On the other hand polyvinyl chloride pvc and thermoplastic polyolefin tpo two other common roofing systems for commercial buildings fall in the second category.
Thermoplastic roof membranes.
This membrane is best recognized for having the benefits of epdm and pvc systems at a more economical cost.
Tpo is durable enough to resist punctures and flexible enough to stretch as the structure settles.
There are several ways of connecting pieces of this material.
It is made from asphalt and a variety of rubber modifiers and solvents.
The most common thermoplastic membranes are pvc polyvinyl chloride and tpo thermoplastic polyolefin.
An example of thermoset membranes includes ethylene propylene diene monomer epdm one of the most widely used roofing systems.
The tpo membrane was first introduced to the roofing market in the early 1990 s as a more economical and efficient alternative that was thought to replace pvc roofing products.
Tpo is a single ply roofing system that consisting of a thermoplastic polyolefin membrane.
It maintains its integrity throughout a wide range of thermal expansion and contraction.
This membrane is composed of three layers.
Since they are new long term performance is unknown at this time.
Epdm an example of thermoset roofing membranes.
The heating process can usually be repeated as needed.
Tpo membranes are made with a co polymerized rubber that allows them greater flexibility in cold climates.
Modified bitumen this type of roofing is an evolution of asphalt roofing.
A tpo roof costs between 5 50 and 9 50 per square foot.
The following provides general descriptions of these two systems.
Tpo membranes are white and highly reflective making them an excellent choice for those looking to reduce energy costs.
Tpo thermoplastic polyolefin is a single ply reflecting roofing material or membrane made out of ethylene propylene rubber and polypropylene polymerized together.
Thermoplastic polyolefin tpo shall only be allowed on roofs with an anticipated life of 10 years or less.
Tpo roofing is usually installed mechanically attached or fully adhered systems.
Tpo membranes are a relatively new roof membrane and have seen several reformulations in the past decade.
Thermoplastic membrane roofing becomes soft when heated then hardens and binds when cooled.
Unlike sarnafil which is formulated to perform above and beyond the industry standard sikaplan is formulated to the industry standard like the rest of the thermoplastic roofing membranes on the market.
An asphalt roof costs between 8 and 10 per square foot installed.
