How Much Insulation Do I Need? | Do It Yourself

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Should I Add Additional
 Insulation To My Walls?

Should I Insulate
 The Wall Plates?

Blowing Insulation Over 
Recessed Lights

Ventilated Attic 
Access Covers

Insulating An Attic 
With No Access Hole

Adding Additional Attic 
Insulation Over Fiberglass Batts

Skylight Covers To
 Reduce Air Infiltration

Do I need a vapor barrier?

Insulating Over Knob and
Tube Wiring

Vapor Barriers On
Basement Concrete Walls

Insulating The Ridge Of
Cathedral Ceilings

Adding Insulation 
Over Vermiculite

How Much Insulation Do You Need?

Tyrone R. of San Diego, CA wrote:

Hey Itchy,

How do I figure out what kind of insulation I need? I am doing a remodel and I want to make sure I'm insulated properly for my neck of the woods.

Insulation comes in various types and sizes. All are based on the R-value needed. Some areas of the country will require more insulation than others. I have a chart below that will show you, based on where you live, the recommended R-values of insulation to be installed in the different areas of your house.

Weather conditions and fuel costs affect the minimum amount of insulation you should go with. I would also check with your local building inspector before making your decision.

Photo provided by U.S. Department of Energy

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