How an Insulation Contractor Installs Fiberglass Insulation
In this segment of the "How to Install Fiberglass Insulation" video by This Old House, the insulation contractor provides practical guidance on addressing obstructions like electrical boxes and air conditioning lines during the insulation installation process. When encountering electrical boxes, the installer recommends a meticulous approach by splitting the insulation batting and carefully tucking each piece around the box. This method ensures that there are no gaps or cold drafts, optimizing the insulation's effectiveness.
For air conditioning lines, the installer advises pulling the pipe out, securing it behind the insulation, and ensuring a snug fit. This technique contributes to a seamless and well-insulated wall. Throughout the installation, the importance of insulating and sealing around windows using low-expansion foam is highlighted. Continuous vapor barriers are stressed as crucial for preventing warm, moist air from condensing on the fiberglass insulation.
Various materials are employed in the insulation process, including fiberglass batting with a paper face acting as a vapor barrier, polyethylene sheets, and foam insulation. These materials work in tandem to create an effective insulation solution for the wall. Additionally, the installer emphasizes the practice of leaving the insulation up during drywall work to protect windows, showcasing a comprehensive and strategic approach to the insulation installation process.
