How do builders insulate new homes?

Builders insulate new homes using a variety of materials and techniques to enhance energy efficiency and comfort. Common methods include the installation of fiberglass batts or spray foam insulation in walls, attics, and floors, as well as the use of rigid foam board for exterior walls. Additionally, builders may incorporate insulated doors and Windows, and seal any gaps to minimize air leaks. The choice of insulation often depends on climate, building design, and budget considerations.