Commercial Roofs in Prosper: Keeping Newer Buildings Dry Through Hail Season
Commercial buildings in Prosper face the same hail as the homes around them. On a flat roof, the damage is often harder to see. Here is what owners and managers should know.
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Early warning signs on a low-slope roof
Ceiling tile stains or drips inside, even small ones.
Water that stays on the roof long after rain.
Open seams, blisters or splits in the membrane.
Dented rooftop units, vents and flashing after a storm.
Debris piled near drains and scuppers.
Soft spots in the insulation underfoot.
Prosper hail and flat roofs
Prosper is mainly in Collin County, an area with frequent hail. NOAA's Storm Prediction Center logged 146 hail reports within 10 miles of Prosper from 2015 through 2024. Of those, 50 were 1.75 inches or larger, and the biggest was 4.5 inches on March 24, 2019. Large hail was reported in 8 of those 10 years.
Flat and low-slope roofs take hail across a broad, open surface. Membranes can puncture, insulation boards can crush and rooftop equipment can be dented. Water that gets through a small hole may spread under the membrane before it shows inside. A building that looks fine from the parking lot can still have damage on top.
After a hail storm hits your building
Check inside first
Look for new stains, drips and wet ceiling tiles, and photograph them.
Get a roof inspection
A roofer should walk the whole surface, check seams, flashing and drains, and photograph each problem area.
Make temporary repairs
Seal open punctures quickly to stop water from spreading under the membrane.
Plan permanent work
Decide on repairs or replacement with the building schedule in mind. Our post on how to reduce business disruption during roof repairs has practical tips.
Roof systems you will hear about
TPO
A single-ply membrane widely used on commercial roofs. Seams are heat-welded.
EPDM
A rubber membrane with a long track record. Our guide on TPO vs. EPDM roofing compares the two.
Modified bitumen
Layered asphalt sheets, often found on older or smaller commercial buildings.
Metal
Common on shops and warehouses with some slope. Needs fastener and seam checks.
Questions for owners of newer retail and office space
Many commercial buildings around a fast-growing town are recent builds or still under the original owner. That raises practical questions. Who is responsible for the roof, the landlord or the tenant? Does the lease say who calls the roofer after a storm? Is there a record of the roof's condition when the building was handed over?
Answering those before a leak saves time when one happens. Keep a copy of every roof report in one place, along with photos after each major storm. Our post on signs a commercial roof needs replacement is a good reference to share with your team.
GemSco for Prosper businesses
Routine care is the cheapest way to make a commercial roof last. Clear drains, inspect seams and fix small damage before water spreads. A written maintenance plan keeps it from slipping through the cracks when staff changes.
GemSco handles residential and commercial roofing, including low-slope, flat and metal roofs. We are family owned, fully licensed and insured, with 20+ years of experience. Estimates are free. Read more about our commercial roofing service or our Prosper roofing page.
Frequently Asked Questions
How often should a commercial roof in Prosper be inspected?
Twice a year is a common rule, usually spring and fall, plus after any storm with large hail. Given how often large hail was reported near Prosper from 2015 through 2024, post-storm checks are especially important. Regular inspections catch small issues before they become interior damage.
Is a newer commercial building safe from roof problems?
Not entirely. Newer roofs can still take hail damage, and installation details like flashing and drains can fail early. A baseline inspection on a newer building gives you a record to compare against after storms, which helps with repairs and any claim.
Can we repair just part of a commercial roof?
Yes, if the damage is limited and the rest of the roof is dry and sound. Patching punctures, resealing seams and replacing small wet areas are common repairs. If water has spread through much of the insulation, replacing that section or the whole roof may make more sense.
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