24-YEAR PROVEN PVC FORMULATION HISTORY

JOHNS MANVILLE & COOLEY GROUP
The Power of Two Companies With a Combined History of More Than 241 Years
24-YEAR PROVEN PVC FORMULATION HISTORY
Johns Manville (JM) and the Cooley Group have a unique strategic partnership. It
Did You Know?
allows us to offer a successful and proven PVC membrane with a 24-year history
HP is mainly promoted for cable jacket
in the market. The Cooley Group developed C3 with DuPont
KEE in
applications. However, it had a brief history
1988 and commercialized it in 1990. Shortly after launching, the naming evolved to
in the PVC roofing membrane market in the
C3Plus by adding a patented Aramid yarn edge along the fastener edge of all full
1990s. The formulation was sourced by a
rolls. The proprietary Elvaloy® KEE formulation, with proven real-world results, has
single manufacturer who is no longer in the
not once changed in its 24 years of production; despite the introduction of various
roofing membrane business.
™
Elvaloy
DuPont™ Elvaloy® KEE
®
grades or amounts of DuPont™ Elvaloy® KEE offered by other manufacturers.
(See cooleygroup.com/building-products)
Quick History: DuPont™ Elvaloy® KEE, a solid high molecular weight polymer, has
been in the market since 1973. It was developed as an alternative to liquid plasticizer
to improve the long-term performance of thermoplastic materials.
JM PVC - Testing, Data and Performance
Testing
In 2006, JM PVC (Cooley C3 Plus) was one of six membranes used to study chemical
resistance by Simpson Gumpertz & Heger (SGH).
A white paper citing this study was then published by Carl G. Cash, P.E., A. G. Davies,
Jr., D. L. Niles, and L. C. Carey titled “Chemical Resistance of Various Single Ply
“JM PVC (Cooley
C3 Plus) ranked the
highest for chemical
resistance.”
Roofing Membranes.” It states, “The PVC/KEE membrane is the most resistant to
the chemicals we tested.” JM PVC membrane came out on top with water, HVAC oil,
canola oil, 1 N acid, pH 11 base and kerosene.
Data
Accelerated Published Weather Data for PVC
It is critical to make sure that the reporting test methods and data are relevant to
45,000
and UV exposure to detect cracking, crazing or discoloration. ASTM G154 or ASTM
G155 requires a PVC roofing product to pass 5,000 hours. Third-party accelerated
weather testing reveals that JM PVC 60 mil has surpassed over 39,000 hours and is
still going!
35,000
Hours Tested
Accelerated weather testing for roofing membrane is conducted with florescent light
Still Going!
40,000
roofing and that the product has a proven real world track record.
30,000
25,000
20,000
15,000
10,000
ASTM Standard
5,000
0
JM PVC
50 mil
JM PVC
60 mil
Competitor Competitor Competitor
A
B
C
CRRC PVC SRI Comparison
Data (Cont.)
JM PVC made with Elvaloy
®
KEE has the same or better Solar Reflective
SRI Initial
Index (SRI) than other membranes as reported in the Cool Roof Rating Council (CRRC)
108
Manufacturer
Solar Reflectance
Thermal Emittance
Initial
Initial
3 year
3 year
Initial
75
0.00 0.00
3 year
0.86
0.70
0.86
0.82
108
84
Carlisle® Sure-Flex™ KEE
0.86
0.70
0.86
0.82
108
84
No Data
No Data
No Data
No Data
No Data
No Data
0.83
0.63
0.90
0.86
104
75
Sarnafil® S327
104
84
SRI
JM PVC
Carlisle® Sure-Flex™ KEE HP
108
84
(www.crrc.org) table below.
SRI 3 year
JM PVC
Carlisle® Sarnafil®
Carlisle®
S327
Sure-Flex™ Sure-Flex™
KEE
KEE HP
CRRC PVC Solar Reflectance Comparison
Solar Reflectance Initial
0.86
0.70
Solar Reflectance 3 year
0.86
0.70
0.83
0.63
0.00 0.00
JM PVC
Performance
A 40-mil, JM PVC fleece backed roof was installed with hot asphalt in 1992 in Alpine,
Utah. It was harvested in 2010 and put through the same rigorous ASTM testing
standards that our new membranes undergo. The results proved ultimate durability
in the harshest conditions, even on thinner membranes.
The comparison against ASTM requirements show this roof would pass, even after
Sarnafil®
S327
Thickness Over Scrim
1
Thickness over scrim
2 Scrim
3 Thickness under scrim
4 Fleece back in asphalt
more than 18 years.
Test
Method
ASTM D4434
Requirements
Johns Manville
50 Mil
Fleece Back
Thickness,
min, in.
ASTM D751
±10% from
Nominal
(Membrane
only Nominal)
Thickness
OverScrim,
min, in.
ASTM D7635
0.016
Low
Temperature
Bend, °F
ASTM D2136
Pass
Tested Physical
Properties
Carlisle®
Carlisle®
Sure-Flex™ Sure-Flex™
KEE
KEE HP
Exposed
40 Mil
Sample Avg.
Unexposed
40 Mil
Sample Avg.
0.040
0.043
0.020
0.0187
0.0191
Pass @ -40
Pass @ -40
Pass @ -40
0.050
18 mil after 18 Years!
2
1
3
4
JM PVC meets the
required ASTM D2136
low temperature bend
at -40°F.
Installation of any roofing system in subzero temperatures could bring additional
challenges, lacking sufficient thermal energy
for heat-welding, adhesive restrictions and
overall personnel working conditions.
Carlisle and Sure-Flex are trademarks of Carlisle.
Conclusion
In roofing, time is the great equalizer. JM’s PVC has worked for more than 24 years in
all U.S. climate conditions, with no membrane degradation failures. Accelerated testing
and promise of performance is no match for a 24-year proven history. Think about the
consequences of a roof leak or roof failure in your building or operation. Yes, it will get
fixed eventually, but think about the disruption. Are you willing to take this risk?
• With JM PVC, there has been more than 600 million square feet of installed PVC
going back 24-plus years in real world conditions.
More than 600
million square feet of
installed PVC going
back 24-plus years in
real world conditions.
• Johns Manville is a 150+ year old company financially backed by Berkshire Hathaway.
• Our partnership with the Cooley Group provides a unique opportunity to share best
practices, while having the ability to sell a proven product.
Salt River Baseball
Field at Talking Stick
Scottsdale, AZ
717 17th St.
Denver, CO 80202
(800)922-5922
www.jm.com/roofing
RS-8958
4-14 (New)

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