Which insulation type is known for being affordable and effective in thermal resistance?

Fiberglass batt insulation is often recognized for its affordability and effectiveness in providing thermal resistance. One of its primary features is its cost-effectiveness, making it a popular choice among homeowners and builders for insulating walls, attics, and floors. This insulation type is made from fine glass fibers and is designed to resist heat flow, which ultimately helps in maintaining indoor temperatures and reducing energy costs.

The installation process is typically straightforward, especially for those familiar with working in construction, contributing to its widespread use. Fiberglass batt insulation is available in various densities and widths, allowing it to fit standard stud and joist spaces efficiently, thus minimizing air gaps that can compromise thermal performance.

While other insulation types like mineral wool, foam board, and spray foam have their own advantages—such as fire resistance, moisture resistance, and superior air sealing—fiberglass batt insulation stands out specifically for its balance of effectiveness and affordability, making it a go-to option in many insulation projects.