Grapevine Commercial Roofs: Keeping a Low-Slope Roof Dry and in Service
For a business, a roof leak means closed rooms, damaged stock and unhappy tenants. Here is how Grapevine owners and managers can stay ahead of it.
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Common commercial roof systems
TPO
A white single-ply membrane with heat-welded seams that reflects sun.
EPDM
A rubber membrane, often black, joined with tape or adhesive. Compare both in TPO vs. EPDM roofing.
Modified bitumen
Layered asphalt sheets, often with a granule cap, common on older buildings.
Metal
Standing seam or panel roofs on low-slope and pitched commercial buildings.
Hail and low-slope roofs near Grapevine
NOAA's Storm Prediction Center logged 40 hail reports of 1.75 inches or larger within 10 miles of Grapevine from 2015 through 2024, with the largest at 4.25 inches on June 11, 2023. On a membrane roof, large hail can puncture thin spots, crack older membranes and crush the insulation below.
Crushed insulation is the hidden cost. It leaves soft, low spots where water collects, and the membrane above them wears faster. The building can look fine from the parking lot for a long time while the damage spreads underneath.
Grapevine crosses Tarrant, Dallas and Denton county lines. For owners with several buildings in the area, a record of each roof's age and storm history makes it easier to plan budgets and claims.
After a storm on a commercial building
Check inside
Walk the top floor for drips, wet ceiling tiles and stains near walls.
Check the roof safely
Have a roofer look at the membrane, flashing, drains and rooftop units.
Document
Photos of each issue, with locations marked on a roof plan.
Temporary protection
Seal open spots so the next rain does not add to the damage.
Plan the repair
Get a written scope and estimate, and talk with your insurer about coverage.
Signs the roof needs more than a repair
Leaks in several spots that keep coming back.
Large areas of ponding days after rain.
Membrane shrinking and pulling at the edges.
Blisters, splits or open seams across the field.
Wet insulation found during a core cut or scan.
More detail in signs a commercial roof needs replacement.
Budgeting for a commercial roof
Commercial roofs rarely fail all at once. They decline, one seam and one drain at a time, and a steady maintenance budget spreads the cost. Owners who only call a roofer when a tenant complains usually end up paying for emergency work and interior damage on top of the roof itself.
A simple plan helps: regular inspections, small repairs right away and a rough date for replacement based on the roof's condition. Our commercial roof maintenance plan article lays out what to track.
GemSco for Grapevine businesses
GemSco handles residential and commercial roofing, including flat and low-slope systems, with free written estimates. We work with owners on timing and access so the business can keep running. See our commercial roofing page, read how to reduce business disruption during roof repairs, or visit our Grapevine roofing page.
Before the first visit, pull together what you have: the year the roof was installed, past repair invoices, any roof plans and photos from earlier storms. That history helps the crew separate old wear from new damage and makes the written scope more accurate.
Frequently Asked Questions
How often should a commercial roof in Grapevine be inspected?
Twice a year is a common rule, usually in spring and fall, plus after any storm with large hail. Regular checks catch split seams, clogged drains and loose flashing early, when they are small and cheap to fix. A written log of each visit also helps with budgeting and insurance.
Can a new membrane go over the old roof?
Sometimes. A recover can work when the existing insulation is dry and the deck is sound. If moisture is trapped below, covering it seals the problem in. A survey with core cuts or moisture scans tells you whether a recover or a full tear-off is the right path.
Who should be on the roof besides the roofer?
Limit access as much as you can. HVAC techs, sign crews and cable installers often walk the roof and can puncture the membrane or leave panels loose. Ask them to report any work up there, and keep a log so damage can be traced.
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