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Is TTR Better Than Spray Polyurethane Foam Roofing?

Many contractors point to tri-thermal roofing as the rational evolution of spray polyurethane foam. It uses two layers of roofing-worthy material and spray polyurethane foam, acting as a sandwich that is nearly impermeable. On the other hand, many property owners still find spray polyurethane foam roofing a faster and viable option for most of their roofing issues. Here is a direct comparison between TTR and SPF, and how to learn which one is better.

What is Spray Polyurethane Foam Roofing?

Spray polyurethane foam (SPF) is foam material that liquefies during manufacturing and gains density and mass as it cures. Currently, it is one of the many famous commercial roofing available because it is affordable, greatly portable, and easy to use and apply on roofs and as insulating material


Open and closed-cell requires a clean, dirtless, and uncontaminated roofing material to adhere and cure properly. Applicators can proceed with spraying the roofing material, allowing the liquid foam to seep through the cracks and imperfections of the surface or former roofing material, Once the liquid cures, it has grown 20 times in size, has solidified, yet remains lightweight but highly resistant against water and hailstones.


SPF is a complex material that requires installations under clear skies with adequate heat. Many SPF projects often get delayed because of strong storms, hot summers, and autumn winds. In addition, SPF applications require the best applicators that have in-depth experience and the right equipment to achieve the roofing results you need.

What is Tri-Thermal Roofing?

As we’ve explained above, TTR uses two single-ply roofing materials while sandwiching an SPF sandwich layer in between. Commercial roofers will install the first single-ply roofing material across the roof. Once it has adhered, they will apply SPF on the initial roofing material and wait for it to cure. Within a few days, they can start adhering the last single-ply roofing material layer, creating a UV-repellent, durable, and long-lasting roofing layer.


TTR has massive density but has half the weight. TTR installation teams won’t need to tear off your aged roof. Additionally, its special single-ply membrane component doesn’t need fasteners and uses high-quality adherence to further reduce weight. Plus, the expanded SPF between the two layers improves their density, introduces excellent interior insulation, and lasts for decades.


TTR is more expensive than SPF because it uses two membranes and a sandwiched SPF in between them. While they’re lightweight, they may require additional support if the old roof and its support structure has already weakened due to severe wear.

Which One to Choose For Your Roof?

We highly recommend deferring to your commercial roofing to find out whether SPF or TTR is better for your roof. As SPF applicators, we recommend TTR if you frequently face hailstorms because it has a higher impact resistance rating than exposed SPF and the membrane is easy to replace. On the other hand, SPF is much more affordable and easy to repair after hailstorms.

If you need excellent SPF applications for your commercial roof, you can always count on us at Ener Spray to provide you with the best solutions. Contact us today to learn more about everything that we can do for you.