Certainteed Corporation

Saint Gobain Isover

Valerio Massara

Michael J Lembo

Andrew Clyde Brandt

Todd P Dinoia

Bruce A Hartzell

Jean-Philippe Ndobo-Epoy

John J Bozek

Luc Pierre Vitry

Gregory F Jacobs

Jeffrey Hamilton Peet

Kenneth D Knapp

Timothy Jerome Coogan

Conor Patrick McDonald

Kenneth D Forsythe

Eric Nilsson

Devang Khariwala

The present disclosure relates generally to vapor retarding building materials and methods for making them. The present inventors have found simple and cost-efficient materials that have low water vapor permeability at low relative humidities and that can be provided as a coating on a building material substrate. Notably, in many embodiments, the materials can have high water vapor permeability at high relative humidities. In one embodiment, the disclosure provides vapor retarding articles comprising a building material substrate; and a polymeric coating layer coated on the building material substrate, the polymeric coating layer comprising an inorganic hydrophilic particulate filler dispersed in a continuous organic phase comprising a hydrophobic polymer, wherein the content of the filler is from about 30% to about 85% by weight of the polymeric coating layer, the vapor retarding article configured to have a water vapor permeance of no more than about 1 Perm at 25% relative humidity.

Vapor retarding building materials and methods for making them

The present disclosure relates generally to an insulation-retaining sheet, e.g., for blown-in insulation, that includes an integral vapor-retarding membrane. In one aspect, the disclosure provides an insulation-retaining sheet including a sheet of mesh having an air permeability of at least 200 cfm per square foot; and one or more strips of vapor-retarding membrane, the one or more strips of vapor-retarding membrane being laminated to the sheet of mesh, the first side edge each of the strips of vapor-retarding membrane extending to the first side edge of the sheet of mesh, the second side edge each of the strips of vapor-retarding membrane extending to the second side edge of the sheet of mesh, wherein the insulation-retaining sheet has a plurality of open zones extending laterally from the first side edge of the sheet of mesh to the second side edge of the sheet of mesh in which no vapor-retarding membrane is laminated to the mesh.

Insulation-retaining sheet having integral vapor-retarding membrane

An insulation system and method comprising an insulation layer, an atmospheric regulation layer, a structural support, and an external surface; wherein the atmospheric regulation layer is supported by the structural support, wherein the insulation layer is located between the atmospheric regulation layer and the external surface, wherein the atmospheric regulation layer has a water vapor permeability of not greater than 3 perms at a relative humidity of 25% as measured by ASTM E96 Procedure A Dry Cup, and a water vapor permeability of at least 6 perms at a relative humidity of 75% as measured by ASTM E96 Procedure B Wet Cup, wherein the atmospheric regulation layer has a fire class A rating as measured by ASTM E84, and wherein the continuous atmospheric regulation layer has a ACH50 value of not greater than 10, wherein ACH50 represents an air exchange at 50 Pascals.

Systems, methods, and appratuses for insulating adjacent to a top of an attic

A thermal bridge-free insulation assembly may include hangers to support insulation in an attic. The hanger may include an axis, a proximal end coupled to a rafter, and a distal end coupled to a barrier. The hanger also may include at least two components that are axially movable relative to each other to selectively adjust a depth of an insulation space.

System, method and apparatus for thermal bridge-free insulation assembly

Systems, methods, and apparatuses for insulating adjacent to a top of an attic

The invention relates to a vapor retarder membrane, intended to be used for improving the airtightness of a building or of a room, comprising at least one active layer having a water vapor permeability which increases with the surrounding relative humidity, said active layer comprising at least 90% by weight of a blend of ethylene/vinyl alcohol (EVOH) copolymer and of a copolyamide 6-6.6 (PA666), the latter having a melting point below 210&#xb0; C.

Vapour-barrier membrane based on a PA666/EVOH blend

Growing community of inventors

Redavalle, Italy

Valerio Massara