WCP-HS T-272 polyester fabric technical bulletin

The technical bulletin for WCP-HS, Western Colloid’s T-272 polyester fabric, describes a 3 ounce stitchbonded polyester fabric with a medium-soft finish. The code 1211a appears at the top of this one-page PDF. The bulletin says the fabric is used to reinforce cold process roofing systems, and in narrow widths as a reinforcement in elastomeric metal roof systems.

The bulletin describes the fabric as conforming well to cap sheet, smooth surfaces, and filled or spudded gravel. It notes that its close knit may need light brooming to embed the fabric and remove air pockets.

The bulletin lists the roll sizes as 10 square rolls at 40 by 324 inches, and 4, 6, 12 and 18 inch rolls, each 300 inches long. The properties table gives a weight of 3 ounces per square yard or 100 grams per square meter, a thickness of 0.025 inch, a tensile average of 57 lb, an elongation of 61%, a burst strength of 176 lb and a trapezoid tear strength of 16 lb, with averages in the machine and cross machine directions.

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