When Should I Replace My home Insulation?
The quick answer is that there is no set number of years or a season when to do this. But why is that?
Insulation is designed to provide safety and comfort to your home. When it fails to do so, is when you need to update your insulation. Asking when to replace the insulation is the same as asking, how is my insulation failing me and my house. And if you are considering replacing your insulation, its probably because of these main factors:
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What type of insulation is used for ceilings?
There are multiple kinds of insulation that work if you are looking to insulate your ceiling.
Fiberglass Batts and Blankets
R-value: 3.0-4.0 per inch (R-13 for a 2-by-4-framed wall).
Advantages: Widely available and familiar, standard widths and thicknesses are designed to fit between studs, joists, and rafters. Paper- and foil-faced versions have stapling flanges that make installation easy.
Rockwool Batts and Blankets
R-value: 4-5 per inch (R-15 for a 2-by-4-framed wall).
Advantages: More fire-resistant than fiberglass. Doesn’t itch. Springs into shape against studs, so installation is staple-free and quick.
R-value: 2.2–2.7 per inch.
Advantages: Lightweight enough for attic applications over ½-inch drywall ceilings with framing every 24 inches.
R-value: 3.2–3.8 per inch.
Advantages: Effective at all temperatures, and can even perform better as the air gets colder.
R-value: 5.6-7.7 per inch.
Advantages: The highest R-value per inch of any insulation with a thickness that ranges from ½ inch to 2 inches. It’s often faced with foil, which acts as a moisture barrier. Easy to install.
Open-Cell Polyurethane Spray Foam
R-value: 3.5 to 3.6 per inch.
Advantages: Stops movement of air.
Closed-Cell Polyurethane Spray Foam
R-value: 6.0 to 6.5 per inch.
Advantages: Stops movement of moisture as well as air.