Custom Home

The Budget

Choosing a Builder

The Lot

Architectural Design

Windows and Doors

Interior Design



Air Conditioning





Brick and Stone





Paint and Wall Coverings



Say What?


Insulation is one of the most-often neglected aspects of a home. Properly insulating your exterior walls is important for both energy efficiency and sound proofing.

Insulation is rated using R-values. R-value measures resistance to heat flow. The higher the R-value, the better the insulating capability.

2x4 exterior walls allow for R-13 or R-15 insulation because they are both 3.5" thick. A 2x6 wall allows for R-19 or R-21 insulation. Always go for the highest R-value you can get.

In our ceiling, we used R-38 blown insulation.

Balthazar Custom Homes

If you are looking for a great custom home builder in Dallas, check out John Balthazar of Balthazar Custom Homes. He is fair and knowledgeable. His quality is first-rate. He uses great sub-contractors.

You can contact John at 972-618-7653.

EPA's recommendation for cost-effective insulation R-valuesa

If you live in a climate that is... and your heating systemb is a ... then insulate to these levels in the..
Ceiling Wood frame wallsc floor base-ment/ crawl space wallsd
Warm with cooling and minimal heating requirements (i.e., FL & HI; coastal CA; southeast TX; southern LA, AR, MS, AL & GA). gas/oil or heat pump R-22 to R-38 R-11 to R-15 R-11 to R-13 R-11 to R-19
electric resistance R-38 to R-49 R-11 to R-22 R-13 to R-25 R-11 to R-19
Mixed with moderate heating and cooling requirements (i.e.,VA, WV, KY, MO, NE, OK, OR, WA & ID; southern IN, KS, NM & AZ;northern LA, AR, MS, AL & GA inland CA & western NV). gas/oil or heat pump R-38 R-11 to R-22 R-13 to R-25 R-11 to R-19
electric resistance R-49 R-11 to R-28 R-25 R-11 to R-19
Cold (i.e., PA, NY, New England, northern Midwest, Great Lakes area, mountainous areas (e.g., CO, WY, UT, etc.)). gas/oil R-38 to R-49 R-11 to R-22 R-25 R-11 to R-19
heat pump or electric R-49 R-11 to R-28 R-25 R-11 to R-19

a. Adapted from the U.S. Department of Energy 1997 Insulation Fact Sheet.
b. Insulation is also effective at reducing cooling bills. These levels assume that you have electric air-conditioning.
c. R-Values are for insulation only (not whole wall) and may be achieved through a combination of cavity (batt, loose fill or spray) and rigid board materials.
d. Do not insulate crawl space walls if crawl space is wet or ventilated with outdoor air.


Copyright 2002-2018 James G. Lewis All rights reserved.