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US 11,685,140 B2Granted
Non-wicking underlayment board
AssigneeJohns Manville
InventorDuane Paradis
Life of this patent
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Abstract
A non-wicking underlayment board and methods for forming the same. The non-wicking underlayment board includes a foam core formed of closed cell foam with reinforcement layers encapsulated within the foam core. Outer facings formed of mineral coated nonwoven fibers are positioned on opposite faces of the non-wicking underlayment panel. The non-wicking underlayment board is useful for efficient and cost effective installation of barriers and surfaces in water-resistant and waterproof environments.
Claims15
A non-wicking underlayment board, comprising:
- a foam core layer having a compressive strength greater than one hundred and fifty pounds per square inch and a thickness in a range of between 3.175 mm (⅛ inch) to 101.6 mm (4 inches);
- a reinforcement layer coextensive with the foam core layer and integrally formed within the foam core layer, the reinforcement layer comprising a fiberglass scrim;
- and
- a first and second low-wick outer facing layer coextensive with and positioned on opposite faces of the foam core layer, each having a tensile strength of greater than one hundred pounds per linear inch and comprising mineral-coated nonwoven fibers and having a thickness in a range of between 0.15 mm (0.0059 inches) to 0.3 mm (0.0118 inches), wherein the mineral-coated nonwoven fibers prevent wicking of liquid and are compatible with mortar and adhesive.
1 more element
A non-wicking underlayment board, comprising:
- a foam core layer having a compressive strength greater than one hundred pounds per square inch and a thickness in a range of between 3.175 mm (⅛ inch) to 101.6 mm (4 inches);
- a reinforcement layer coextensive with the foam core layer and integrally formed within the foam core layer, the reinforcement layer comprising a material having a tensile strength of at least one hundred pounds per linear inch;
- a first outer facing layer coextensive with and positioned on a first face of the foam core layer, the first outer facing layer comprising mineral-coated nonwoven fibers and having a thickness in a range of between 0.15 mm (0.0059 inches) to 0.3 mm (0.0118 inches), wherein the mineral-coated nonwoven fibers prevent wicking of liquid and are compatible with mortar and adhesive;
- and
- a second outer facing layer coextensive with and positioned on a second face of the foam core layer, the second outer facing layer comprising mineral-coated nonwoven fibers and having a thickness of greater than 0.3 mm (0.118 inches).
2 more elements
Dependencies are inferred from the claim text.