Exterior sheathing panel with integrated air/water barrier membrane

An exterior sheathing cementitious panel which prevents water penetration and air leakage is provided. The panel comprises a cementitious core with at least one cover sheet and over the cover sheet an integrated air/water barrier membrane. The cover sheet comprises a fibrous mat comprising fibers, t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Kenny, Timothy G, Zerucha, Ellen, Cremona, Dominic, Stinson, Scottie Lee, Mcknight, Paula, Sovey, Casey, Link, Brett R, Negri, Robert H, Shake, Michael P, Hernandez, Pamela, Shipp, Paul, Marimpietri, Dante, Mohammad, Muneer, Ullett, James M, Schulte, Kristin
Format:	Patent
Sprache:	eng
Schlagworte:	BUILDING BUILDING MATERIALS CEILINGS FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS FIXED CONSTRUCTIONS FLOORS GENERAL BUILDING CONSTRUCTIONS INSULATION OR OTHER PROTECTION OF BUILDINGS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM PERFORMING OPERATIONS ROOFS STRUCTURAL ELEMENTS TRANSPORTING WALLS, e.g. PARTITIONS
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Beschreibung
Zusammenfassung:	An exterior sheathing cementitious panel which prevents water penetration and air leakage is provided. The panel comprises a cementitious core with at least one cover sheet and over the cover sheet an integrated air/water barrier membrane. The cover sheet comprises a fibrous mat comprising fibers, the fibers are coated or uncoated fibers, and wherein the cover sheet is sandwiched between the cementitious core and the integrated air and water barrier membrane which is water vapor permeable. The integrated air and water barrier membrane comprises from 30 to 70% by weight of a polymeric binder comprising a polyacrylate, polyurethane, silicone emulsion, polystyrene, styrene acrylic copolymer or any combination thereof; from 20 to 50% by weight of calcium carbonate; from 0.1 to 5% by weight of a wetting and leveling agent; and from 0.1 to 5% by weight of a cross linker. Methods for manufacturing exterior sheathing cementitious panels with an integrated air/water barrier membrane are provided as well. The panel simplifies the installation of sheathing panels and enables the panels to be coated with an air/water barrier membrane under controlled conditions during manufacturing.