Anyone who has ever looked inside a newly-framed home knows that insulation performs a big job, and how it’s installed has a huge impact on the comfort and energy efficiency of the building. Unfortunately, in the rush to get buildings drywalled, insulation installers often are treated as “in the way” by drywallers who want them out of their way as quickly as possible. This can result in shoddy installation, especially with fiberglass batts.

Fiberglass batts (or batting) are the most familiar form of insulation, typically sold in pre-cut sheets sized to fit between standard wall studs and ceiling joists or floor rafters. It is also available in rolls that can be cut to custom lengths. Fiberglass can be a cost-effective choice, particularly for DIY homeowners who have basic tools and a little time to spare.

Fiberglass Batts DIY Guide: Troubleshooting Common Issues

To begin your project, first measure the height of each stud bay to gauge how much insulation you’ll need. Accurate measurements will help you avoid overbuying and having to order more halfway through the project. Next, decide how best to handle any obstructions in the stud bays, such as electrical wiring or plumbing. If you need to, use a utility knife to cut the insulation around such obstacles. Always wear proper safety gear, including a two-strap mask rated for fiberglass insulation, a hat, and heavy-duty work gloves.

For hard-to-reach spaces, loose-fill fiberglass can offer a more flexible alternative to pre-cut batt insulation. This type of insulation consists of small chunks of spun fiberglass that are blown into spaces using specialized equipment.

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