Variant of batcotton or wool fiber wadded into rolls or sheets
American Heritage Dictionary of the English Language, 5th Edition
Batt Sentence Examples
Similar to batt and rolls, loose fill uses fiber glass, rock and slag wool, or cellulose pieces that are blown into the attic space using a large flexible hose attached to a pump blower.
Traditional products such as batt and blanket insulation and blown insulation are even getting makeovers to be more economical while new technological advances provide the latest in eco-friendly options.
Though not often used for attic insulation since it is more expensive than batt and roll or loose fill, another type of product is spray applied.