US 12,442,192 B1
Method of providing a conductive substrate for an electrical leak detection method and a board therefor
David Vokey, Bellingham, WA (US); Shaun Katz, Lynden, WA (US); Murphy Vockeroth, Burnaby (CA); Patricia Vokey, Bellingham, WA (US); and Andrew Preiksa, Mount Vernon, WA (US)
Assigned to Detec Systems LLC, Bellingham, WA (US)
Filed by Detec Systems LLC, Bellingham, WA (US)
Filed on May 16, 2025, as Appl. No. 19/210,053.
Int. Cl. E04D 13/00 (2006.01); E04D 11/02 (2006.01); G01M 3/16 (2006.01)
CPC E04D 13/006 (2013.01) [E04D 11/02 (2013.01); G01M 3/16 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of constructing a waterproof layer on a roof deck comprising:
applying onto an upper surface of the roof deck an array of cover boards so that the array of cover boards covers at least a part of the upper surface of the roof deck;
and applying onto an upper surface of the array of cover boards a water impermeable membrane;
wherein each cover board of the array of cover boards when applied comprises a base layer of an electrically non-conductive support material with an upper surface and a lower surface;
boards has A wherein each cover board of the array of cover boards has, when applied onto the upper surface of the roof deck, laminated or bonded to said upper surface and said lower surface thereof a facer sheet material;
wherein the facer sheet material of at least the upper surface of each cover board of the array of cover boards comprises an electrically non-conductive material formed of electrically non-conductive fibers and a binder material;
wherein the binder material has an electrically conducting material admixed in the binder material;
wherein the facer sheet material of said array of cover boards covering said at least a part of the upper surface of the roof deck forms a first conductor underneath the membrane extending fully across said at least a part of the upper surface of the roof deck;
whereby an electrical potential can be applied through the facer sheet material over said at least a part of the upper surface of the roof deck for use in a leak detection method for detecting a leak in the membrane by detecting changes in conductivity across the membrane between the first conductor defined by the facer sheet material underneath the membrane and a second conductor above the membrane;
and wherein the first conductor underneath the membrane which extends fully across said at least a part of the upper surface of the roof deck consists solely of said electrically conducting material admixed in the binder material.