A Guide To TPO Roofing

Flat roofs and roofs with a relatively low slope have always needed something extra to improve their imperviousness to moisture. Because of the low gradient, water from rainstorm may not drain quickly enough from the roof. This can lead to a weakening of the roof in the long run.

To counter this problem, roofing membranes are usually added to serve as a barrier between the roof and the elements. There are different types of roofing membranes that you can use, but one that has been getting a lot of attention in recent times is TPO. What is TPO and should you consider it for your roof?

What is TPO?

The initials TPO stand for thermoplastic polyolefin and this is a type of single-ply roofing membrane that remains flexible at low temperatures. This membrane is made using state-of-the-art technology and doesn't contain any chlorine like PVC membranes.

To make the membrane better, other components are added to it during the manufacturing projects that make it more weather-resistant and fire retardant. The product is designed to survive the challenges that are brought on by exposure on the roof. Because the material is already flexible, plasticizers are not added to it during manufacture.

Advantages of TPO Roofing

TPO roofing has several advantages including:

  1. Inexpensive: Compared to many other roofing membranes, TPO is one of the cheapest solutions available in the market today. This makes it possible to install a reliable roofing membrane without breaking the bank.

  2. Energy Efficiency: Installing TPO can improve the energy efficiency of your building because the top side of the material is white. This top part is, therefore, able to reflect sunlight and heat, resulting in a cooler building interior during the summer.

  3. Durability: TPO isn't susceptible to corrosion and doesn't break down easily when in contact with certain materials.

  4. Mildew resistant: Both mildew and algae don't thrive on TPO. This means you won't have to spend money on regular pressure washing.

Disadvantages of TPO Roofing

The challenges of TPO roofing have more to do with the manufacturing than the material itself. There are different manufacturers that are currently producing TPO, and unfortunately, the quality of the product varies greatly from one manufacturer to the next.

The manner in which the material is manufactured also introduces more seams than is necessary. Seams can serve as a weak point. Talk to a roofing contractor and ask them which TPO manufacturer produces products they can trust.