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GAF Construction in Katy, TX | Penhallow Remodeling Houston
We provide independent GAF roofing service across Katy, and the one thing that sets our work apart here is simple: we know which GAF products fail on Katy’s clay-soil, HOA-bound homes, and we know why before we ever climb the ladder. From Timberline HDZ shingles peeling at the rake edges in Cinco Ranch to EverGuard TPO flashing failures on low-slope patio covers in Old Katy, we’ve seen the failure modes and we stock the parts to fix them fast. Call us at (254) 527-5340 for a free estimate on any GAF roof repair or replacement in Katy.
Why Katy Residents Choose Us for GAF Service
Katy homeowners call us because we don’t treat a GAF roof like a generic sheet of asphalt. We know the difference between Timberline HDZ and Timberline Ultra HDZ, and we know which one holds up better on a south-facing two-story in Katy’s 95°F+ summer heat. Trevor Nash grew up in the San Fernando Valley outside Los Angeles, where he learned that a straight wall is harder to build than it looks. He studied construction technology at Los Angeles Trade-Technical College, then spent years swinging a hammer on everything from tract homes to full gut-renovations before bringing that plain-spoken, line-item honesty to Houston and building our General Contractor in Katy team. He and our crew have been working on Katy roofs long enough to know exactly how the clay soil here shifts and what that movement does to flashing, ridge lines, and underlayment over time. We use OEM-compatible GAF parts like TimberCrest hip and ridge caps when the homeowner wants the strongest warranty match, and we’re direct about when a proven aftermarket accessory does the job for less money. Every job gets a written price before work starts, a real arrival window, and our 365-Day Done Right Promise in writing. A live person answers our phone 24/7, so you’ll never leave a voicemail into the void.
Styles & brands we work with







Common GAF Construction Problems We Solve in Katy
Certain GAF failures show up on Katy roofs with a regularity you won’t see in drier parts of Texas. Here’s what we’re out here fixing week after week:
- Wind-driven rain peeling Timberline HDZ shingles at the rake edges. Two-story brick-and-stone homes near Buffalo Bayou tributaries catch spring storm winds that grab the outermost shingles and fold them back. Once the rake edge lifts, water gets under the field shingles and saturates whatever is underneath. We see this most on Cinco Ranch and Cross Creek Ranch homes built within striking distance of the bayou fingers.
- Blistering and granule loss on south-facing Timberline roofs. Katy’s summers regularly push past 95°F for weeks at a stretch. South-facing slopes take that heat all day, every day, and after enough years the granules start sloughing off and the asphalt blisters. This is a materials-fatigue problem, not an installation error, and it’s the number one reason we get called for a full Timberline replacement rather than a patch job.
- Poorly flashed penetrations on EverGuard TPO low-slope sections. Patio covers, porch roofs, and low-slope additions in Katy often get TPO membrane installed by crews that don’t detail the pipe boots and vent flashings properly. Spring thunderstorms drop a lot of water fast, and a flashing seam that was never heat-welded correctly will leak inside the first year. We strip those penetrations and redo them the way GAF’s own details specify.
- Improperly installed Tiger Paw underlayment buckling over humid-swollen OSB. Katy’s humidity sits high most of the year. If a crew lays Tiger Paw over OSB that hasn’t been given time to acclimate, the board swells after installation and the underlayment wrinkles under the shingles. You won’t see the wrinkle, but you’ll feel it when a shingle seam telegraphs through and starts collecting water.
- Tile roof failures on older homes near Old Katy. The mid-century frame and brick ranch homes in the older core often carry concrete tile that outlives its underlayment. When the felt underneath finally goes, water runs under the tile and into the deck. Repairs there range from isolated tile replacement to full underlayment rework, depending on how far the rot has spread.
GAF Service in Katy: What Local Conditions Mean for Your Equipment
Here’s something a Houston roofer won’t always tell you: in Katy, the review process for a new GAF roof depends entirely on which side of the master-planned line you live on. A re-roof in Cinco Ranch or Cross Creek Ranch has to pass architectural review, which means specific color tones, edge profiles, and sometimes even a required shingle weight. Drive two miles into Old Katy and that review doesn’t exist; you can put nearly anything on your roof as long as it meets code. That split shapes how we stock parts. We keep Timberline HDZ in the charcoal and weathered-wood tones most Cinco Ranch HOAs have already approved, and we also carry the more economical Timberline NS for Old Katy homeowners who want a solid GAF roof without paying for architectural-review compliance they don’t need. If you’re not sure whether your neighborhood has covenants, we’ll check while we’re doing the estimate and tell you plainly what’s required before you spend a dollar.
GAF Models & Products We Service in Katy
We work on the full GAF lineup that shows up on Katy homes: Timberline HDZ and Timberline Ultra HDZ architectural shingles, EverGuard TPO membrane on low-slope sections, and Tiger Paw underlayment below the field. We also service and install TimberCrest hip and ridge caps and Deck-Armor underlayment. Our parts approach is straightforward: for warranty-sensitive repairs we use genuine GAF components, and for non-critical fixes we’ll offer proven aftermarket accessories that meet code and cost less. We keep common HDZ colors and TPO accessories stocked locally for fast Katy turnaround, so you’re not waiting on a parts shipment from Dallas while your ceiling stains spread.
GAF Service Pricing in Katy
Katy GAF roof work costs what it costs because of the scope, not because of guesswork. A full roof replacement on a Cinco Ranch two-story runs $8,000 – $20,000 depending on square footage, slope count, tear-off depth, and the shingle line you choose. Isolated roof repairs land between $400 and $1,800, and tile roof repair runs $600 – $2,500. What moves the number: whether you need a full tear-off or a single layer overlay, how many penetrations need re-flashing, whether your HOA dictates a specific shingle color or profile, and what condition the deck is in once we strip the old roof. Our free estimate includes a written line-item breakdown, so you’ll see exactly where every dollar goes before you sign anything. Call (254) 527-5340 and we’ll walk your roof and put the number in your hand.
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AfterGAF Roofing Price Ranges in Katy
| Service | Katy Price Range |
|---|---|
| Roof Replacement | $8,000 – $20,000 |
| Roof Repair | $400 – $1,800 |
| Tile Roof Repair | $600 – $2,500 |
Serving Katy, TX - Our Local Coverage Area
We’re based in the Katy area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – GAF Construction in Katy

Yes. We keep Timberline HDZ in the charcoal, weathered wood, and slate tones most Cinco Ranch and Cross Creek Ranch architectural review boards have already approved, and if your HOA calls for a specific GAF color we don’t have on the truck, we’ll order it before we start tearing off. The architectural-review paperwork is part of the pre-work process, not an afterthought. Call (254) 527-5340 when you’re ready for a written estimate.
Yes. On Katy homes with expansive clay soil, the subtle slab movement that comes with wet-dry cycles puts stress on roof-to-wall flashing and chimney flashing. Those junctions flex more than the roof field, and over time the sealant or counter-flashing cracks. We check those transitions first on any Katy leak call because they fail before the shingles do.
EverGuard TPO is a strong pick for low-slope patio covers, but only if the penetrations and edge details are heat-welded by a crew that knows how to detail them. Katy’s humidity and spring thunderstorms expose sloppy TPO work fast. We install TPO to GAF’s own detail standards and re-flash every penetration properly, because a patio cover that leaks after one thunderstorm is not a roof that’s doing its job. Call (254) 527-5340 for a free assessment of your low-slope section.
GAF warranty coverage for wind damage depends on the specific shingle line, the wind rating printed on the product, and whether the installation met GAF’s wind installation requirements. Timberline HDZ carries a limited wind warranty up to 130 mph when installed with specific fastening patterns, but a named storm claim still has to be documented and filed through the proper channels. We’ll inspect the damage, photograph everything, and help you understand exactly what your policy and warranty actually cover before you file. Call (254) 527-5340 and we’ll come look.
You can almost always repair a section of tile roof in Old Katy rather than replacing the whole thing. Tile roofs in the older core tend to fail at the underlayment, not the tile itself, so we’ll pull the damaged section, inspect what’s underneath, and replace only what’s compromised. Full replacement only makes sense when the underlayment has rotted across most of the deck. A section repair typically runs $600 – $2,500 depending on what we find under the tile. Call (254) 527-5340 for an exact number.
Service Areas Near Katy
We serve Katy and the surrounding communities, including GAF service in Houston, GAF service in The Woodlands, Richmond, and Tomball. If you’re in a nearby master-planned community or an older pocket of Fort Bend County, call us and we’ll tell you straight whether we can get a crew to you this week. Our full Katy service area covers all the neighborhoods in between. For broader GAF work across the region, see our GAF sales & service page.
Written by Trevor Nash, Owner at Penhallow Remodeling Houston, offering Bathroom Remodeling in Katy and serving the surrounding area. Trevor has been roofing and remodeling in the Houston market long enough to know what the clay soil does to a footing and what a Katy thunderstorm does to a rake shingle. He’s known for plain estimates that hold and for explaining every line item before he asks for a signature.
Give me the straight story on what you need, and I’ll give you the straight number on what it costs.
Book Your GAF Service in Katy Today
If your GAF roof is showing its age or a storm just ripped through your Katy neighborhood, don’t wait. Call (254) 527-5340 now and we’ll schedule a free estimate, walk the roof with you, and put a written number in your hand. We answer live, 24/7. Call now and get on the schedule.












