Single-ply membranes are complete roofing systems. Made from rubberized materials, these systems come in rolls that are chemically or mechanically attached to your existing roofing structure.
After they are rolled out, the seams are either chemically “glued” together or are heat welded, forming a virtually seamless single layer.
The value is in that seamless, waterproof nature. Since seams are the most common point of failure, by eliminating the seam, you reduce leaks substantially.
Additionally, many of these membranes come with an increased reflectivity built in. This “cool roof” concept can reduce the costs of cooling your building by 30% or more, while adding years of additional lifespan.
PVC, or polyvinyl chloride, is a surprisingly strong, durable material for your single-ply system. With a breaking strength of 350 pounds per square inch, it greatly exceeds the ASTM (American Society of Testing and Materials) standard of 200 pounds per square inch.
PVC offers excellent protection against water leaks and is resistant to chemicals, UV and fire.
With its reflective nature, PVC is frequently utilized in “cool roof” technology and may be Energy Star certified, depending on manufacturer.
TPO, which is short for thermoplastic polyolefin, offers excellent performance at a very cost-effective price.
The heat-welded seams provide for improved strength and durability.
TPO’s long-term heat, UV, and fungal resistance, and flexibility without the need for plasticizers make TPO a reliable low-slope roofing system option.
EPDM is an extremely durable synthetic material and stands for ethylene propylene diene terpolymer.
A good choice for many low-slope roofs, EPDM comes in 45 and 60 mil thicknesses. The seams are most frequently sealed with liquid adhesives or specialized tapes.
EPDM is better known as “rubber roofing” and provides for excellent waterproofing capabilities and long-term durability.