Anti-slip roofing underlayment

Details Anti-slip roofing underlayment Anti-slip roofing underlayment

2007-12-12

2010-06-29

Ruddock, Ula C (Department: 1794)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Scrim

Woven scrim

C442S043000, C442S045000, C442S046000, C442S049000, C442S050000, C442S058000

Reexamination Certificate

active

07745353

ABSTRACT:
A roofing underlayment comprises a reinforcing layer, which is extrusion coated on at least one side with an anti-slip coating layer. The reinforcing layer comprises a woven polyethylene or polypropylene scrim. The anti-slip coating layer comprises a compound based on a styrene and ethylene/butylene-styrene, S-E/B-S, block copolymer, such as the compound sold under the trademark KRATON® MD6649. The anti-slip coating layer may also be embossed. The anti-slip coating layer is low in cost and helps prevent water from penetrating the primary roofing material. In addition, the anti-slip coating layer provides an improved anti-skid surface upon which an individual may safely walk. Embossment improves the wet slip resistance of the roofing underlayment.

REFERENCES:
patent: 6925766 (2005-08-01), Di Pede
patent: 2006/0228963 (2006-10-01), Souther et al.
patent: 2008/0289289 (2008-11-01), Wiercinski et al.
C. E. Shepherd Company, Houston, TX. Product information sheet—Diamond Pattern 92 Gauge Embossed Polyester Film. www.ceshepherd.com.
C. E. Shepherd Company, Houston, TX. Product information sheet—Diamond Pattern 142 Gauge Embossed Polyester Film. www.ceshepherd.com.

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