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Commercial buildings have different roofing needs than residential properties. Higher foot traffic, rooftop equipment, and larger spans require materials and installation methods designed for commercial applications.
Key Differences: Commercial vs. Residential Flat Roofs
Before choosing materials, understand what makes commercial flat roofing unique:
- Scale – Larger areas mean material costs matter more
- Foot traffic – HVAC maintenance requires walkable surfaces
- Penetrations – More vents, drains, and equipment mounts
- Code requirements – Stricter fire ratings and wind uplift standards
- Business interruption – Leaks cost more than just repairs
Top Commercial Flat Roof Systems
TPO Membrane
TPO dominates new commercial construction for good reason:
- Energy Star rated white surface reduces cooling costs
- Heat-welded seams create permanent bonds
- Excellent chemical resistance
- 20+ year warranties available
- Cost-effective for large areas
PVC Membrane
PVC roofing is the premium choice for demanding commercial environments:
- Superior resistance to grease, oils, and chemicals
- Best fire rating of any single-ply membrane
- Proven 30+ year track record
- Ideal for restaurants, manufacturing, and medical facilities
Modified Bitumen
Multi-layer asphalt systems offer proven commercial performance:
- Excellent puncture resistance for high-traffic roofs
- Self-healing properties in Florida heat
- Multiple application methods available
- Good for roofs with complex shapes
Built-Up Roofing (BUR)
Traditional multi-ply systems still make sense for some commercial applications:
- Redundant layers provide backup protection
- Gravel surface handles foot traffic
- Proven 50+ year track record
- Best for buildings that can handle the weight
Spray Polyurethane Foam (SPF)
Spray foam offers unique advantages for commercial properties:
- Seamless application eliminates leak-prone seams
- Superior insulation value (R-6.5 per inch)
- Self-flashing around rooftop equipment
- Can be applied over existing roofs
Coating and Restoration
Many commercial roofs can be restored rather than replaced. Silicone coatings and other restoration systems can:
- Extend roof life by 10-20 years
- Cost 50-70% less than full replacement
- Minimize business disruption
- Improve energy efficiency
Choosing the Right System
The best commercial roof system depends on your specific situation: building use, budget, existing conditions, and long-term plans. Contact us for a free commercial roof assessment and custom recommendation.
