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The effectiveness of insulating your attic depends on the proper R-value for your home (depending upon where you live) and how you insulate the attic.
R-Factor
The R-factor is a scale that goes from low to high, with higher numbers meaning better insulation effectiveness. Most attics need an R-38 but my attic needs an R-49. There are even proposed energy codes that would increase that number to over R-50. Calculate your home's R-Value.
Effectiveness of the R-Factor
The effectiveness of an insulated attic, wall or floor depends on how and where the insulation is installed.
Here are some important tips on installing insulation to remember:
- Do not compress the insulation.
- Insulation should cover the tops of the joists.
- If you can, use insulative sheathing on walls.
So even though an R-Factor is important to properly insulating your attic, it is important to properly insulate the joists and walls.
Source: US Department of Energy Consumer Savings Guide.
Here are some other energy saving resources about insulation for your information:
How to Rid Your House of an Unwanted Chill!
Consider Blackout Curtains to Save Energy and Control Light and Noise
Use Cellular Blinds To Save Energy
Save Energy with an Attic Stair Cover
Green Your Home For Winter: Add Attic Insulation
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