Commercial Flat Roof Experts Replace. Repair. Maintain.
From full tear-offs to emergency leak repair and preventive maintenance programs, Grant Roofs USA keeps your business protected under one licensed contractor.
Complete Flat Roof Tear-Off & Replacement
When patching and coatings are no longer enough, a full tear-off and replacement is the most reliable path to long-term protection. Our crews remove every layer down to the deck, inspect the substrate for rot or structural damage, and install a brand-new membrane system engineered for your building's specific load, drainage, and energy requirements.
We work with every major flat-roof material: EPDM rubber for proven durability, TPO for energy-efficient reflectivity, modified bitumen for heavy-traffic warehouses, and PVC for chemical-resistant environments like restaurants and manufacturing facilities. Each system comes with manufacturer-backed warranties of 15 to 30 years.
Our project managers coordinate every phase — permits, material deliveries, crew scheduling, and final inspections — so your business experiences the shortest possible disruption. Most commercial replacements are completed within one to two weeks, depending on square footage and weather.
Leak Detection, Patching & Seam Repair
Flat roofs are built to perform, but ponding water, failed seams, cracked flashings, and punctures from foot traffic or storm debris can compromise even the best systems. Our technicians use infrared moisture scans and core sampling to pinpoint damage without guesswork, so we fix the actual problem — not just the symptoms.
Common issues we resolve include open seams on single-ply membranes, blistering and alligatoring on built-up roofs, deteriorated pipe boots and curb flashings, and ponding caused by inadequate slope or blocked drains. Catching these problems early prevents interior damage, mold growth, and the far higher cost of a premature full replacement.
When a pipe bursts or a storm tears a section open, our 24/7 emergency response team is available to tarp, seal, and stabilize your roof within hours — protecting your inventory, equipment, and occupants until a permanent repair can be scheduled.
Call (239) 441-3642 any time for immediate response.
Scheduled Inspections & Maintenance Agreements
The most cost-effective roof is the one that never fails unexpectedly. Our commercial maintenance program provides bi-annual inspections, detailed condition reports, and minor repairs included in the agreement — all starting at $499 per year. Property managers and facility directors rely on this program to extend roof life, satisfy warranty requirements, and eliminate budget surprises.
Each inspection covers membrane condition, seam integrity, flashing health, drainage function, and any rooftop equipment penetrations. We document everything with photography and deliver a written report with prioritized recommendations, so you always know exactly where your roof stands.
Program Benefits
- Bi-annual comprehensive inspections with photo documentation
- Minor repairs and seam re-sealing included at no extra cost
- Priority scheduling — skip the queue when you need us
- Written condition reports for insurance and warranty records
- Debris and drain clearance to prevent ponding
- Extends membrane life by 5-10 years on average
- Early detection of problems before they become emergencies
Custom pricing based on roof size and number of penetrations.
Flat Roof Materials We Install
Every building has different needs. We help you choose the right membrane system based on your budget, building use, and long-term goals.
EPDM Rubber
- Proven 30+ year lifespan with proper maintenance
- Excellent resistance to UV, ozone, and temperature extremes
- Cost-effective single-ply membrane ideal for large flat areas
Modified Bitumen
- Multi-layer system provides superior waterproofing and redundancy
- Torch-applied or self-adhered options for varied conditions
- Excellent foot-traffic durability for rooftop equipment access
TPO Membrane
- White reflective surface reduces cooling costs up to 30%
- Heat-welded seams create a watertight monolithic bond
- Lightweight, recyclable, and increasingly popular for new construction
Roof Coatings
- Silicone and acrylic coatings extend existing roof life 10-15 years
- Applied directly over aging membranes — no tear-off waste
- Seamless finish eliminates leak-prone joints and penetrations
Industries We Serve
Our flat roof experience spans every commercial sector — from neighborhood retail to large-scale industrial facilities.
Why Choose Grant Roofs USA?
With over 50 years of experience and thousands of commercial roofs installed across the United States, our reputation is built on results you can stand on.
Licensed & Insured
Nationwide licensed, bonded and insured network
Commercial Specialists
Flat roof focus — not a sideline, our core business
Manufacturer Warranties
15- to 30-year NDL warranties from top membrane makers
24/7 Emergency Response
Rapid tarp and seal service when disaster strikes
Get a Free Roof Assessment
Enter your property address and our AI will analyze your roof from satellite imagery — cost estimate included.