Single-Ply Systems

We feature two main single ply offerings: PVC and TPO

Typical TPO or PVC mechanically attached roofing system

TPO and PVC Single Ply Roofing Systems

While there are many different types of single ply membrane systems in the marketplace today, we recommend two main types, TPO and PVC. We feel these two systems are the most reliable, and at the sametime, cost effective. The choice usually comes down to the customer's preference and current market conditions. Both are ENERGY STAR® qualified, CRRC rated, help meet LEED initiatives and meet California Title 24 cool roof requirements. Now lets compare:

TPO (thermoplastic polyolefin) membranes are a blend of polypropylene and ethylene propylene polymers and usually are reinforced with polyester. TPO sheets contain colorant, flame retardants, UV absorbers and other proprietary substances to achieve desired physical properties

If you are looking for a cost-effective and durable single-ply roofing system for your flat or low-slope roof, a TPO (thermoplastic olefin) membrane may be a solid, cost-effective option.
TPO roofs are manufactured to meet a variety of needs and design specifications. They are available in white, light gray, and black colors. White TPO roofs offer the best heat reflective properties are are consequently the most popular choice due to their energy-saving potential.
TPO roofs are durable; resisting dirt, bacteria, algae and debris build-up. The flexibility of the membrane makes it highly resistant to tears, punctures and impact damage. This flexibility also allows for a building’s movement and setting, without compromising the roof’s performance. Moreover, a TPO roof can withstand damaging ultraviolet, ozone and chemical exposure. Hot-air welded seams are very strong, with seam strengths being as much as 3-4 times greater than EPDM adhesive and tape seams.
TPO membranes are considered to be a cool roof and is Energy Star rated. This means that the membrane reflects the sun’s ultraviolet rays. This can significantly lower HVAC costs and make the interior temperature more comfortable during hot summer months.
TPO is environmentally friendly and one of the few 100% recyclable roofing materials available. The membrane can be fully recycled and used again in the TPO manufacturing process; the ground up “rework” gets incorporated into the bottom ply of a brand new TPO membrane.

~ASTM International

PVC membranes typically are reinforced with polyester or glass-fiber mats or scrim. Sheets contain plasticizers and stabilizers, as well as other additives to impart flexibility and achieve other desired physical properties. Some membranes are available with nonwoven fleece backing adhered to the underside of a sheet.

A few key benefits are strength, durability, resistance to moisture, wind, fire and chemicals. They are also, Eco-friendly (green) systems.
PVC roofs are specifically engineered for strength, ensuring the membrane’s long service life. The American Society of Testing and Materials (ASTM) requires a roofing membrane to have a minimum breaking strength of 200 pounds per inch. PVC roofing membranes far surpass this standard, all having a minimum breaking strength of 350 pounds per inch.
The feature that makes PVC roofing membranes exceptionally durable is heat – welded seams. They form a permanent, watertight bond that is actually stronger than the membrane itself.
Exceptional durability and strength lend themselves to a long service life. A properly installed, high quality PVC roofing membrane can last in excess of 20 years.
With a PVC roof, commercial buildings, such as manufacturing facilities, will not face roofing problems that result from exposure to chemicals, as PVC is highly resistant to chemical damage. Moreover, animal fat from grease vents on restaurants may cause damage to asphalt -based roofs and other single-ply roofing membranes, but will not have a negative impact on a PVC membrane.
PVC roofing membranes have a solid fire-resistance rating. These roofs are difficult to ignite, burn slowly, do not support combustion, and self extinguish when the source of flame is removed. PVC roofing membranes have passed FM and UL fire testing, and have an unlimited slope approval.
PVC membranes are manufactured to remain watertight in extreme conditions. The membrane stands up to constant dampness, ponding water, as well as high and low alkaline conditions. Also, exposure to plant roots, fungi and bacteria have no negative impact on a PVC roofing membrane.
There are many environmental benefits associated with PVC roofing membranes. Notably, the membrane’s high solar reflectivity reduces energy waste, lowers monthly heating and cooling costs, and helps mitigate the heat island effect in urban areas. Moreover, vinyl is one of the few building materials that can be fully recycled into new roofing products, even after decades of service life.