US 12,403,682 B2
Roofing underlayment
Gurpreet Singh Sandhar, Langley (CA); Kenneth Russell Robson, Langley (CA); and Sahar Khedri, Langley (CA)
Assigned to BMIC LLC, Dallas, TX (US)
Filed by BMIC LLC, Dallas, TX (US)
Filed on Oct. 2, 2023, as Appl. No. 18/479,553.
Application 18/479,553 is a continuation of application No. 17/297,856, granted, now 11,787,162, previously published as PCT/CA2018/051526, filed on Nov. 29, 2018.
Prior Publication US 2024/0100815 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/12 (2006.01); B32B 5/02 (2006.01); B32B 7/12 (2006.01); B32B 27/20 (2006.01); B32B 27/32 (2006.01); B32B 27/34 (2006.01); E04D 12/00 (2006.01)
CPC B32B 27/12 (2013.01) [B32B 5/022 (2013.01); B32B 7/12 (2013.01); B32B 27/20 (2013.01); B32B 27/32 (2013.01); B32B 27/34 (2013.01); E04D 12/002 (2013.01); B32B 2250/03 (2013.01); B32B 2262/0253 (2013.01); B32B 2264/0214 (2013.01); B32B 2264/1021 (2020.08); B32B 2264/1023 (2020.08); B32B 2264/104 (2013.01); B32B 2307/718 (2013.01); B32B 2307/724 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/728 (2013.01); B32B 2307/73 (2013.01); B32B 2307/732 (2013.01); B32B 2419/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A roofing underlayment comprising:
a first layer; and
a non-woven second layer configured to contact a roof deck,
wherein the non-woven second layer comprises:
a carrier resin; and
at least one hydrophilic agent, wherein a total amount of all hydrophilic agents in the non-woven second layer is 1% to 10% by weight based on a total weight of the carrier resin and the at least one hydrophilic agent;
wherein the roofing underlayment has a breathability of at least 10 perms when measured in accordance with standard test method ASTM E96.