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AfterValley Repair in Dallas, TX
Valley repair in Dallas typically runs between $350 and $900 for most residential jobs, depending on how much of the valley metal needs replacing and whether the decking underneath has rotted. A valley is the V-shaped channel where two roof slopes meet, and it carries more water than any other part of the roof during a North Texas downpour. When that channel fails, water gets into places it should never be. Brennan Roofing Co Dallas fixes valleys the right way: written price before work starts, background-checked technicians on site, and a full-year guarantee in writing. Call (903) 499-4441 for a free estimate, or read more about our broader Roof Repair in Dallas services.
We named this page “Valley Repair” because that is exactly what homeowners search for when they see a dark stain spreading across a bedroom ceiling and trace it back to the seam where two roof planes meet. Travis Oakley runs Brennan Roofing Co Dallas under the Garrison Standard, which means the price goes on paper before any work begins and it does not move at the door. Valleys are not a place to cut corners.
When You Need Valley Repair
Dallas roofs take a beating. The freeze-thaw cycles in January and February, the hail that rolls through in spring, and the relentless July sun all work on valley metal until it gives. Here are the specific signs that your valley needs attention:
- Water stains on ceilings or walls near exterior corners: Valleys sit at the intersection of roof planes, and leaks from them often show up on interior walls or ceilings near the outside corner of a room. If the stain grows after heavy rain, the valley is usually the culprit.
- Rust-through or holes in the valley metal: W-metal and copper valleys corrode over time, especially in Dallas where acid rain from traffic and industrial activity accelerates rust. If you can see daylight through the valley metal from the attic, it’s done.
- Granules piling up in gutters below the valley: Shingles shed granules as they age, but a valley concentrates that wear into a narrow channel. If you see heavy granule deposits in the gutter directly below a valley, the shingles there are wearing faster than the rest of the roof.
- Lifted or missing valley flashing after a storm: High winds and hail can pry valley metal away from the decking. Once water gets under the metal, it travels sideways and rots the decking in places you won’t see until the leak shows up inside.
- Visible gaps between the valley metal and the shingles: Valley metal should lay flat and tight under the shingles that overlap it. Gaps mean the underlayment is exposed, and underlayment is not designed to hold standing water.
- Moss or algae growth in the valley channel: Valleys stay wet longer than any other part of the roof. In shaded Dallas neighborhoods like Lakewood or Preston Hollow, algae and moss take hold in valley channels and hold moisture against the metal year-round.
One thing we see often in older Dallas homes: valleys that were installed with woven shingles instead of metal. Woven valleys trap water between layers and fail sooner, especially on low-slope roofs, which is why proper Flashing Repair in these areas is critical. If your home was built before 1990 and still has the original valley work, it is worth having someone look before the next big storm season.
Our Valley Repair Process
Brennan Roofing Co Dallas approaches valley repair as part of our Roof Repair services, treating it as roof surgery rather than a patch job. Here is the process, step by step, so you know exactly what happens when you call us:
- Free inspection and written estimate: We come out, assess the valley, the surrounding shingles, and the decking underneath. You get a written price before any work starts. That number does not change at the door.
- Tear-off of the affected area: We remove the shingles around the valley on both slopes, exposing the old valley metal and the decking below it. If the decking is sound, we leave it. If it’s rotted, we show it to you before we replace any of it.
- Decking repair if needed: If the plywood or OSB decking has water damage, we cut out the bad section and replace it. You will see the old wood and the new wood before we cover it up. No surprises under the shingles.
- New underlayment and valley metal: We lay fresh underlayment in the valley channel, then install new valley metal. We stock metal options that match or outperform what was there originally, including lines from Atlas and IKO for shingle systems that integrate with the valley properly.
- Shingle replacement and sealing: We re-install the shingles over the new valley, cutting them clean along the valley line so water flows from shingle to metal without obstruction. We replace any shingles that were too worn to reuse.
- Cleanup and written guarantee: We walk the valley with you, show you the work, and put the 365-Day Done Right Promise in writing. If the repair fails within a year, we come back at no charge. You also get a copy of the written price, the work order, and the guarantee before we leave.
Valley Repair Pricing in Dallas
Valley repair in Dallas costs between $350 and $900 for most homes, with larger or more damaged valleys running up to $1,500 when decking replacement and structural work are required. Here is a breakdown of what drives that number:
| Repair Scope | Typical Cost Range in Dallas | What It Includes |
|---|---|---|
| Small valley repair (10-15 linear ft, no decking damage) | $350-$550 | Removal of old valley metal or failed shingles, new valley metal, new underlayment, shingle replacement, cleanup |
| Standard valley repair (15-25 linear ft, minor decking damage) | $550-$900 | Everything above, plus decking patch and replacement of all shingles along the valley on both slopes |
| Large valley replacement (25+ linear ft, significant rot) | $900-$1,500 | Full decking replacement along the valley, structural inspection, new valley metal, new underlayment, new shingles on both slopes, cleanup |
| Valley plus adjacent repair | $600-$1,200 | When the leak has spread beyond the valley into the surrounding field shingles or eave edge, requiring additional tear-off and replacement |
What affects your final price: the length of the valley, the pitch of the roof, whether the decking is rotted, accessibility (two-story homes, steep pitches, tight lot lines in neighborhoods like Oak Cliff or East Dallas), and the type of valley metal you choose. Copper valleys run higher than galvanized steel or aluminum, but they also outlast the shingles around them.
We do not give vague phone quotes. We come out, look at the valley, and put a number on paper. The estimate is free, and the price on the paper is the price you pay. Call (903) 499-4441 and we will schedule the visit.
FAQs – Valley Repair
Is it cheaper to repair a valley or replace the whole roof?
If the valley is the only failure point and the rest of the roof has 5 or more years of life left, valley repair is almost always cheaper than a full roof replacement. Repairing a single valley costs $350 to $900, while a full roof replacement in Dallas runs $8,000 to $18,000 depending on square footage and materials, though a Flat Roof Patch may be an alternative in some cases. The decision comes down to how much life the surrounding shingles have left. We will tell you straight if we think patching the valley is throwing money away because the rest of the roof is failing. Call (903) 499-4441 and Travis Oakley will give you an honest assessment.
How long does a valley repair take?
Most valley repairs in Dallas are completed in one day. A standard valley with no decking damage takes 4-6 hours on site. If decking replacement is required, the job may run 6-8 hours. We schedule the work around the weather, because valley repair requires the decking to be dry and the sealant to set properly. You get a written window for arrival, and the technician shows up in uniform inside that window.
Can you fix just one valley, or do both need to be done?
We can fix just one valley. If the other valleys on the roof are showing similar wear, we will show you the photos and give you a written price for both, but we will not pressure you into work you do not need. The decision is yours. Many Dallas homeowners choose to do both at once because the setup costs are shared, but we will never push a second valley that is still in good condition.
Do you offer a guarantee on valley repair?
Yes. Every valley repair from Brennan Roofing Co Dallas carries the 365-Day Done Right Promise: a written guarantee for one full year. If the repair fails within that year, we come back and fix it at no charge. No fine print, no pro-rated coverage, no “that’s not covered” conversation. The guarantee is in writing, in your hand, before we leave the property.
Can you come out today for an emergency valley leak?
We answer the phone with a live person 24/7. If you have water coming into your house from a valley, call (903) 499-4441 and we will send a technician as soon as possible, often the same day. For active leaks, we can install a temporary protective cover to stop the water, then return to do the permanent Vent Boot Repair or valley repair once the roof is dry. The temporary cover is part of the written estimate, so you know what it costs before we do it.
Key Takeaways
- Valley repair in Dallas costs $350-$900 for most homes, with larger jobs up to $1,500.
- The valley is the highest-water-flow area of any roof, and Dallas weather makes it a common failure point.
- Brennan Roofing Co Dallas gives you a written price before any work starts, and that price does not change.
- Every valley repair is covered by the 365-Day Done Right Promise: free return visit in writing if it fails within a year.
- We install valley metal and shingle systems from IKO, Atlas, and Tamko, among other manufacturers.
- Call (903) 499-4441 for a free valley inspection and written estimate.
Contact Brennan Roofing Co Dallas
If you have a valley that is leaking, wearing through, or just looks wrong, call (903) 499-4441 for a free estimate. You will talk to a live person, not a voicemail. We will send a background-checked technician in uniform to inspect the valley, show you exactly what is going on, and put a written price in your hand before any work begins. That price is the price you pay. And every job is backed by the 365-Day Done Right Promise, in writing. We serve all of Dallas and the surrounding suburbs, from Highland Park and Lakewood to Plano, Garland, Mesquite, and every neighborhood in between.
Written by Travis Oakley, Owner at Brennan Roofing Co Dallas, serving Dallas.