Insulation Frequently Asked Questions

Do I Have To Remove Old Insulation? Unless your insulation is wet, moldy or infested with pests, you don’t need to remove it before adding insulation on top of it. ENERGY STAR® recommends that you inspect your insulation for signs of mold, mildew, moisture and pest infiltration before making this determination.

How Should I Replace My Old Insulation? This depends on what type of insulation you have in your attic/walls, where it’s located and whether the insulation is damaged. If your insulation is wet or damaged, we strongly recommend replacing it before applying a new layer. Otherwise, the problem will spread throughout the new insulation and could significantly damage roofing structures. If the insulation is in good condition, then a new layer can be placed on top without difficulty. However, the application method depends on the type of insulation already in place.

What are the benefits of home insulation? Insulation helps regulate indoor temperatures by reducing heat loss in winter and heat gain in summer. This results in lower energy bills and improved comfort year-round.

Which areas of my home should be insulated? Key areas include the attic, walls, floors above unheated spaces (like crawl spaces or garages), and basement walls. Insulating these areas effectively can significantly enhance energy efficiency.

What types of insulation are available? Common types include fiberglass batts or rolls, blown-in cellulose or fiberglass, spray foam, and rigid foam boards. Each type has its advantages depending on the application and budget.

How do I know if my home needs more insulation? Signs include fluctuating indoor temperatures, high energy bills, drafts, or uneven heating/cooling. An energy audit or consultation can determine if additional insulation is necessary.

What factors should I consider when choosing insulation? Consider factors such as R-value (thermal resistance), moisture resistance, fire safety, and installation method. Your climate and specific home construction also play a role in choosing the right type of insulation.

Can I install insulation myself, or should I hire a professional? While DIY installation is possible for some types (like fiberglass batts), professional installation ensures proper coverage and can identify and address specific insulation needs in hard-to-reach areas like attics or crawl spaces.

How long does insulation typically last? The lifespan varies depending on the type of insulation and environmental factors. Generally, quality insulation can last 10-20 years or more if properly installed and maintained.

Is insulation environmentally friendly? Yes, insulation reduces energy consumption by improving a home’s energy efficiency, which can lower overall carbon emissions associated with heating and cooling.

What should I do if my insulation gets wet or damaged? Wet or damaged insulation should be promptly removed and replaced to prevent mold growth and maintain its effectiveness. Consult with a professional insulation contractor for safe removal and replacement procedures.