AT A GLANCE

• Cost: $$
• Lifespan: 10-20 years
• Color Options: Typically white, tan, or gray
• Composition: Polyvinyl Chloride
• Advantages: Lightweight. Low maintenance. Monolithic covering. High UV, ozone, and chemical resistance. Superior resistance to animal fats, restaurant oils and grease. Membrane flexibility. Fire resistant. Energy Star Certified. Performs with ponding water.
• Disadvantages: Less resistance to punctures. More difficult to repair as it ages.

Polyvinyl Chloride (PVC) membranes are composed of three layers — a strong polyester reinforced fabric sandwiched between two layers of PVC polymer plies. They are available in thicknesses ranging from 45-80 mils.

INSTALLING PVC ROOFING

PVC can be loosely laid, fully adhered, or mechanically attached:

• Loose Laid: Ballast, such as river rock or pavers, are used to hold the membrane in place.
• Fully Adhered: The membrane is glued in place using commercial grade adhesives rolled on both the backside of the membrane and the substrate.
• Mechanically Attached: Screws and plates are used to hold the membrane in place. This approach is recommended because it prevents water migration under the membrane in case of a puncture.

INSTALLING TPO ROOFING

TPO can be loosely laid, fully adhered, or mechanically attached:

• Loose Laid: Ballast, such as river rock or pavers, are used to hold the membrane in place.
• Fully Adhered: The membrane is glued in place using commercial grade adhesives rolled on both the backside of the membrane and the substrate.
• Mechanically Attached: Screws and plates are used to hold the membrane in place. This approach is recommended because it prevents water migration under the membrane in case of a puncture.