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TerraTex® HPG-77

TerraTex® HPG-77 is a polypropylene woven fabric. This engineered geotextile is stabilized to resist degradation due to ultraviolet exposure. It is resistant to commonly encountered soil chemicals, mildew and insects, and is non-biodegradable. Polypropylene is stable within a pH range of 2 to 13, making it one of the most stable polymers available for geotextiles today. TerraTex® HPG-77 is manufactured to meet the following minimum average roll values:




All values provided are intended for rapid comparison purposes, only. Please refer to a specific product’s Product Data Sheet (PDS) and the disclaimers therein for a detailed listing of all characteristics, associated definitions and values needed for structure design, specification compliance review and product submittal purposes. Please Download PDS for all information transfer, printing and submittal purposes.

Property Test Method English Metric
Wide Width Tensile (Ultimate)
ASTM D4595 7,200 x 5,760 lbs/ft 105.1 x 84.0 kN/m
Wide Width Tensile (2% Strain)
ASTM D4595 1,140 x 1,560 lbs/ft 16.6 x 22.8 kN/m
Wide Width Tensile (5% Strain)
ASTM D4595 3,600 x 3,600 lbs/ft 52.5 x 52.5 kN/m
Permittivity 1
ASTM D4491 0.230 sec-1 0.230 sec-1
Water Flow Rate 1
ASTM D4491 15 gpm/ft2 611 Lpm/m2
AOS 1 , 2
ASTM D4751 30 US Std. Sleve 0.600 mm
UV Resistance
ASTM D4355 80 % @ 500 hrs 80 % @ 500 hrs

  • 1   At the time of manufacturing. Handling, storage, and shipping may change these properties.
  • 2   Value represents maximum average roll value.