WATER-DRAINABLE AIR-BARRIER TAPE FOR BUILDING TERMINATIONS
A multi-layered tape comprises in order (i) a substrate having first and second surfaces, (ii) a pressure-sensitive adhesive having first and second surfaces, the first surface of the adhesive being in contact with the first surface of the substrate, (iii) a plurality of continuous spaced apart elements attached to, or partially embedded into, the second surface of the adhesive that are positioned in an angular direction to the axis of the substrate length, and (iv) a release liner having a length and width so as to cover the second surface of the adhesive and the spaced apart elements.
1 . A multi-layered tape having a length, width and thickness wherein the tape comprises in order:
(i) a substrate having first and second surfaces,
(ii) a pressure-sensitive adhesive having first and second surfaces, the first surface of the adhesive being in contact with the first surface of the substrate,
(iii) a plurality of continuous spaced apart elements attached to, or partially embedded into, the second surface of the adhesive that are positioned in an angular direction to the axis of the substrate length, and
(iv) a release liner having a length and width so as to cover the second surface of the adhesive and the spaced apart elements,
wherein the thickness and width of the spaced apart elements, the texture of the outer surface of the elements and the spacing between the elements are such that a building termination comprising the tape minus the release liner passes the air barrier requirement of ASTM E2178-13 of not exceeding 0.004 cfm/sf air infiltration at 1.57 psf pressure and the drainage test of ASTM E2273-03(2011) with at least 98 percent efficiency.
2 . The tape of claim 1 wherein the substrate is a polymeric or metallic sheet.
3 . The tape of claim 1 wherein the pressure-sensitive adhesive is a butyl rubber adhesive.
4 . The tape of claim 1 wherein the element partially covers the top portion, fully covers or extends beyond the full width of the pressure-sensitive adhesive.
5 . The tape of claim 1 wherein the element partially covers the top portion, fully covers or extends beyond the full width of the substrate.
6 . The tape of claim 1 wherein the element is positioned perpendicular to the axis of the substrate length.
7 . The tape of claim 1 wherein the element is a polycarbonate or hot melt adhesive.
8 . The tape of claim 1 wherein the element is embossed, grooved or ridged.
9 . The tape of claim 1 wherein the liner is scored, perforated or slit in the direction of the axis of the substrate length.
10 . The tape of claim 2 wherein the polymer of the sheet is polyethylene or polypropylene.
11 . A joint between two water-resistant barriers in a building comprising lower and upper water-resistive barriers both having inner and outer surfaces wherein the lower edge of the upper water-resistive barrier overlaps the upper edge of the lower water-resistive barrier and wherein a multilayer tape covers the lap joint between the outer surfaces of the lower and upper water-resistive barriers, the multilayer tape comprising in order
(i) a substrate having first and second surfaces,
(ii) a pressure-sensitive adhesive having first and second surfaces, the first surface of the adhesive being in contact with the first surface of the substrate,
(iii) a plurality of continuous spaced apart elements attached to, or partially embedded into, the second surface of the adhesive that are positioned in an angular direction to the axis of the substrate length, and wherein the pressure-sensitive adhesive and the plurality of spaced apart elements contact the outer surfaces of the upper and lower water-resistive barriers at the lap joint and wherein the joint between the two water-resistive barriers passes the air barrier requirement of ASTM E2178-13 of not exceeding 0.004 cfm/sf air infiltration at 1.57 psf pressure and the drainage test of ASTM E2273-03(2011) with at least 98 percent efficiency.