
Why Choose Us to Fix Your Commercial Roof?
- Nearly 80 years of experience in the industry
- Expertise in all types of roofing materials, including metal, asphalt, TPO, EPDM, and more
- Licensed, insured, and certified professionals
- Safety is a top priority for us
- Quick response times and reliable services
- We always do our best to extend the life of the roof and avoid a replacement
After we’ve repaired the leak to avoid further water damage, we can talk about whether or not roof replacement is in your immediate future and how regular maintenance can help extend the life of your existing roof.
Common Issues that We Fix
- Blocked drains or gutters: can cause water to back up onto the roof, leading to leaks and long-term damage
- Roof aging and weathering: UV rays, wind, and other elements naturally wear down roofing materials
- Blistering and cracking: weather exposure can cause blisters, cracks, and splits in the roofing material, compromising its waterproofing ability
- Flashing damage: loose or deteriorating flashing around roof edges, chimneys, and vents can allow water to seep into the building
- Membrane punctures and tears: caused by debris, foot traffic, or weather events
- Poor installation or workmanship: faulty installation or past repairs that didn’t meet standards can lead to persistent problems, such as uneven surfaces or improperly sealed seams
- Ponding water: flat roofs often struggle with drainage, causing standing water that can lead to structural damage and membrane deterioration
- Leaks and water intrusion: caused by damaged membranes, punctures, or poor sealing around vents and skylights, leading to interior water damage
If you suspect a commercial roof leak or know for sure, get in touch with us. We’ll assess the situation and get your roof repaired quickly and correctly.

Emergency Roof Blow-Off and Repair in Lancaster, PA
During a severe windstorm, Franklin & Marshall College made an emergency call to GSM Roofing to address a critical situation at the 56,000 sq. ft. Alumni Sports & Fitness Center. The roofing material was lifting up to eight feet high, creating a dangerous, wing-like effect that threatened to tear the roof away from the structure.
GSM responded immediately, deploying a full crew to work alongside the college’s Facilities Department. We used 100-pound concrete pavers and sandbags to secure the roof and prevent further uplift. Swift action was essential in preventing a complete roof failure, which would have left the building vulnerable to significant water damage.
Commercial Roof Repair FAQ
How quickly can GSM Roofing respond to a commercial roof repair request?
GSM Roofing provides emergency repair service 24 hours a day, seven days a week, 365 days a year. For non-emergency repairs, our team will assess your situation and schedule service as quickly as possible to minimize disruption to your business operations.
How do you determine whether a commercial roof needs repair or full replacement?
Our team performs a thorough assessment of the damage before recommending any course of action. If repairs will stop leaks and keep your building dry for years to come, we will recommend repairs rather than replacement. We only recommend roof replacement when repairs are no longer a practical or cost-effective solution. We know how tight budgets can be, and we never recommend more work than is necessary.
What types of commercial roofs does GSM Roofing repair?
We repair virtually all commercial roof types, including single-ply membranes (TPO, EPDM, PVC), built-up roofing, shingle, slate, tile, metal, and cedar. With nearly 80 years of experience, our team has the expertise to work with any roofing system.
What are the most common causes of commercial roof leaks?
The most common causes of commercial roof leaks include blocked drains or gutters, aging and weathering of roofing materials, blistering and cracking from UV and weather exposure, damaged or deteriorating flashing around edges and vents, membrane punctures and tears from debris or foot traffic, poor installation or past repairs that did not meet standards, and ponding water on flat roofs that leads to membrane deterioration.
Can you repair my roof without disrupting my business operations?
Yes. Minimizing disruption to your business is a priority for our team. We will assess the situation, communicate the plan clearly, and work efficiently to complete repairs as quickly as possible. For urgent situations, our 24/7 emergency service means we can respond at any hour, including nights and weekends.
Does GSM Roofing work with my insurance company on roof repair claims?
We can work alongside your insurance process to document damage and provide the information needed to support your claim. Maintaining records of regular inspections and repairs also strengthens future claims by demonstrating that the roof has been properly maintained.
How can I prevent costly commercial roof repairs in the future?
The most effective way to avoid unexpected and expensive repairs is to invest in a preventive maintenance plan. Regular inspections catch small problems before they become large ones, extend the life of your roof, and help you budget predictably rather than facing surprise repair costs. GSM Roofing’s Exceptional Roof Protection Plan includes biannual inspections, debris removal, a guaranteed leak response within two business days, and a reduced labor rate for any repairs needed outside the scope of the plan.

