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Fact or Fiction
Fiction: Polyurethane may be hazardous to health
Fact: Polyurethane is a material that has been proven safe again and again. A study reported in the
Journal of the American Medical Association (Vol. 245, No. 3) reported that polyurethane foam is
fully cured before being used in construction, and that fully cured polyurethane panels present
no bleed-off of toxic products. The study further stated that there were no reports of toxicity
occurring to people in homes insulated with polyurethane. Simply put: you can use our panels with confidence.
Fiction: The R-value in Thermocore panels is not stable.
Fact: Independent tests have confirmed time and time again that Thermocore panel R-values remain
constant. In fact, Thermocore sends aged panels out to be tested on an annual basis. All of our
panels are tested in accordance with ASTM C518 and are done in a laboratory setting. Our most
recent test on a panel in excess of three years old confirmed no loss of R-value. Studies at
Oak Ridge National Laboratories on various panels made with polyurethane foam cores
confirmed no measurable loss of R-value. Polyurethane foam continues to be the product of
choice for refrigerators, freezers, water heaters, coolers and many other common household
products. If polyurethane lost most of it's R value why would companies like GE continue to use it?
Fiction: Polyurethane panels collect moisture.
Fact: Polyurethane is so resistant to moisture that it serves as its own vapor barrier,
unlike EPS and other materials that require the addition of a separate vapor barrier.
In addition, polyurethane foam does not promote the growth of mold. That means you're assured of
a drier, healthier home.
Fiction: Panels aren't as sturdy as stick-built construction.
Fact: Thermopanels use the same construction principles found in steel I-beams, making them
two to three times stronger than today's stick built walls. The foam core and the two skins
form an I-beam matrix that is extremely strong and lightweight. Unique tongue and groove joints
locks the entire house together, making it a structural system rather than separate wall sections.
Fiction: Thermocore panels contain formaldehyde
Fact: NO, Thermocore panels do NOT, nor have they ever contained formaldehyde.
Fiction: Thermocore panels contain CFC's
Fact: Thermocore Panels do NOT contain any CFC's
Fiction: Thermocore Panels outgass.
Fact: Thermocore panels have never been connected with off-gassing and have never been
labeled a breathing or health hazard. A clinical study done by physicians that appeared in the
January 1981 issue of The Journal of The American Medical Association studied this very issue.
The study focused on structural insulated panels used in residential construction. The results
of this study showed that structural insulated panels used in residential construction "present
no bleed-off of products" and further stated that they could find "no knowledge of toxicity to
occupants of polyurethane insulated houses." The facts and the science are very clear here.
Thermocore Panels do not present a health risk! Period. If you are hearing or reading differently,
you need to consider the source or ask for the science to back up these claims.
Fiction: Polyisocyanurate (Polyiso) and Polyurethane are the same.
Fact: Polyiso and polyurethane are two distinctly different chemicals and are classified
as such by the Federal Government. Although the two are both used as building insulation,
they are as different as Chevrolet and Cadillac. Be sure that the information you are reading
applies to Polyurethane and not Polyiso.
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