Flex 180N User Manual
Product Data Sheet
FLEX 180N GEOTEXTILE
SEPARATION LAYER
PRODUCT DESCRIPTION
Flex 180N Geotextile is a non woven geotextile composed of polypropylene fibers, which are formed into
a stable network such that the fibers retain their relative position. Flex 180N Geotextile is inert to
biological degradation and resists naturally encountered chemicals, alkalis, and acids.
The Flex 180N Geotextile is installed as a separation or protection layer in Flex Protected Membrane
Roof Systems. It also is used as a protection layer and filtration fabric in Flex Garden Roof Systems and
Flex Below Grade Waterproofing Systems. The Flex 180N has excellent physical and hydraulic properties
in addition to high tensile strength. The Flex 180N provides the required strength and abrasion resistance
to protect Flex Thermoplastic Roofing and Waterproofing Membranes withstanding installation and
application stress to create an effective, long term solution.
PHYSICAL PROPERTIES
Property Test Procedure Specification
Thickness ASTM D 5199 .072”
Weight ASTM D 5261 8.0 oz/yd
Dimensions 15’x300’
Tensile Strength ASTM D 4632 205lbs x 205lbs
Tensile Elongation ASTM D 4632 50%
Tear Strength ASTM D 4533 80lbs x 80lbs
Mullen Burst Strength ASTM D 3786 350 psi
Puncture Strength ASTM D 4833 110 lbs
Apparent Opening Size ASTM D 4751 80 US Sieve
Permittivity ASTM D 4491 1.1 sec-¹
Permeability ASTM D 4491 0.21 cm/sec
Flow Rate ASTM D 4491 95 gal/min/ft²
UV Resistance (500 hrs) ASTM D 4355 70%
Disclaimer: Flex Membrane International Corp. assumes no liability for the accuracy or completeness of this information or
for the ultimate use by the purchaser. Flex Disclaims any and all express, implied, or statutory standards, warranties or
guaranties, including without limitation any implied warranty as to merchantability or fitness for a particular purpose or arising
from a course of dealing or usage of trade as to any equipment, materials, or information furnished herewith. This document
should not be construed as engineering advice.
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Flex Membrane International Corp. 2670 Leiscz’s Bridge Road, Suite 400, Leesport, PA 19533
Tel: (610) 916-9500 Fax: (610) 916-9501 www.FlexRoofingSystems.com
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