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US 12,479,767 B2Granted
Gypsum cement with reduced permeability
AssigneeOwens Corning Intellectual Capital, LLC
InventorsHelen Huang, Steven Badger
Life of this patent
Estimating the term…
Abstract
A cellular glass insulation system for an outer surface of a structure or pipe. The insulation system includes multiple segments of cellular glass. An adhesive having a reduced permeability is provided at the interface between the individual cellular glass segments and is configured to limit water intrusion that might cause corrosion of the structure or pipe.
Claims6
A cellular glass insulation system comprising
- a plurality of cellular glass insulation segments, wherein each cellular glass insulation segment comprises a length, two side joint sections extending the length of the cellular glass insulation segment, and two end joint sections;
- and a modified gypsum cement applied to at least one joint section between adjacent cellular glass insulation segments;
- wherein the modified gypsum cement is formed from a solid component comprising a gypsum cement base and a liquid component comprising water and a waterproofing element;
- wherein the modified gypsum cement comprises the solid component and the liquid component in a weight ratio of about 1:1 to 3:1;
- wherein the waterproofing element is a wax emulsion and is present in an amount of 5% to 40% by weight of the gypsum cement base;
- and
- wherein the modified gypsum cement has a water vapor transmission rate of less than 0.002 perm-inch.
4 more elements
Dependencies are inferred from the claim text.