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AfterValley Repair in San Antonio, TX
Valley repair in San Antonio usually means fixing leaks or rusted metal in the V-shaped channel where two roof slopes meet, and most jobs in the area run between $450 and $1,200 depending on the length of the valley and the condition of the decking underneath. We handle valley repairs with the same rule we apply to every Roof Repair in San Antonio job: you get a written price before any work starts, photo documentation of what we found, and a full year of coverage on the repair. If you’re seeing water stains on a ceiling near an interior corner of your house, call (361) 209-8857 and we’ll confirm whether the valley is the source.
At Crestview Roofing Co San Antonio, valley work is one of the repairs we do most often because San Antonio’s roof pitch, combined with heavy spring and fall rains, puts real stress on these channels. We’re a home roofing company founded in 2000, part of the Relay Home Co. family, and every job follows The Relay Standard: a live trackable arrival time, a written price before work begins, before-and-after photos, and a digital invoice sent by text. That means no vague verbal estimates, no surprise charges at the door, and no wondering whether the repair actually got done.
When You Need Valley Repair
Roof valleys are the angled metal or shingle channels that carry rainwater from two adjoining roof planes down to the gutter. When they fail, water doesn’t just drip, it concentrates. Here’s what typically sends San Antonio homeowners looking for our Roof Repair services:
- Water stains on ceilings near interior corners. If the stain appears where two ceiling lines converge, or on an upper wall just below a roof intersection, the valley above is the first place we check.
- Leaks during heavy rain only. Valleys move a lot of water fast. A small crack or a pulled nail can stay dry in a light shower and pour in a July thunderstorm. West Side and Alamo Heights homes built in the 1970s through 1990s are especially prone to this pattern.
- Rusted or corroded metal in the valley channel. Open metal valleys, common in San Antonio because of our roof styles, eventually rust through. Cedar and oak leaf debris sitting in the valley holds moisture against the metal and speeds this up.
- Granules piling up at gutter downspouts. If you’re seeing heavy shingle granule loss concentrated at one downspout, the valley above is likely wearing faster than the rest of the roof.
- Daylight visible from the attic at the valley line. If you can see a gap or a crack of light where the two roof planes meet inside the attic, water can see it too.
- Shingles lifting or curling specifically inside the valley. Valleys channel water, but they also channel wind. Shingle edges inside a valley are more exposed than shingles on open roof planes, and they fail first.
Our Valley Repair Process
Valley repair has a clear order of operations. Skipping steps is how leaks come back. Here’s exactly how we work:
- Confirm the valley is the actual source. Water travels. A stain on the ceiling under a valley can come from a vent pipe three feet upslope. We start with a roof and attic inspection, trace the water path, and only then quote the repair. If the valley isn’t the problem, we tell you what is.
- Deliver a written price. Before any tools come off the truck, you get a line-item price for the specific valley repair. The number on that page is the number on the invoice. No “we found additional damage” upcharges after we start.
- Remove the old valley material. We cut out the failed shingles or metal, then inspect the decking underneath. In San Antonio, valley decking often shows hidden rot because trapped moisture doesn’t dry quickly in our humidity. If the decking needs replacement, you approve that cost in writing first.
- Install new underlayment and valley material. Whether the valley is open metal or woven with GAF or CertainTeed shingles, we use the manufacturer’s specified installation method and materials. If the home has an open metal valley, we typically install 24- to 26-gauge galvalume or copper, cut and hemmed to match the roof’s slope.
- Take before-and-after photos. You receive photo documentation of the old valley, the work in progress, and the finished repair, whether you’re home or not. This is standard on every job, not an add-on.
- Send the digital invoice and the 365-Day Done Right Promise. The repair is covered in writing for a full year. If the valley repair fails within 365 days, we come back and fix it at no charge. That includes a free second visit, no negotiation, no runaround.
Valley Repair Pricing in San Antonio
Most valley repairs in San Antonio fall between $450 and $1,200. Small jobs, like resealing a short section of leaking valley Flashing Repair, land at the lower end. A full tear-out and replacement of a long valley with new metal, underlayment, and shingles on both sides runs higher, especially on two-story homes where access is harder and safety setup takes longer. Here’s the cost breakdown we see most often:
- Short valley reseal or patch (under 8 feet): $450 to $650
- Full valley re-flash with new metal, one story (8 to 16 feet): $650 to $950
- Full valley replacement with new shingles and underlayment on both slopes: $850 to $1,200
- Decking replacement (if rot is found): $3 to $5 per square foot, added to the valley repair cost with your written approval
- Emergency tarp or temporary seal (to stop active leaking same day, before full repair): $250 to $400
Three things move the price. First, the valley’s length. Second, whether it’s an open metal valley or a woven shingle valley, because metal is generally faster to install correctly but costs more in material than shingles. Third, whether the decking underneath has rotted. We quote decking work as a separate line item and you approve it before we cut. We do not bury it in the total. For an exact quote on your valley, call (361) 209-8857. Estimates are free, and the written price you get is the price you pay.
FAQs – Valley Repair
Is it cheaper to repair a valley or replace the whole roof?
Repair is almost always cheaper when the problem is contained to one valley. A single valley repair in San Antonio typically runs $450 to $1,200, while a full roof replacement on the same house might be $8,000 to $18,000 depending on size and material. The better question is whether the valley damage indicates bigger problems. If the shingles on both adjoining slopes are at end of life, a Flat Roof Patch buys time but doesn’t change the roof’s overall age. We’ll tell you straight which situation you have. Call (361) 209-8857 for an honest assessment.
How long does a valley repair take?
Most Vent Boot Repair and valley repairs in San Antonio take between two and five hours. A short open-metal valley on a one-story home can be finished in an afternoon. A long valley with decking replacement on a two-story home can take the better part of a full day. We give you a live trackable arrival time before the crew heads out and we keep you posted if the scope changes during the job.
Do you use the same shingle brand I already have on my roof?
Yes, whenever the existing shingle is still manufactured. We work with GAF, CertainTeed, Owens Corning, Boral, and other major brands, and we match both the shingle profile and the color as closely as the current product line allows. On older roofs, the exact shade may have been discontinued, and we’ll show you the closest available match before installation. The goal is a repair that doesn’t announce itself.
What does the 365-Day Done Right Promise actually cover?
It covers the repair we performed for a full year from the date of the job. If the valley repair fails within 365 days, we correct it at no charge. That includes a free second visit, no negotiation, no runaround. The guarantee is in writing and included with every repair at no extra cost.
Written by Dylan Pace, Owner at Crestview Roofing Co San Antonio, serving San Antonio.