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US 9,068,088 B2Granted
Protective air barrier sealant for conditioned and unconditioned building walls
AssigneeSealantTech
InventorWilliam Davis Collins
Life of this patent
Estimating the term…
Abstract
A protective air barrier air barrier sealant and methods of applying the same, including a high density polyurethane chemistry provided in an amount, volume, and density effective for providing a protective air barrier for an enclosure, wherein the polyurethane material is combined with at least one UV, fire and antimicrobial protectant for providing UV protection to UV-exposed surfaces.
Claims15
An air barrier sealant consisting of:
- a closed cell polyurethane material including UV, fire and antimicrobial protectants, the closed cell polyurethane material not having more than 8% open cells;
- wherein the air barrier sealant has a top exposed surface that is spaced apart from a bottom surface by a thickness, wherein the top exposed surface is resistant to cracking, breaking, chipping, corrosion, and other deterioration;
- wherein both the top exposed surface and the corresponding bottom surface completely cover a surface of an object by the bottom surface adhering to the object surface;
- wherein the air barrier sealant expands after application to the entire wall, the thickness being about ¼ inch;
- thereby providing an air barrier on the entire exposed wall surface;
- wherein the air barrier sealant has an air permeance of not more than about 0.00030 CFM/ft2 upon application of a differential pressure to the air barrier sealant of about 300 Pa;
- wherein the air barrier sealant has a pull adhesion of not less than about 110 kPa and a tensile strength of not less than about 200 kPa;
- wherein the air barrier sealant is substantially non-deformable for differential pressures up to approximately 300 Pa;
- and
- wherein the average calculated air flow is no more than 0.001508 L/(sm2) for differential pressures up to approximately 300 Pa.
7 more elements
A method for providing a protective air barrier sealant which is substantially non-deformable for pressures up to approximately 300 Pa including:
- providing an air barrier product consisting of a closed cell polyurethane material including UV, fire and antimicrobial protectants, the closed cell polyurethane material not having more than 8% open cells;
- applying the air barrier sealant onto an exposed wall;
- wherein upon application to the wall surface of the air barrier product will expand to produce a thickness of about ¼ inch between the wall surface and the top exposed surface of the air barrier sealant, wherein the top exposed surface is resistant to cracking, breaking, chipping, corrosion, and other deterioration;
- wherein both the top exposed surface and a corresponding bottom surface completely cover the wall surface by the bottom surface adhering to the wall surface to create an air barrier layer on the wall surface;
- wherein the top exposed surface of the air barrier product provides UV protection for the exposed wall surface;
- and
- wherein the air barrier sealant has an air permeance of not more than about 0.00030 CFM/ft2 upon application of a differential pressure to the air barrier sealant of about 300 Pa, a pull adhesion of not less than about 110 kPa, a tensile strength of not less than about 200 kPa.
4 more elements
Dependencies are inferred from the claim text.