US 12,168,879 B2
Field-assembled wall and flooring systems
James R. Metzger, Santa Ana, CA (US)
Filed by James R. Metzger, Santa Ana, CA (US)
Filed on Dec. 26, 2023, as Appl. No. 18/396,651.
Application 18/396,651 is a continuation of application No. 18/112,485, filed on Feb. 21, 2023, granted, now 11,851,893.
Application 18/112,485 is a continuation of application No. 17/590,713, filed on Feb. 1, 2022, granted, now 11,585,101, issued on Feb. 21, 2023.
Application 17/590,713 is a continuation of application No. 16/883,934, filed on May 26, 2020, granted, now 11,236,516, issued on Feb. 1, 2022.
Application 16/883,934 is a continuation of application No. 16/269,556, filed on Feb. 6, 2019, granted, now 10,662,657, issued on May 26, 2020.
Claims priority of provisional application 62/627,154, filed on Feb. 6, 2018.
Prior Publication US 2024/0247501 A1, Jul. 25, 2024
Int. Cl. E04F 15/20 (2006.01); E04B 1/82 (2006.01); E04B 1/86 (2006.01); E04B 1/94 (2006.01); E04F 15/18 (2006.01)
CPC E04F 15/203 (2013.01) [E04B 1/82 (2013.01); E04B 1/86 (2013.01); E04F 15/182 (2013.01); E04B 1/942 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A flooring system having a hybrid underlayment, the flooring system comprising:
a plurality of isolation boards adhered to a subfloor in a targeted area, the targeted area lying within a first portion of the subfloor adjacent to a wall;
a cementitious product poured in a second portion of the subfloor so that the poured cementitious product is level with a top side of the plurality of isolation boards, the plurality of isolation boards defining a pour stop for the cementitious product; and
a sealant applied on top of the poured cementitious product such that the sealant covers intersection locations between the poured cementitious product and the plurality of isolation boards;
wherein the plurality of isolation boards is comprised of water-resistant isolation boards, fire-rated cellulose fiberboards or combinations thereof.