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Single-Ply Membrane Roofing: TPO vs EPDM

Single-Ply Membrane Roofing: TPO vs EPDM


(upbeat instrumental pop music) – Hi, my name is Ron Perdue
with West Roofing Systems. I’m a sales technician here, and today we’re talking about
single-ply membranes. (upbeat instrumental pop music) A EPDM roof is a rubber
membrane that is put together in the same fashion as a TPO membrane. Just different products, different process of putting them together. A TPO roof is a thermoplastic membrane that’s manufactured in different layers with
scrim in between it that is chemically bonded together
to create a roof system. (upbeat instrumental pop music) As far as the pricing on the single-ply membranes, with the EPDM systems, you’re going to run anywhere from $3 and up, and that all depends on the scope of work that you’re doing. Whether you’re removing the existing roof, if you’re just laying a cover board, the amount of penetrations that are on the roof, there’s a lot of variables that come into the
pricing for your project. This would also be the
exact same on a TPO roof. You’re going to be in
the $3.50 to $3 and up per square foot as an
industry average to install this system, based on your scope of work. (upbeat instrumental pop music) EPDM has been around for 60-some years. TPO has been around for 20 years. But, before, it only used to
be EPDM that was available. So now with TPO, it’s gaining strength. And it makes up probably 60%, when EPDM used to, you know, be that 60%. (upbeat instrumental pop music) With your TPO system, you’re
gonna have a white membrane, which is reflective of the sun. With a EPDM roof is a dark membrane, which is going to absorb that heat. (upbeat instrumental pop music) As far as the installation
on the single-ply membranes, with a TPO membrane, basically
your sheets are overlapped three to four inches onto each sheet. And it’s, on a TPO, it’s chemically or hot air-welded together with a machine that runs down that seam, heats the membrane up to a pliable surface
to adhere to itself. With a EPDM roof, the overlap is exactly the same on the sheet. And then you’re going
to install a seam tape, and a release paper on that, which basically folds back
over and you roll that seam together as a chemical bond thataway. (upbeat instrumental pop music) The typical lifespan of a single-ply membrane is the case
of a couple variables. Depending on the thickness
of the membrane that you’re installing, if you’re using
a 45 mil membrane, it’s going to be your typical ten
year to 15 year warranty. Once you move up to a 60 mil membrane, it’s going to be your 15
to 20 year warranties. And then the 90 mil is going to be your higher-end, 25, 30 year warranties. (upbeat instrumental pop music)

Comments (1)

  1. Very well done video!

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