
Replacing a Roof in Galveston: Plan for Wind First
A new roof on the coast has to be built for wind, salt and windstorm paperwork. Here is what Galveston owners should plan before the old roof comes off.
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What makes Galveston different
All of Galveston County sits in the catastrophe area of the Texas Windstorm Insurance Association (TWIA). If your home is insured through TWIA, a roof replacement generally has to be inspected and certified to windstorm standards, and that results in a WPI-8 certificate. That affects nailing patterns, products and timing, so it belongs in the plan from day one. Talk to your agent first.
The housing stock matters too. Half of the homes in Galveston were built before 1973 (U.S. Census Bureau, American Community Survey 2020-2024), so the typical house is about 53 years old. Decking and roof edges on homes that age often need repair once the old roof is off.
Because the whole county is in that area, plan the inspection timing with the roofer before the tear-off, not after.
Materials for coastal wind and salt
Wind-rated asphalt shingles
Many architectural shingles come with high-wind ratings when installed with the right nailing. Compare options in how long roofing materials last in Texas.
Metal
Popular near the water for wind performance. Ask about finishes and fasteners made for salt exposure.
Stone-coated steel
A steel panel with a shingle or tile profile and a textured coating.
Tile
Heavy and durable. Attachment methods for wind matter as much as the tile itself.
Planning the project
Ask your insurer
Confirm what windstorm inspections and certificates your policy needs before work starts.
Get a written scope
Tear-off, decking, underlayment, flashing, drip edge, vents and cleanup. See what to include in a roof replacement estimate.
Choose corrosion-resistant metal
Flashing, vents and fasteners that stand up to salt air last longer near the water.
Pick a season
Scheduling outside the height of storm season lowers the risk of an open roof during a tropical system.
Keep the paperwork
Photos, invoices and any certificate go in one file for your insurer and future buyers.
Signs your Galveston roof is due
Shingles lost in several areas after ordinary storms.
Rusted flashing, vents and edges across the roof.
Curling, brittle or bare shingles.
Soft decking felt from the roof or seen from the attic.
A roof that has needed several repairs in a short time.
Water stains in the attic after storms with strong wind from one direction.
Flashing that has been sealed over many times instead of replaced.
Owners, landlords and the decision
Only 46 percent of Galveston homes are owner occupied, so many roof decisions are made by landlords. For a rental, a new roof can mean fewer emergency calls and less water damage to manage. For owners who live in the home, it is protection for the biggest asset they have. Hail is rare here, with 2 reports within 10 miles from 2015 through 2024 per NOAA's Storm Prediction Center, so wind is the main design load.
GemSco is family owned, licensed and insured, with 20+ years of experience and elite contractor status with Owens Corning and GAF. Estimates are free and roof financing is available. See our roof replacement service or the Galveston page.
Ask each contractor how the new roof will be fastened for wind, and get the answer in writing.
Frequently Asked Questions
What is a WPI-8 and do I need one for a new roof?
A WPI-8 is the certificate of compliance used for TWIA windstorm coverage. In the catastrophe area, roof work on a TWIA-insured home generally needs a windstorm inspection to receive one. Ask your insurance agent what your policy requires before the job starts, and keep the certificate with your home records.
Is metal better than shingles in Galveston?
Both can work well when they are installed for high wind. Metal is light and handles wind well, but it needs finishes and fasteners suited to salt air. Wind-rated shingles cost less up front. The right pick depends on budget, the house and your insurance requirements.
When is the best time to replace a roof on the coast?
Many owners avoid the peak of hurricane season so the roof is not open during a tropical system. Spring and late fall are common choices. Plan early, because windstorm inspections and material orders take time to schedule.
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