Batt

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batt

[bat]
(materials)
A blanket of insulating material usually 16 inches (41 centimeters) wide and 3 to 6 inches (8 to 15 centimeters) thick, used to insulate building walls and roofs.
(mining engineering)
A thin layer of coal occurring in the lower part of shale strata that lie above and close to a coal bed.

Batt

A length of insulation that is precut to fit certain wall cavity dimensions. Batt insulation is typically sold in a prepackaged roll.

batt insulation

batt insulation installed on underside of subfloor
A flexible blanket-type thermal insulation, commonly used as insulation between studs or joists in frame construction; also used as an acoustical material or a component in sound-insulating construction. Usually made from rock, slag, or glass fibers. Sometimes has a vapor barrier on one side or is entirely enclosed in paper with a vapor barrier on one side. Nominally 16 (40.6 cm) or 24 in. (61 cm) wide, and approx. 1 to 6 in. (2.5 to 15 cm) thick.