What is a key characteristic of batt insulation?

A key characteristic of batt insulation is that it comes in rolls or precut sections designed specifically for installation between framing members, such as wall studs, floor joists, and ceiling rafters. This form factor allows it to fit snugly into the spaces provided, maximizing its thermal resistance and soundproofing capabilities.

Batt insulation is typically made from fiberglass, mineral wool, or cotton, and its installation process is straightforward, making it popular among both professionals and DIYers. The sizing of batt insulation is crucial, as it is often pre-manufactured to fit standard spacing, ensuring efficient coverage and minimal gaps which can compromise insulation performance.

In contrast to the other options, batt insulation is not limited to a liquid form; rather, it is structured to be solid and deliver effective insulation when installed correctly. An air gap is not required for its installation, and while it can face challenges in damp environments, stating it is ineffective broadly oversimplifies its usability; moisture control can often be managed with appropriate vapor barriers and installation methods. Thus, the defining characteristic of batt insulation is indeed its roll or precut form tailored for fitting between various structural framing, ensuring effective insulation.