What PVC Thickness Is Recommended for Florida Commercial Roofs?
For Florida commercial buildings, 60-mil PVC roofing membrane is a common recommended starting point, while 80-mil PVC may be a better choice for roofs exposed to severe weather, heavy foot traffic, or demanding long-term performance requirements. The right thickness depends on the building, roof design, local wind requirements, existing deck, insulation, installation method, and expected service life.
PVC, or polyvinyl chloride, is a single-ply roofing membrane widely used on commercial and low-slope roofs. It provides strong resistance to water, chemicals, punctures, and UV exposure. These characteristics make PVC roofing well suited to Florida’s hot, humid, and storm-prone climate.
Is 60-Mil PVC Enough for a Florida Commercial Roof?
60-mil PVC is often an appropriate choice for many Florida commercial roofing projects. It provides a balance between durability, performance, and installation cost. A properly installed 60-mil membrane can provide reliable protection against Florida’s intense sunlight, heavy rainfall, and normal rooftop activity.
However, membrane thickness should not be selected based only on price. A commercial roof in Florida may experience strong winds, flying debris, thermal expansion and contraction, ponding water, and frequent maintenance traffic. These conditions can make a thicker membrane more appropriate.
When Should You Consider 80-Mil PVC?
An 80-mil PVC membrane can provide additional durability for commercial properties where long-term performance is a priority. The thicker membrane can offer greater resistance to punctures and physical damage compared with thinner options.
80-mil PVC may be worth considering when a building has:
- High rooftop foot traffic
- Frequent HVAC maintenance
- Equipment requiring regular service access
- Greater exposure to severe weather
- A long expected roof service life
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Commercial Roof Replacement / Re-Roofing
