
- Seam and membrane patch and re-weld
- Parapet wall and edge-metal sealing
- Emergency tarp and temporary dry-in
- Interior stain and entry-point mapping
- Repair or full restoration when a roof is spent
How we stop a commercial roof leak
No numbered circles, no sales theater. Here is the order we work in on a leaking commercial roof, every time.
We trace the leak to where it really starts
Before we touch a thing we get up top and find the actual entry point, not the ceiling stain. We follow the slope the way the water moves, check every curb, drain, scupper, seam and edge, and look hard at any low spot that ponds. On a commercial roof the breach is almost always somewhere other than where it drips inside, so finding the true source first is the whole difference between a fix that holds and a patch that comes back.
We dry it in if water is still getting in
If the roof is open and rain is on the way, we do not wait. We get a temporary dry-in or tarp over the breach so the inside stops taking water and the deck stops getting wetter while we plan the real repair. A delayed fix on an active leak is how a small membrane problem turns into rotted decking and a ruined ceiling, so we stop the bleeding first.
We fix the cause, not just the wet spot
Once we know the real entry point we make it watertight for good. That can mean re-flashing a curb or pipe by hand, re-welding or patching a failed seam, clearing or re-sealing a drain, or re-slope work where ponding water keeps soaking a low spot. Where the membrane itself is spent over a larger area we tell you that too, because sealing one detail on a roof that is failing across the board just moves the next leak a few feet over.
We stand behind the repair for life
The repair carries a lifetime workmanship warranty plus six years of weatherproofing done annually, included. On a commercial roof that annual visit is what keeps the next leak from ever opening: we catch a lifted seam, a clogged drain or a tired flashing in year two and re-seal it long before it ever shows up as a stain on a tenant’s ceiling.
Why ponding water is behind so many leaks
If your commercial roof keeps leaking after it has been “fixed” more than once, ponding water is usually the reason. On a low-slope deck the rain does not run off in minutes the way it does on a steep roof. It moves slow, and anywhere the slope is off it pools and stands. Ponding water is constant weight, constant moisture and constant UV cooking the membrane in one spot, and over a TX summer that is exactly where a built-up or single-ply roof starts to blister, split and let go at the seam. Patch the seam and the water is still standing on it, so the same low spot opens up again. That is why we look at drainage on every leak call, not just the breach. If a roof ponds badly, the real repair includes building the pitch back in so the water finally clears instead of sitting on the next weak point.
Standing water finds a tired seam and pushes through it.
Why we check drainage on every leak callThe other reason commercial leaks repeat is the details, the curbs and drains and edges where the membrane gets interrupted. A flat roof on a TX building is loaded with rooftop equipment, and every unit, vent and drain is a place the field stops and a hand-made seal takes over. Spring hail and the kind of wind that grabs a loose edge go straight for those weak points, so a leaking roof here usually has more than one detail starting to fail. We tie our repairs into ventilation done the way Lomanco taught us, so trapped heat and moisture are not working on the deck from underneath while the storms work on it from above. If a roof is leaking in several spots, staining tenant ceilings, or pooling after every rain, those are the signs it has moved past one-off repairs. The same crew also handles commercial flat roofs, TPO roofing and storm restoration, so if the roof is spent we can take it from leak repair to a full re-roof with one team. See finished work in our project gallery.
Ponding water on a low-slope commercial roof
Backed in writing, not just promised
A leaking commercial roof is already costing the building owner money, so who does the repair matters more than the brand on the sealant. Our crews are OSHA certified, which on a commercial roof with rooftop equipment, live edges and wet surfaces is not a line on a brochure, it is the standard the work is held to. We are also Lomanco-certified in attic ventilation design, so trapped heat and moisture are pulled out instead of left to work on the deck from below a low-slope membrane and open the next leak.
Every commercial leak repair we make carries a lifetime workmanship warranty, so we stand behind how the detail was sealed for as long as you own the building. On top of that, the job includes six years of weatherproofing done annually, with a tech back on your roof each year checking drains, seams and flashings and re-sealing small issues before they grow. That is how a roof that was leaking goes from a recurring headache to one that stays dry, instead of a patch you re-pay for every spring.
Commercial roof leaks, answered
The questions property managers and building owners ask us most when a commercial roof starts leaking. Already taking water inside? Call and we will get out to look.
Call (432) 288-5562Why does my commercial roof keep leaking in the same spot?
Usually because the last fix patched the ceiling stain instead of the real entry point. On a low-slope roof the water gets in at one weak spot, runs sideways along the deck or a seam, and drips somewhere else entirely, so a patch over the wet ceiling spot does nothing to the actual breach. The other common reason is ponding water: if the slope is off and water keeps standing on a low spot, sealing the seam there does not help because the water is still sitting on it. We trace the leak to its true source and fix the cause, not the symptom.
Where do commercial roof leaks usually start?
Almost never in the open field of the membrane. They start at the details: the curbs under rooftop HVAC units, the pipe and drain penetrations, the scuppers, the parapet walls and the edge metal. Every one of those is a place the membrane stops and a hand-made seal takes over, so that is exactly where we slow down and look first. Ponding low spots are the other big one, because standing water finds a tired seam and pushes through it. We check all of those before we ever talk about a repair plan.
Can you stop the leak today if it is actively raining in?
If water is still getting in, our first move is a temporary dry-in or tarp over the breach so the inside stops taking water and the deck stops getting wetter while we plan the real repair. That buys time without pretending it is the permanent fix. We come back to make it watertight for good once we have traced the true source and the weather allows a proper repair. The fastest way to get on the schedule is to call (432) 288-5562 and tell us what is happening inside.
Should I repair the leak or replace the whole roof?
It depends on how much of the roof is failing. If the membrane is sound and the problem is one or two details or a ponding low spot, a targeted repair is the right call and it saves the cost and disruption of a re-roof. If the roof is leaking in several spots, the insulation is wet, or the membrane is blistering and splitting across the field, those are signs the system is spent and repairs only move the next leak a few feet over. We get on the roof, see what is really happening, and tell you straight which one your building actually needs.
Do you repair leaks on TPO and other flat-roof membranes?
Yes. We repair leaks on single-ply membrane like TPO, on built-up and modified-bitumen systems, and on the low-slope sections of residential roofs. On a TPO roof a leak is often a seam that has lost its weld or a penetration that was never detailed right, both of which we can re-weld or re-flash by hand. You can read more about the membrane itself on our TPO roofing page, or see our broader low-slope work on the commercial flat roofs page.
Do you only work on large commercial buildings?
No. We chase leaks across the whole range of flat and low-slope roofs: warehouses and offices, but also storefronts, restaurants, churches, apartment buildings and the low-slope sections on homes. The method for tracing and stopping a leak is the same whether it is a single back-of-house section or a full commercial field, and the same crew handles both. Tell us what the building is and where it is taking water and we will tell you what it needs.
Tell us where your roof is leaking
We started Plenox to do it the right way and build lasting relationships, so the first thing we do is come look. Tell us what the ceiling is doing, a stain, a drip, water after every rain, and we will trace it to the source and give it to you straight. Your free roof quote costs nothing and you are under no obligation.
Commercial leak repair in Leander and across TX
Home base is Leander and the Austin metro, but the crew travels statewide to track down a commercial roof leak. A few of the cities we cover:
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