Reinforced Thermoplastic Polyolefin (TPO) Roofing Membrane
Common Product
MasterFormat 07 50 00 Membrane Roofing; 07 54 00 Thermoplastic Membrane Roofing; 07 54 23 Thermoplastic-Polyolefin Roofing

This information reflects our best understanding of product composition in 2021.

Thermoplastic polyolefin (TPO) membranes are a type of single-ply roofing membrane that are commonly made up of two layers of TPO surrounding a woven polyester reinforcing layer, or scrim. While specific chemistry of the TPO polymer may vary...

More about Reinforced Thermoplastic Polyolefin (TPO) Roofing Membrane

Thermoplastic polyolefin (TPO) membranes are a type of single-ply roofing membrane that are commonly made up of two layers of TPO surrounding a woven polyester reinforcing layer, or scrim. While specific chemistry of the TPO polymer may vary between products, they are block copolymers that have a combination of rigid and elastic blocks to provide both thermoplastic and elastomeric properties. The polymers are composed of segments of polypropylene and one or more additional polymers such as ethylene propylene, linear low density polyethylene (LLDPE), or EPDM rubber. Typical additives include UV stabilizers, antioxidants, and pigments. TPO roofing membranes also require flame retardants. While halogenated flame retardants are not common, they could be used in some products. TPO membranes typically do not contain any plasticizers. TPO membranes are usually sold in thickness of 45, 60, and 80 mil sheets and may include up to 15% post-industrial scrap recycled back into the membrane. Similar to other types of single-ply roofing membranes, they are sold in rolls which are applied via mechanical fasteners, site- or factory-applied adhesives, or loose laid with gravel. Membrane seams are heat welded and edges are sealed using tapes or sealants.

A historical version of this Common Product is available here: https://pharosproject.net/common-products/2214443

Name % Wt Whole Function GS Score Sources
Ethene, polymer with 1-propene
9010-79-1
71.31% Polymer Subscribe to view
Magnesium hydroxide
1309-42-8
13.97% Flame Retardant, Filler Subscribe to view
Titanium dioxide
13463-67-7
3.78% Pigment Subscribe to view
Tris(2,4-di-tert-butylphenyl) phosphite
31570-04-4
1.06% Antioxidant Subscribe to view
Irganox 1010
6683-19-8
1.01% Antioxidant Subscribe to view
Butanedioic acid, 1,4-dimethyl ester, polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol
65447-77-0
0.96% UV Stabilizer Subscribe to view
Calcium stearate
1592-23-0
0.96% Lubricant Subscribe to view
Carbon black
1333-86-4
0.67% Pigment Subscribe to view
Polyethylene Terephthalate (PET)
25038-59-9
6.24% Polymer Subscribe to view
Titanium dioxide
13463-67-7
0.02% Pigment Subscribe to view
Irganox 1010
6683-19-8
<0.01% Antioxidant Subscribe to view
ANTIMONY TRIOXIDE
1309-64-4
<0.01% Residual Catalyst Subscribe to view
Name % Wt Part % Wt Whole Function GS Score Sources
TPO Sheet Membrane
93.74% 93.74% Structure Component Subscribe to view  
Ethene, polymer with 1-propene
9010-79-1
76.07% 71.31% Polymer Subscribe to view
Magnesium hydroxide
1309-42-8
14.91% 13.97% Flame Retardant, Filler Subscribe to view
Titanium dioxide
13463-67-7
4.04% 3.78% Pigment Subscribe to view
Tris(2,4-di-tert-butylphenyl) phosphite
31570-04-4
1.13% 1.06% Antioxidant Subscribe to view
Irganox 1010
6683-19-8
1.08% 1.01% Antioxidant Subscribe to view
Butanedioic acid, 1,4-dimethyl ester, polymer with 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol
65447-77-0
1.03% 0.96% UV Stabilizer Subscribe to view
Calcium stearate
1592-23-0
1.03% 0.96% Lubricant Subscribe to view
Carbon black
1333-86-4
0.72% 0.67% Pigment Subscribe to view
Polyester Scrim in Single-ply Roofing Membrane
6.26% 6.26% Structure Component Subscribe to view  
Polyethylene Terephthalate (PET)
25038-59-9
99.56% 6.24% Polymer Subscribe to view
Titanium dioxide
13463-67-7
0.30% 0.02% Pigment Subscribe to view
Irganox 1010
6683-19-8
0.08% <0.01% Antioxidant Subscribe to view
ANTIMONY TRIOXIDE
1309-64-4
0.06% <0.01% Residual Catalyst Subscribe to view

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Known or Potential Residuals
Known or Potential Residuals for Chemical
CASRN NAME GS SCORE TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCE
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Other Process Chemicals
CASRN NAME GS Score TYPE FREQUENCY % WT CHEM % WT PRODUCT SOURCES
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HBN Resources (2)
HBN Resources for Product
TYPE TITLE
Discussion Carbon vs Chemicals
Template Manufacturer Product Disclosure Request Template
Sources
Sources for Common Product Data
Source Uploaded Document Linked Document
Al-Sabagh 2016
Barker 1975
Biver 2021
Campo 2008
Carlisle Sure-Flex EPD
Carlisle Thermoplastics
Carlisle TPO Membrane EPD
Carlisle US9163410B2
Cooley Group 2014
Dupont US4418116A
ECHA Plastics Additives
EverGuard TPO 45 mil TDS (2018)
EverGuard TPO 60 mil TDS (2018)
EverGuard TPO 80 mil TDS (2018)
EverGuard TPO Declare (2021)
EverGuard TPO EPD (2019)
EverGuard TPO HPD (2021)
EXXELOR PO 1020 SDS
Firestone US20180094439A1
Firestone US20210108418A1
Firestone WO2008094603A1
Firestone WO2015089384A1
Flat Roof Guide
Flex MF_R 50 TDS
Flex TPO 60 mil PDS
Flex TPO 80 mil PDS
GAF EverGuard EPD
GAF US9920515B2
GE US4758637A
Invista US5153164A
Irgafos 168 - BASF
Irganox1010_SDS
JM TPO TDS 45 mil (2018)
JM TPO TDS 60 mil (2021)
JM TPO TDS 80 mil (2021)
JM US10647839B2
Milliken Roofing
Milliken US10072419B2
Milliken US20040185734A1
Mule-hide EPD
Mule-hide TPO PDS
NSF_ANSI 347
Sarnafil G 410 EPD
SpecialChem_Irganox1010
SPRI News 20210716
SPRI TPO EPD
Sure-Weld Brochure
Sure-Weld TPO PDS (2020)
Sure-Weld TPO SDS 2020
Thiele Polyester Additives
Tinuvin 622 SF
Ullmann's Encyclopedia - Plastics, Additives
UltraPly TPO TIS