What the GAF WindProven™ Warranty Actually Means

Most roofing warranties cap wind coverage at 130 mph, 150 mph, maybe 160 mph. The GAF
WindProven™ Limited Wind Warranty has no maximum wind speed. That’s not marketing language —
it’s the actual warranty language. When a qualifying GAF system is installed correctly using
the required four components, GAF covers wind damage at any wind speed. No ceiling. No upper
limit. No exclusion for “extreme” wind events.

For homeowners on the Mississippi Gulf Coast, in the Texas Coastal Bend, or anywhere in the
Rio Grande Valley — this is the most relevant roofing warranty that exists. Named storms don’t
respect wind speed caps. Sally, Zeta, Harvey, and every hurricane that’s tracked through these
markets exceeded what standard roofing warranties cover. WindProven™ doesn’t have that problem.

And here’s what the roofing industry doesn’t want homeowners to know: you don’t need a GAF
certified contractor to get this warranty. You need the right 4 components installed correctly.
That’s it. The warranty is tied to the system — not a contractor’s certification status.

Biloxi Roofing Hub →
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Pascagoula Roofing Hub →
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Biloxi Replacement Hub →
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Corpus Christi Roofing Hub →

The 4 Components That Unlock WindProven™

GAF WindProven™ requires Timberline HDZ® or UHDZ® shingles with LayerLock® technology
installed alongside four qualifying GAF accessory products. Every component matters —
this is a system warranty, not a shingle warranty.

— FROM THE ROOF NERDS AT SJ&H ROOFING —

Why WindProven™ Beats Metal Roofing for Storm Country Homeowners

The roofing industry pushes metal roofing hard in storm markets. The pitch is usually
140 mph wind rating, long lifespan, premium protection. Here’s what they don’t put
in the brochure.

1. WindProven™ Has No Wind Speed Ceiling. Metal Has 140 mph.
   A typical metal roofing wind warranty caps at 140 mph. GAF WindProven™ has no maximum
   wind speed. Hurricane Katrina made landfall with winds exceeding 140 mph. Harvey,
   Ida, Laura — all exceeded or approached that threshold. A 140 mph wind warranty on
   a metal roof is a ceiling that real Gulf Coast and Texas storms have already blown
   through. WindProven™ doesn’t have a ceiling to blow through.
2. Metal Costs 2–3x More for Less Warranty Coverage
   A properly installed GAF WindProven™ system — HDZ or UHDZ — costs a fraction of
   a metal roof installation. You’re paying 2 to 3 times more for a system with a
   lower wind warranty ceiling and none of the impact resistance benefits the UHDZ
   brings to the table. The math doesn’t work for most homeowners in storm country
   when a WindProven™ system delivers unlimited wind protection at standard replacement cost. Financing options are available for WindProven™ system installations.
3. The Question You Should Be Asking Your Contractor — Not About Certification
   The roofing industry has conditioned homeowners to ask “are you GAF certified?” as
   a proxy for quality. Here’s the better question: “Are you installing all four
   qualifying GAF components to unlock WindProven™ coverage?” Because that’s what
   the warranty actually requires. Not a certification. Not a program membership.
   Four specific components installed correctly. Contractors who lean hard on
   certification status and gloss over installation specs are selling you a badge
   instead of a system. The warranty language doesn’t care about the badge. It cares
   about the four components. Ask about those. Every time.
4. UHDZ Adds Class 4 Impact Resistance — Metal Doesn’t Automatically
   Class 4 impact resistance on the UHDZ via UltraMat™ technology is the highest
   impact rating available under UL 2218 testing. This matters for hail in Texas
   and for wind-driven debris in Gulf Coast storm events. A standard metal roof
   installation is not automatically Class 4 impact rated — that requires specific
   panel profiles and installation methods. The UHDZ system delivers Class 4 impact
   resistance standard, across the entire shingle field and the TimberTex® ridge cap,
   at a fraction of the cost of a metal system.
5. 30-Year Algae Protection on UHDZ — The Gulf Coast and South Texas Need This
   The 30-year StainGuard Plus PRO™ algae protection warranty on the UHDZ is the
   longest algae protection warranty GAF offers. In the Mississippi Gulf Coast
   humidity environment and South Texas heat, algae discoloration accelerates
   faster than in mild climates. The UHDZ system addresses this with 10% more
   time-release algae-fighting capsules than standard StainGuard Plus™ products.
   Your roof looks right and performs right for 30 years against one of the most
   common complaints in these markets.
6. The Complete Picture — What the UHDZ System Actually Delivers
   Unlimited wind speed protection. Class 4 impact resistance. 30-year algae
   protection. Lifetime limited warranty against manufacturing defects. All from
   a single correctly installed 4-component GAF system. This is the cream of the
   crop for storm country roofing — and it’s available at standard asphalt
   replacement cost. No metal roofing premium. No certification gatekeeping.
   Just the best system available, installed correctly.

HDZ vs UHDZ — Which System Is Right for Your Home?

Both systems qualify for WindProven™ unlimited wind warranty. Here’s how they differ
and when the UHDZ upgrade makes sense.

WindProven™ Systems — Every SJ&H Market

SJ&H Storm Tracker

This is the same public storm data we watch for incoming gust events across Biloxi,
Pascagoula, Corpus Christi, and the Rio Grande Valley. Named storms, squall lines,
and Gulf moisture events hit these corridors every year. Watch what we watch.

Storm data source: National Weather Service (NWS)

Tap to Load Radar Loop (Fast Mode)

Tip: tap the radar image to open the interactive live radar.

Roof Nerd rule: once gusts start pushing 35–45+ mph, weak zones (ridge, edges, flashing, starter strip, ridge cap) go from “fine yesterday” to “active damage tonight.”

Ready to talk about installing a WindProven™ system before the next storm season?
228-546-2495 (MS Gulf Coast) —
361-248-8540 (Corpus Christi) —
956-833-2669 (McAllen)

GAF Video Vault (Timberline Series)

Quick 1–3 minute clips from GAF that explain the Timberline lineup and what wind rating language actually means.

Video source: GAF (official YouTube)

Timberline HDZ — Unlimited Wind Rating

Timberline HDZ Shingles

Timberline UHDZ — Class 4 Impact + Unlimited Wind

Questions about which system is right for your home or market? Call now:
228-546-2495 (MS) —
361-248-8540 (Corpus Christi) —
956-833-2669 (McAllen)

Why Homeowners Across the Gulf Coast and Texas Trust SJ&H for WindProven™ Installation

Expert Craftsmanship

Every WindProven™ system depends on installation quality. We install the qualifying components correctly, document the work, and build for actual Gulf and Texas storm conditions.

High Quality Materials

Timberline HDZ®, Timberline UHDZ®, qualifying starter, deck protection, and ridge components — the full system matters, and we install the full system.

Client-Focused Service

We explain the warranty, the components, the cost, and the real-world storm value so you understand what you’re buying before the first shingle goes on.

Prompt & Clean Work

We show up on time, finish on time, and clean up thoroughly. Crews protect your property, remove debris daily, and minimize disruption to your home or business.

Transparent Pricing

You’ll always know the scope, cost, and timeline before work begins. We provide clear roof-cost breakdowns and flexible financing options, not surprise add-ons.

How SJ&H Installs a WindProven™ System

The warranty is only as good as the installation. Here’s how we make sure every
WindProven™ system we install actually delivers what the warranty promises.

• Pre-Installation Assessment: decking condition, ventilation balance, and existing failure modes documented with photos before anything comes off. The new system gets specified to address what the old one tells us. See our roof repair guide for how we diagnose before we scope.
• All 4 Components, No Substitutions: qualifying GAF starter strip, qualifying roof deck protection, qualifying shingles, and qualifying ridge cap — every time, no shortcuts. The WindProven™ warranty requires all four. We install all four.
• Wind Zone Fastening Patterns: correct nail placement and count per shingle for the wind zone we’re working in — Gulf Coast Mississippi, Texas Coastal Bend, Rio Grande Valley. The fastening pattern is part of the installation spec that makes the system perform under load.
• Photo Documentation Throughout: underlayment installed, starter strip at eaves and rakes, shingle field, ridge cap, all flashing and penetrations — documented so you have a complete record of the system that was installed.
• Final Walk-Through and Documentation: we confirm the system, walk you through what was installed, and give you the documentation that supports your WindProven™ warranty coverage.

WindProven™ FAQ

More roofing questions? Visit the full AI Roofing FAQ →

Mississippi Gulf Coast:
Biloxi •
Biloxi Replacement Hub •
Pascagoula •
Ocean Springs •
D’Iberville •
Moss Point •
Residential •
Commercial

Texas Coastal Bend:
Corpus Christi •
Portland •
Rockport •
Aransas Pass •
Ingleside •
Sinton •
Calallen •
Kingsville •
Robstown •
Padre Island

Rio Grande Valley:
McAllen •
Mission •
Pharr •
Edinburg •
Weslaco •
Donna •
Alamo