How do I know if I have enough insulation?
No matter what kind of insulation you currently have in your attic, one quick way to determine if you need more is to look across the span of your attic. If your insulation is just level with or below your floor joists (i.e., you can easily see your joists), you should add more. If you cannot see any of the floor joists because the insulation is well above them, you probably have enough and adding more may not be cost-effective.
It is important that the insulation be evenly distributed with no low spots. Sometimes there is enough insulation in the middle of the attic and very little along the eaves. If your attic insulation covers your joists and is distributed evenly, you probably have enough.
How Much Should I Add?
Insulation levels are specified by R-Value. R-Value is a measure of insulation’s ability to resist heat flow. The higher the R-Value, the better the thermal performance of the insulation. The recommended level for most attics is to insulate to R-38 or about 10 to 14 inches, depending on insulation type.
Adding the Right Kind of Insulation:
When adding additional insulation, you do not have to use the same type of insulation that currently exists in your attic. You can add loose fill on top of fiberglass batts or blankets, and vice-versa. If you use fiberglass over loose fill, make sure the fiberglass batt has no paper or foil backing. If you choose to add loose fill, it may be wise to hire a professional, as the application requires the use of a blowing machine, although some home improvement stores offer rentals of this machine.
If you have questions about your attic insulation, give Bunn’s and Bennett Heating and Air Conditioning a call at 256-536-0967. We offer free inspection and measurements of your attic’s insulation, and if you need added insulation, we’ll provide you a free, no obligation estimate.
Bunn’s & Bennett’s Heating and Air Conditioning has been serving Huntsville and the Tennessee Valley for more than 34 years. We are fully licensed and insured, and will be happy to answer any questions you may have about your home’s attic insulation and/ or your HVAC system. Call us today at 256-536-0967, or email us at [email protected].
