How to Guide

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Mold And Mildew Resistance
PermaBase was designed to provide extra
protection against mold and mildew. When
tested by an independent laboratory,
PermaBase received the highest possible rat-
ings on ASTM G 21 and D 3273. The use of
PermaBase in actual installations may not
produce the same results as were achieved in
controlled laboratory conditions. No material
can be considered “mold-proof,” nor is it
certain that any material will resist mold or
mildew indefinitely. When used in conjunction
with good design, handling and construction
practices, PermaBase can provide increased
mold resistance. As with any building mate-
rial, avoiding water exposure during handling,
storage and installation, and after installation
is complete, is the best way to avoid the
formation of mold or mildew.
Technical Information
Phone: (800) NATIONAL
[phone]
Fax: (800) FAX-NGC1
[phone]
Corporate Headquarters
National Gypsum Company
2001 Rexford Road
Charlotte, NC 28211
Phone: [phone]
Web: nationalgypsum.com
111115 Rev. 6/15
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Atlantic Area
Phone: [phone]
Fax: [phone]
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Central Area
Phone: [phone]
Fax: [phone]
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Gulf Area
Phone: [phone]
Fax: [phone]
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Midwest Area
Phone: [phone]
Fax: [phone]
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Northeast Area
Phone: [phone]
Fax: [phone]
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Southeast Area
Phone: [phone]
Fax: [phone]
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Southwest Area
Phone: [phone]
Fax: [phone]
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Western Area
Phone: [phone]
Fax: [phone]
National Accounts
Phone: [phone]
Fax: [phone]
Manufactured Housing
Phone: [phone]
Fax: [phone]
CUSTOMER SERVICE SALES AREAS
Products manufactured and sold by National
Gypsum Company are warranted by National
Gypsum Company to its customers to be free
from defects in materials and workmanship
at the time of shipment. THIS EXPRESS
WARRANTY IS THE ONLY WARRANTY
APPLICABLE TO SUCH PRODUCTS, AND IS
IN LIEU OF AND EXCLUDES ALL OTHER
EXPRESS ORAL OR WRITTEN WARRANTIES
AND ALL IMPLIED WARRANTIES, INCLUDING
BUT NOT LIMITED TO THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE.
National Gypsum Company will not be liable
for any incidental, indirect or consequential
losses, damages or expenses. The customer’s
exclusive remedy for any type of claim or
action for defective products will be limited
to the replacement of the products (in the
form originally shipped) or, at National
Gypsum’s option, to a payment or credit
not greater than the original purchase price
of the products.
National Gypsum Company will not be
liable for products claimed to be defective
where the defect resulted from causes not
within National Gypsum’s control, or which
arose or occurred after shipment, including
but not limited to accidents, misuse, mis-
handling, improper installation, contamination
or adulteration by other materials or goods,
or abnormal conditions of temperature,
moisture, dirt or corrosive matter.
Any claim that products sold by National
Gypsum Company were defective or otherwise
did not conform to the contract of sale is
waived unless the customer submits it in
writing to National Gypsum within thirty (30)
days from the date the customer discovered
or should have discovered the defect or non-
conformance. No legal action or proceeding
complaining of goods sold by National
Gypsum may be brought by the customer more
than one year after the date the customer
discovered or should have discovered the
defect or problem of which it complains.
LIMITED WARRANTY AND REMEDIES