Roof Decking and Underlayment Replacement in Houston, TX
The decking is the part of your roof nobody sees until the shingles come off. It is the plywood or OSB sheathing nailed to your rafters. Everything else sits on top of it. When decking rots, no shingle on the market will keep water out. Roof decking replacement in Houston is one of the most common findings on a tear-off, and it is also one of the most disputed items on an insurance claim. Russell Mullin spent years as an insurance adjuster before founding STX Roofing. He knows how carriers look at decking, and he knows how to document it properly.
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What Roof Decking and Underlayment Do
Decking is the structural surface of your roof. It ties the rafters together and gives the fasteners something to bite into. Underlayment is the water-resistant layer between the decking and the shingles. Together they form your secondary defense. FEMA guidance on sloped roof systems describes upgraded underlayment as a significant secondary water and impact barrier that protects the roof if the covering is lost or damaged. That matters on the Gulf Coast. If wind strips shingles during a tropical system, the underlayment is what stands between the storm and your attic. Standard felt is one option. Synthetic underlayment holds up better to heat and foot traffic. Self-adhering membrane is used in valleys and around penetrations. We spec the layers based on the roof, not a one-size template. On a full roof replacement, these layers are rebuilt from scratch rather than worked around.
Signs Your Decking Needs Attention
You will rarely see decking damage from the ground. These are the signals we look for. The roof deck feels spongy or flexes underfoot. There are visible dips or waves in the roof plane. Water stains appear on attic sheathing or rafters. You can see daylight through the deck from inside the attic. Nails are backing out and creating raised spots under the shingles. Shingles will not lie flat after a repair. There is a musty smell in the attic after rain. Long-term leaks are the usual cause, which is why roof leak repair in Houston should never stop at the shingle. A slow drip around a chimney or vent boot can soak a sheet of plywood for years before anything shows on your ceiling. By then the fasteners have lost their grip. Delamination is the other common failure in Houston. Heat and humidity separate the layers of OSB until the panel loses strength.
How We Replace Decking and Underlayment
Decking work almost always happens during a tear-off, because you cannot inspect what you cannot see. We remove the existing roof covering down to the deck. Then we walk every square foot and mark soft spots, delaminated panels, and rot. We photograph each area before we cut anything. Replacement is done panel by panel. We cut back to solid framing and fasten new sheathing with ring-shank nails, which hold better under uplift than smooth-shank. FEMA recommends ring-shank nails or screws for sheathing in high-wind regions and advises against staples. Then we install the underlayment system. We tape or seal deck seams where the scope calls for it, install drip edge at the eaves, and integrate flashing at every penetration. If this is an insurance job, we send the deck photos and measurements into the supplement before the new roof goes on. That is far easier than arguing about it later. We also check the attic while we are there. Poor ventilation bakes the deck from below. If we see that pattern, we bring it up. Fixing the roof without fixing the airflow just restarts the clock.
Why Choose STX Roofing
Decking is where a lot of contractors cut corners, because the homeowner never sees it. We photograph everything and show you the pictures. Russell Mullin’s insurance adjusting background is the reason we document the way we do. Most decking disputes are lost because nobody took a photo at the right moment, and that is the same reason our insurance claim assistance starts on the roof rather than at the desk. We are veteran-owned, GAF Master Elite, and CertainTeed ShingleMaster certified. We hold an A+ BBB rating and are bondable to $750,000. Qualifying residential systems carry a lifetime labor warranty backed by Directorii. We do not waive deductibles and we do not take assignment of benefits. Under Texas House Bill 2102, effective September 1, 2019, a contractor who waives your deductible commits a Class B misdemeanor. Anyone offering to do it is telling you something about how they work.
Where We Work
We replace decking and underlayment across Greater Houston and the Lake Houston area, including Huffman, Houston, Atascocita, Kingwood, Humble, Crosby, Porter, Dayton, Liberty, Baytown, Spring, and Tomball. Decking condition tends to track with roof age and attic ventilation. Homes built in the 1970s and 1980s around Humble and Crosby often have thinner original sheathing than current code calls for. Poorly vented attics cook the deck from below and shorten its life. When we find that pattern, we talk about ventilation at the same time. We are based in Huffman at 25419 FM 2100 Rd. Most of our work sits within about twenty-five miles of that address. For active leaks we are available around the clock.
What Affects the Investment
Decking replacement is priced by the sheet, and the count is not known until the old roof is off. That is normal and it is why a good estimate includes a per-sheet rate up front. The variables are the extent of rot, the deck thickness required, roof pitch, and access. Underlayment choice also affects cost. Synthetic and self-adhering products cost more than felt and perform better in our heat. We put the per-sheet rate in writing before we start so there are no surprises when the tear-off begins. Financing is available on qualifying projects through Credit Human and Synchrony.
Frequently Asked Questions
How do I know if my decking is bad before the roof comes off?
You usually cannot know for certain. An attic inspection catches obvious rot, staining, and daylight. A walk on the roof can reveal soft spots. But the full picture only appears at tear-off, which is why reputable estimates include a per-sheet decking rate.
Does insurance cover roof decking replacement?
Sometimes. If the decking was damaged by the same covered event as the roof, it is often payable. If it rotted slowly from an old leak, carriers usually treat that as maintenance. Documentation at the time of tear-off is what makes the difference.
Can you replace just part of the decking?
Yes. We replace only the panels that have failed and cut back to solid framing. There is no reason to re-sheath a whole roof when eight sheets are the problem.
What is the difference between felt and synthetic underlayment?
Felt is asphalt-saturated paper. It is the traditional option and the least expensive. Synthetic is a woven polymer that resists tearing, handles heat better, and stays intact longer if the roof is exposed. In Houston we usually recommend synthetic.
Will new decking make my roof stronger in a hurricane?
It helps. Properly fastened sheathing and upgraded underlayment are two of the mitigation measures FEMA recommends for sloped roofs. They will not make a roof hurricane proof, but they reduce the chance that a lost shingle turns into an attic full of water.
How long does decking replacement take?
On most homes it adds a few hours to the tear-off day. Extensive rot can add a full day. We tell you what we find before we proceed.
Ready to Get Started?
Bad decking will ruin a good roof, and you will not find out until it is too late. Call STX Roofing at (281) 601-7663 or schedule a free roof inspection. We will check your attic, walk your roof, and give you a written per-sheet rate before any work starts. Veteran-owned, based in Huffman, and led by a former insurance adjuster who documents the deck properly the first time.
