Specification

M O I S T O P P F F L A S H I N G
SPECIFICATION SUMMARY: Provides window and
door concealed perimeter flashing system,
including integration with weather-resistive
barriers, to provide secondary weather
protection behind exterior cladding.
FLEXIBLE WINDOW & DOOR FLASHING: Fortifiber/
Moistop PF Flashing multi-layer composite
employing heavy-duty woven polypropylene
fabric coated on both sides with ultraviolet-
resistant polypropylene.
Call 1-8OO-
773
-
4777
or 1-
775
-
333
-6
4
OO for sales and technical assistance. On the Internet visit www.fortifiber.com.
© 2014 Fortifiber Building Systems Group. Fortifiber®, FortiShield®, Moistop PF®, Moistop® Sealant and Protecting Your World from the Elements® are trademarks of Fortifiber Corporation. 3/14
Table 1- Physical Properties
Water Vapor ASTM E-96-A < 0.02 Perms < 0.57 Perms
Permeance ASTM F-1249
Water Resistance ASTM D-779 > 130 hours 24 hours
Tensile Strength ASTM D-882 MD - 107 lb.
f
/inch MD - 20 lb.
f
/inch
CD - 76 lb.
f
/inch CD - 20 lb.
f
/inch
Trapezoidal Tear ASTM D-4533 MD - 51 lb.
f
/inch n/a
CD - 41 lb.
f
/inch
Mold Growth ASTM G-21 0 Fungal Growth n/a
CHARACTERISTIC TEST METHOD RESULTS INDUSTRY STANDARD
Product Description: Moistop PF Flashing is a superior
flexible flashing designed to prevent incidental moisture
intrusion around windows and doors.
Composition: Moistop PF is a strong multilayer composite
of heavy-duty woven polypropylene fabric, coated on both
sides with ultraviolet-resistant polypropylene.
Size & Weight: Moistop PF is supplied in convenient
6", 9", 12" and 18" widths by 300' long rolls. Weight is
approximately 3.75 lbs (6"), 5.6 lbs (9"), 7.5 lbs (12") and
11.25 lbs (18") per roll. Thickness is 6 mils.
Applicable Standards: American Society for Testing &
Materials (ASTM)
• ASTM D-779 - Standard Test Method for Water Resistance of
Paper, Paperboard and Other Sheet Materials by the Dry
Indicator Method
• ASTM D-882 - Standard Test Method for Tensile Properties of
Thin Plastic Sheeting
• ASTM D-4533 - Standard Test Method for Trapezoid Tearing
Strength of Geotextiles
• ASTM E-96 - Water Vapor Transmission of Materials
• ASTM F-1249 - Water Vapor Transmission Rate Through
Plastic Film and Sheeting Using a Modulated Infrared Sensor
• ASTM G-21 - Standard Practice for Determining Resistance
of Synthetic Polymeric Materials to Fungi
Physical Properties: Moistop PF is continually tested in
accordance with ASTM procedures. The values shown in
Table 1 are averages obtained in these tests. Complies with
ASTM E-2112.
Limitations: Moistop PF should not be installed
horizontally or at a slope of less than 60°. The product
should be covered as soon as possible. Inspect product to
insure it is free of any protrusions or damage which may
compromise its moisture-resistive properties.
Installation: For optimum performance, Moistop PF
should be installed in conjunction with Moistop Sealant as a
component of the Moistop Flashing System. In a typical
window installation, Moistop PF is first applied at the sill and
jambs of window openings. Moistop Sealant is applied to
window flanges and windows are installed. Sealant is then
applied continuously along the face of window head
mounting flange, and Moistop PF is embedded in the sealant
along the head of the window. For complete installation
instructions, contact our Technical Assistance at
1-800-773-4777 or download them from our website at
www.fortifiber.com.
Availability: The Fortifiber Building Systems Group’s
products are distributed nationwide. For product information
and pricing, please call a Fortifiber distributor near you. If
you need assistance locating a participating distributor, please
call our customer service department at 1-800-773-4777.
Fortifiber Warranty: Fortifiber Corporation warrants that its
products are in compliance with their published specifications
and are free from defects in materials and workmanship for a
period of two years from the date of purchase. This warranty
does not apply to loss due to abuse. Material found to be
defective will be replaced at no charge by Fortifiber, but in no
event shall Fortifiber be liable for any other costs or damages,
including any labor costs.
THIS EXPRESS WARRANTY IS GIVEN IN LIEU OF
AND EXCLUDES ALL OTHER EXPRESS OR
IMPLIED WARRANTIES, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. Fortifiber’s sole obligations
under this warranty are as set forth herein. In no event shall
Fortifiber be liable for any lost revenue or profits, direct,
indirect, special, incidental or consequential damages of any
kind.
This product may be eligible for Fortifiber’s FortiShield 10
year warranty when used in conjunction with other Fortifiber
products. Please see our website at www.fortifiber.com/
warranty.htm for details.
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