If you’re looking for the best membrane roofing system for your commercial roof, this article provides an in-depth look at TPO and PVC roofing materials with the pros and cons of each, as well as the types of buildings they’re best suited for.
TPO (thermoplastic polyolefin)
TPO is one of the most common commercial roofing materials. It’s comprised of three layers: a synthetic rubber base, a reinforcing scrim or fabric, and a thermoplastic polyolefin top layer. Several additives are included in the material, including UV inhibitors, pigment, flame retardants, and biocides to help fight mold, bacteria, and pests. TPO comes in thicknesses of 45, 60, and 80 mil. The seams between rolls are heat-welded, which is stronger than taped or glued seams. It can be attached to the roof deck with fasteners, adhesive, or low-rise foam.
The membrane is naturally white in color, reflecting UV light and heat, which helps keep the interior of your building cooler, reduces energy use, and saves owners money.
The average lifespan of a TPO roof is 15-30 years, provided it receives regular maintenance and cleaning. Warranties protect your investment for 20-35 years, depending on the product and thickness of the membrane.
When compared to PVC membrane roofing, TPO is a more economical choice, as the product and installation costs are generally lower.
Pros
Durable, flexible material
Resistant to mold, mildew, fungus
Easily repaired or patched
Can be treated for fire resistance
Performs better in cold (down to -50°F)
Economical choice
Cons
Debris can puncture membrane, causing leaks
Resistant to mold, mildew, fungus Breaks down when exposed to grease, oil, fats
Best used for office and retail buildings
PVC (polyvinyl chloride)
PVC roofing consists of two layers of polyvinyl chloride with a polyester reinforcement scrim sandwiched between them. It’s fire-resistant without the need for additives and is known for its durability against extreme weather, chemicals, and foot traffic. PVC is installed similarly to TPO and can be mechanically fastened or glued to the roof deck. It comes in a range of thicknesses, like TPO.
PVC is also available in light colors, which helps reduce the need for cooling and saves on energy costs.
PVC roofing resists grease and animal fats better than TPO, which often breaks down in the presence of these or other chemicals. Because of this, it’s often used in restaurants and buildings with hood vents, as well as in industrial buildings. Its durability also makes it a good choice in regions that receive a lot of sun, rain, or snow.
Initially, a PVC roof costs more, but it has a longer life expectancy, 20-30 years with regular maintenance. Warranties typically run for 25 years.
Pros
Fire, chemical, and cold-resistant
Resists grease and animal fats
Durable and flexible
Easily repaired
Cons
Higher initial cost
Best for restaurants, food service, industrial, airport, and manufacturing facilities
If you have additional questions or need assistance selecting roofing material for your commercial building, contact our team, and they’ll be happy to help.
Choosing the roofing material for your building is a key decision in determining the longevity of your facility. With so much at stake, you want to ensure you’ve selected the right material for your use and the local climate. No matter which roofing system you choose —TPO, PVC, or something else —our experts will ensure that you receive the best quality installation available.