Home Addition Plus

Helping Homeowners Every Day

 
    Home How-To Store Ebooks    Bid Sheets HouseSight About Us Contact

 

 
 

Sign up for the HomeAdditionPlus.com Newsletter

Get free monthly home improvement tips that will save you time and money!

    

                              

Home Addition Bid Sheet

  

                           

Insulation R-values for Homes

 

Different R-value Insulation Requirements for Different areas of the Home

 

By Mark J. Donovan

 

 

 

If you are in the process of purchasing a new home, one area that you should pay close attention to is the insulation R-values throughout the home. The insulation R-value is a metric for rating how well a particular type of insulation resists heat transfer. The higher the R-value the more effective the insulation is in preventing the flow of heat. This is an important metric whether you live in a cold or hot climate. A home in a hot climate will have high energy bills due to air conditioning, whereas a home in a cold climate will have high energy bills due to heating.

 

There are several types of insulation, however the prevalent types used in homes are batt and blanket insulation, rigid foam insulation, blown cellulose fiber insulation and sprayed foam insulation. Each has different R-values due to the fact that they are manufactured out of different types of materials.

 

Batt and Blanket Insulation R-values

 

Batt insulation, or blanket insulation is typically made from pink fiberglass or yellow looking rockwool material and is used prevalently in walls, attics and between floors. Their R-value is approximately 3.14 to 4.0 per inch, respectively. This type of insulation is slid into place between wall studs and ceiling and floor joists and stapled into place. Some types come with a paper facing, others do not. Blanket insulation typically comes in long rolls that can be cut to length, whereas batt insulation comes in many 4 or 8 foot lengths per bundle.

 

Rigid Foam Insulation R-values

 

Rigid foam insulation is typically used on exterior sheathing or around foundation walls. It is also used in basements between furring strips attached to concrete walls. Typically rigid foam insulation has an R-value of 4.4 per inch.

 

Spray Foam Insulation R-values

 

Spray foam insulation is used in homes between wall studs and floor joists, and in ceilings. It is typically installed by a professional as it requires some sophisticated equipment. The two part liquid polymer is sprayed from a nozzle into walls, floors and ceilings.

 

As it is sprayed it rapidly expands to fill the cavity. When used in between wall studs on new home construction, after it has been sprayed and expanded, it is then trimmed to the wall thickness using a saw. Spray foam insulation is ideal for older existing homes, as small holes can be drilled in between the wall studs, and the insulation sprayed in. The R-value of spray foam insulation is approximately 3.7 per inch.

 

Get free insulation contractor price quotes.

 

Blown Cellulose Fiber Insulation

 

Blown cellulose fiber insulation is made from chemically treated recycled newspapers. The chemicals help to ensure the insulation material is fire retardant and moisture resistant. Cellulose fiber insulation has an R-value of approximately 3.5. Though it can be used in walls, attics and between floors, it is ideally suited for hard to reach places, such as attics. It is great for filling in between cracks and otherwise hard to insulate places.  Typically a professional needs to install this type of insulation as it requires some special equipment for blowing it into place. Overall blown cellulose fiber insulation costs a little more than batt or blanket insulation, however it has a better R-value and more tightly seals hard to insulate areas.

 

Use the Correct R-Value for Your Region

 

It is important to use the correct insulation R-values in specific areas of the home, for your region of the country. The U.S. Department of Energy has published guidelines for the recommended R-values for each region of the country. (See below). It is important when buying a home to make sure that the building contractor has insulated the home using these recommend R-values for your area.

 

U.S. Department of Energy Recommended* Total R-Values for New Houses in Six Climate Zones

 

For help in hiring a home remodeling contractor for your next home remodeling project visit HomeAdditionPlus.com's Home Addition Bid Sheets. Home Addition Bid Sheets include the tools and information you need to ensure you hire the right home remodeling contractor for you home remodeling project. Each bid sheet contains a comprehensive checklist of questions to ask prospective contractors, as well as cost and timeframe estimates. Home Addition Bid Sheets help ensure that your home remodeling project will be accomplished on time and on budget.

 

 

 

  

 

 

 

   

- Insulation R-Values for Homes -

[Back to Home Insulation]

 

 
     

Follow HomeAdditionPlus on Twitter

to HomeAdditionPlusVideos / Subscribe to HomeAdditionPlus.com feed

Advertise / Favorite Links / SiteMap / ToS / Privacy Policy / Disclosure Policy

Copyright 2005-2013 by DIY HomeAddition Plus.com - A Do it Yourself Home Improvement Site

 

 

web metrics