Commercial Roofing in Keller: Low-Slope Roofs in Heavy Hail Country
A commercial roof has fewer places to hide a leak and more to lose when one happens. Here is how building owners in Keller can keep low-slope roofs working.
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Common commercial roof systems
TPO
A single-ply membrane with heat-welded seams. Light colored and common on newer buildings. Seams and edges need regular checks.
EPDM
A rubber membrane that flexes well. Glued seams and flashing at curbs are its weak points.
Modified bitumen
Asphalt-based sheets in layers. Check for blisters, cracked laps and loose cap sheets.
Metal
Long lasting on low slopes when fasteners stay tight. Hail can leave dents that hold water.
Built-up roofs
Layers of felt and asphalt with a gravel surface. Heavy and durable, but leaks are hard to trace.
Warning signs on a flat roof
Water that stays on the roof days after a rain.
Bubbles, wrinkles or open seams in the membrane.
Loose edge metal or flashing pulling away from walls.
Ceiling tiles with stains or sagging inside the building.
Soft spots underfoot, which point to wet insulation.
Cracked sealant around rooftop units, pipes and curbs.
Clogged drains or scuppers. See flat roof drainage systems.
Hail risk for commercial roofs in Keller, Tarrant County
NOAA's Storm Prediction Center logged 217 hail reports within 10 miles of Keller from 2015 through 2024, and 46 of them were 1.75 inches or larger. The largest stone, 4.25 inches, was reported on June 11, 2023. On a flat roof, large hail can fracture the cover board, crack aged membranes and dent metal edges. Much of that damage sits under the surface and is easy to miss.
With large hail in 2015, 2021, 2023 and 2024, a survey after every major storm is a practical habit. It should include photos and a map of the damaged areas. Insurance coverage depends on the policy and the insurer. GemSco inspects, documents and provides a written estimate.
Owners comparing membranes for a new roof can start with our article on TPO vs EPDM roofing.
A maintenance plan that fits a business
Spring and fall checks
Clear drains, check seams and flashing and note any ponding.
Post-storm survey
Walk the roof after hail or high wind and photograph what changed.
Fix small issues fast
Seal open seams and replace damaged flashing before water reaches the insulation.
Plan work around operations
Stage repairs by section and schedule noisy tasks at quiet hours. See reducing business disruption during roof repairs.
Budget for replacement
Track leaks and repairs so you can plan a new roof before it fails. More in our commercial roof maintenance plan guide.
GemSco on commercial projects
Before a survey, gather what you have: the roof's age, past repair invoices, any prior storm claims and a list of the rooms where leaks have shown. That record shortens the visit and helps the crew connect stains inside to spots on the roof.
GemSco handles residential and commercial roofing, including low-slope and flat roofs and metal. We are family owned, fully licensed and insured, with 20+ years of experience, and estimates are free. Learn more about our commercial roofing service.
Frequently Asked Questions
How do I know if hail damaged my flat roof?
Look for dents in edge metal and rooftop units, cracked or punctured membrane and soft spots underfoot. Many hits only show on a close inspection, since cover boards can fracture under an intact surface. A survey with photos after each large storm is the reliable way to know.
Is it better to repair or replace a commercial roof?
If leaks are few and the insulation is mostly dry, repairs extend the roof's life. If water has spread under the membrane, seams fail across the roof or leaks keep returning, replacement is usually the better use of the budget. An inspection with moisture checks helps decide.
Can GemSco work on occupied buildings?
Yes. Work can be phased by section and planned around business hours, with access routes and safety zones agreed before the crew starts. The goal is to keep the building open and dry during the project.
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