Deliverable 01 · Photo set
Photographs of every defect
Close enough to see the damage, wide enough to show where it sits on your roof.
Austin, Texas
Austin Commercial Gutters, Scuppers, and Roof Drains
If water is spilling over your gutters, pooling at the base of the building, or finding its way behind the fascia, the problem is almost never the membrane — it's drainage that was never sized to the load. Here's how ARP fixes that.
ARP Roofing & Remodeling sizes and installs commercial drainage across the Austin metro — box gutters, large seamless commercial-gauge runs, oversized downspouts, scuppers, and internal roof drains. Every job starts with a walked roof, a written per-opening scope, and photo documentation. Book your free drainage assessment.
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Why ARP
Why Austin Property Teams Bring ARP Their Drainage Problem
On a low-slope commercial roof, water doesn't run off — it gets moved off, on purpose, by a drainage system you rarely think about until it stops keeping up. Drainage is one part of the Austin commercial roofing work ARP scopes on your building. Undersized gutters, too few downspouts, or a scupper cut small for the roof above it all end the same way: water pools where it can't leave, ponds against the membrane, and works into the seams and parapet flashing. Across Travis, Williamson, and Hays Counties, that ponding is the most common failure ARP inspects — and it almost always traces back to drainage that was never sized for the roof it serves.
Austin makes that worse two ways. Commercial roofs here carry large footprints — a distribution building off US-290, an office flex near the Domain, a strip center in Round Rock — so a single roof plane collects an enormous volume before it reaches an outlet. And Central Texas rain doesn't arrive politely; it comes in short, violent bursts that drop inches in an hour. Drainage sized for a gentle afternoon sheets over the fascia in a storm like that. ARP sizes the system to the roof area and the downpour it has to swallow, not to whatever line item was cheapest.
ARP has completed commercial roofing work for the Hays County Fire Department and serves buildings from downtown Austin out through Kyle, Buda, Pflugerville, Georgetown, and Cedar Park. One ARP project manager runs your job start to finish — the walkthrough, the written scope, the sizing math, and the before-and-after photos your ownership or board can read.
The Commercial Drainage
The Commercial Drainage Systems ARP Installs
Gutters on a commercial building aren't trim — they're one part of a drainage path that has to carry water off the roof and away from the wall without bottlenecking. ARP installs the full range, matched to your roof type, parapet detail, and building height:
- Box gutters — heavy commercial-gauge troughs for parapet and eave lines, built to move real volume rather than the residential K-style you'd hang on a house.
- Large seamless commercial-gauge runs — formed to length on site so a long roofline has fewer joints and fewer leak points.
- Oversized downspouts and conductor heads — sized to carry everything the gutters collect, so the system doesn't choke at the outlet and dump against your building.
- Scuppers — through-wall or through-parapet outlets that let a low-slope roof shed water where a perimeter gutter can't reach.
- Internal roof drains — for large interior planes where water has to leave through the deck rather than the edge.
The right mix depends on how your roof is built: a parapet roof leans on scuppers and internal drains, an eave-drained building on box gutters and downspouts. ARP scopes the combination during the assessment — and for the universal breakdown of how commercial drainage gets specified, our commercial roofing contractor in Texas page carries the system-by-system detail.
Installed Cost
What Commercial Gutters and Drainage Cost in Austin
Austin commercial gutters run about $27–$35 per linear foot for box gutters and $27–$32 per linear foot for large seamless runs, installed. New scuppers run $500–$1,000 per opening and new internal drains $900–$1,800 per opening. Gutter repair or reseal runs $500–$1,000.
Commercial drainage is priced two ways, and neither is per roof square foot. Gutter runs go per linear foot and scuppers and drains go per opening:
| Item | Basis | Installed price |
|---|---|---|
| Box gutters | per linear foot | $27–$35/lf |
| Large seamless commercial-gauge runs | per linear foot | $27–$32/lf |
| New scupper | per opening | $500–$1,000 |
| New internal roof drain | per opening | $900–$1,800 |
| Gutter repair or reseal | per line | $500–$1,000 |
Those bands hold across the Austin metro, and your total is figured once ARP measures the footage and opening count. What's included in the per-foot and per-opening numbers:
- Material at the gauge your building needs.
- Corrosion-resistant fasteners.
- Forming and installation.
- The written scope with photos.
What moves the price is linear footage, gauge, downspout and conductor-head count, and how many openings the roof actually requires — which is why ARP measures before quoting.
One thing ARP won't do is bury the drainage in a reroof price. On a new single-ply reroof, new scuppers and drains are itemized per opening on the estimate — never folded in as "free" or "included." Positive drainage is a warranty condition many membrane manufacturers write into the contract, so the openings that make the warranty valid show up as their own honest line instead of quietly padding the roof number.
Retrofit Drainage Without
Retrofit Drainage Without a Full Reroof
You don't always need a new roof to fix a drainage problem. On older buildings across Travis and Williamson County, the membrane still has years left but the original drainage was undersized from day one, or an addition changed how water moves across the roof. ARP retrofits box gutters, adds downspouts, enlarges or adds scuppers, and cuts in new internal drains as standalone work — sized to the roof you have now, not the one it was drawn as.
Where drainage has failed long enough to pond water and blister or split the membrane, that's no longer just a gutter conversation — it's a repair. ARP documents the ponding, the affected membrane, and the drainage fix together so the roof is corrected once. See how that gets scoped on Austin commercial roof repair. And when a reroof is already coming, sizing the drainage right during the tear-off is the cheapest it will ever be — one mobilization, one scope, a system matched to the new roof from day one.
ARP covers the full Austin metro, so the same documented process backs your building whichever side of the region it sits on.
Get your Austin gutter quote
What seamless gutters cost in Austin
Seamless gutters are priced by the linear foot, not as one flat number — the honest answer is a range until we measure your roofline. Here's what moves your number, and how to get a firm one in writing.
How gutters are priced
Seamless gutters are priced by the linear foot, not as one flat number. Standard 5-inch aluminum sits in a lower per-foot range; oversized 6-inch systems for steep, large, or metal roofs cost more; and gutter guards add to the total. Your number depends on how many feet of gutter and how many downspouts your home needs.
Why we measure first
We size the system to the actual roof area feeding each run, not to whatever fit the old fascia — then roll the seamless gutter on-site and put a firm, itemized price in writing.
Book your free Austin gutter estimate
We measure your roofline and hand you a written, itemized price — no guessing off a photo.
Request in — we'll text to confirm
Need it sooner? Call or text (512) 312-7060.
Honest fit check
Is ARP the right fit for your Austin project?
The best way to judge any Austin contractor — us or anyone else — is to ask for a written scope, ask who your single point of contact is, and ask when the manufacturer warranty gets registered in your name. If a roofer can't answer those three plainly, that's your answer.
Yes — we're a match
A good fit if you
- Want a roofer your Austin neighbors have actually used — not a pop-up tent after the last hailstorm.
- Want everything documented and in writing, with photos, before any crew gets on the roof.
- Plan to stay in your Austin home or hold the property long term.
- Had recent hail or wind damage and want it documented correctly for your carrier.
No — we'll say so up front
Not the right fit if you
- Need a commercial job below our minimum repair scope, or a firm residential repair price over the phone — we quote every repair after an on-roof inspection.
- Need someone to start tomorrow with no inspection.
- Are choosing purely on the lowest bid, without reading the scope underneath it.
- Want a contractor to pay, waive or "take care of" your deductible — a criminal offense in Texas under Business & Commerce Code § 27.02.
We'd rather tell you that on the phone than waste a walkthrough.
No cost, no obligation
Your free Austin commercial roof assessment
A free Austin commercial gutter assessment costs nothing and comes with no obligation. A project manager checks the existing gutters, downspouts, and how water actually leaves the building, then gives you a written report and a straight recommendation.
Undersized or failing drainage backs water onto the roof and into the walls. We check capacity, the fascia and parapet behind the runs, and where the water discharges — not just the gutter face.
You get the photos and the scope whether you hire us or not, and on commercial work that scope is COO-reviewed before anything starts.
From assessment to warranty
1
Free Storm Shield Assessment
We measure your roof, photograph it, and document what's actually there — not a curbside guess. You get the photo set whether you hire us or not.
2
Written Scope Before Any Work
You'll see line-item scope, materials, warranty options, and a real number in writing. On commercial projects that document is COO-reviewed. Nothing starts until you've read it.
3
Install and Warranty Registration
A crew led by an ARP project manager does the work, pulls the Austin permit, and inspects at the key stages — then your manufacturer warranty registers in your name within 30 days.
No fee, no deposit, no pressure. We confirm your address is covered before we schedule — then a project manager walks the roof.
Questions that decide the job
Austin roofing — frequently asked questions
What's the difference between box gutters and seamless commercial gutters?
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Box gutters are heavy, wide commercial-gauge troughs built to move large volume along a parapet or eave — the right call for big roofs and hard rain. Large seamless runs are formed to length on site, giving a long roofline fewer joints and fewer leak points. Many Austin buildings use both.
How are commercial gutters priced — per foot or per roof size?
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Per linear foot for gutter runs and per opening for scuppers and drains — never by your roof's square footage. Box gutters run about $27–$35/lf, seamless runs $27–$32/lf, scuppers $500–$1,000 each, and internal drains $900–$1,800 each. ARP measures the footage and opening count, then hands you one itemized number.
Does my building need scuppers, internal drains, or both?
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It depends on how your roof is built. A parapet-walled roof usually needs scuppers or internal drains because water can't reach a perimeter gutter. A large interior plane often needs internal drains that carry water out through the deck. ARP scopes which combination your roof requires during the free assessment.
Why does my flat roof keep ponding water?
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Ponding almost always means the drainage can't keep up with the roof area feeding it — too few outlets, undersized downspouts, a scupper cut small, or drains partly clogged. Water pools where it can't leave, then works into the seams and flashing. ARP finds the bottleneck and sizes the fix to the roof.
Can you retrofit drainage without replacing the whole roof?
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Yes. When the membrane still has life left but the drainage was undersized, ARP adds or enlarges box gutters, downspouts, scuppers, and internal drains as standalone work — sized to the roof you have now. If ponding has already damaged the membrane, ARP scopes the repair and drainage fix together.
How do you size downspouts and conductor heads?
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Downspouts and conductor heads get sized to the roof area draining into them and the rainfall intensity Central Texas delivers — not a fixed default. If the gutters collect more than the outlets can carry, the system backs up and dumps against the building. ARP calculates the collection area per outlet so the drainage doesn't bottleneck in a downpour.
Explore your Austin roof
Start where your question is
Every door lands on one written scope — pick the one that fits where you are right now.
01
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Austin Commercial Storm Damage Roofing
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See Austin Commercial Storm Damage Roofing →Book your free Austin commercial roof assessment
Photo-documented, with a written condition report in hand — whether or not you hire us.
