# US 2014/0190099 A1 · Sill pan membrane > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190099 A1 - Document ID: US20140190099A1 - Status: Published application - Kind: A1 - Application number: 14/137,333 - Filed: 2013-12-20 - Published: 2014-07-10 - Earliest claimed: 2012-12-21 - Assignees: Protecto Wrap Company - Applicants: Protecto Wrap Company - Inventors: John R. Hopkins, II - Web page: https://patentgrep.com/patent/US20140190099A1 ## CPC - E06B 1/702: {Window sills} - E06B 7/231: {with a solid sealing part} - E06B 7/2316: {used as a seal between the floor and the wing} - E06B 2001/628: {Separate flexible joint covering strips; Flashings} - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) ## Abstract Disclosed herein are various waterproof membranes that may be applied to a sill surface of an opening in a building structure to waterproof that surface as well as direct water that penetrates through the opening out of the structure. Generally, a flexible waterproof membrane is adhesively applied to the sill surface for purposes of waterproofing that surface. In one arrangement, the membrane includes a conformable adhesive flap that extends beyond the front edge of the sill surface and which is flexible to allow stretching and adhering the flap to a surface that is transverse (e.g., vertical) to the remainder of the membrane. The membrane also includes a non-adhesive flap that may be disposed over the adhesive flap once it is adhered in a desired orientation. The non-adhesive flap provides a durable surface for the adhesive flap once it is stretched and adhered in place. ## Claims ### Claim 1 An membrane for use in waterproofing a windowsill surface, comprising: an adhesive material layer having a top surface and a bottom surface; a bottom release sheet releaseably attached to the bottom surface of the adhesive material layer; a top release sheet releaseably attached across a first portion of a width of the top surface of the adhesive material layer; a facer layer adhered across a second portion of the width of the top surface of said adhesive material layer, the facer layer further including a non-adhered portion sized to extend over at least part of said top release sheet. ### Claim 2 (depends on 1) The membrane of claim 1, wherein said non-adhered flap portion is sized to extend over the entirety of said top release sheet. ### Claim 3 (depends on 1) The membrane of claim 1, wherein the adhesive material layer is waterproof. ### Claim 4 (depends on 3) The membrane of claim 3, wherein the adhesive material layer comprises a bitumen containing material. ### Claim 5 (depends on 3) The membrane of claim 3, wherein the adhesive material layer comprises a rubberized material. ### Claim 6 (depends on 3) The membrane of claim 3, wherein said adhesive material layer is between 10 mils and 40 mils thick. ### Claim 7 (depends on 1) The membrane of claim 1, wherein the facer layer comprises a polymeric sheet material. ### Claim 8 (depends on 1) The membrane of claim 1, wherein the facer layer has a thickness of less than 10 mils. ### Claim 9 (depends on 1) The membrane of claim 1, wherein the adhesive material layer is free of internal reinforcement. ### Claim 10 (depends on 1) The membrane of claim 1, wherein the bottom release sheet further comprises: first and second bottom release sheets releaseably attached to first and second portions, respectively, of a width of the bottom surface of the adhesive material layer. ### Claim 11 (depends on 1) The membrane of claim 1, wherein said facer layer comprises a textile material operative to move moisture via capillary action. ### Claim 12 A method for forming a sill seal on a sill surface of an opening in building structure using a flexible membrane, comprising: removing a bottom release sheet from a bottom surface of an adhesive material layer of a membrane; adhering said adhesive material layer along a length of a generally horizontal sill surface disposed between first and second upright members, wherein a front portion of the adhesive material layer extends beyond a lateral edge of said horizontal sill surface; removing a top release sheet from a top surface of the front portion of the adhesive material layer; conforming the front portion of the adhesive material to a horizontal surface extending between the first and second upright members, wherein at least a portion of the horizontal surface is below the sill surface; and covering at least part of the top surface of the front portion of the adhesive material layer with a flap portion of a sheet member having a rearward portion that is adhered to a rearward portion of the top surface the adhesive material layer of the membrane. ### Claim 13 (depends on 12) The method of claim 12, wherein disposing includes adhering a first end of the adhesive material layer at least partially up the first upright member. ### Claim 14 (depends on 12) The method of claim 12, wherein conforming comprises: adhering the front portion of the membrane around a corner defined by said horizontal sill surface and said first upright member. ### Claim 15 (depends on 14) The method of claim 14, further comprising: stretching the front portion of the membrane around the corner defined by the horizontal sill surface and said first upright member. ### Claim 16 (depends on 13) The method of claim 13, further comprising: contacting the adhesive bottom surface of the first portion of the flexible membrane to the generally horizontal sill surface. ### Claim 17 (depends on 16) The method of claim 16, further comprising: contacting the adhesive bottom surface of the second portion of the flexible membrane to the outside surface of the opening. ### Claim 18 (depends on 16) The method claim 16, further comprising: removing a top release sheet from a top surface of the front portion of the membrane.