Our Net 50 Energy Challenge – Part 3
In step 1 we set our goals: reduce our energy usage by 50% and invest up to $8,200 to accomplish this . In step 2 we investigated the exterior of our house and property.
Now in step 3 we collected information on the Building Envelope and filled in this chart:
|
Building Element |
Cavity Insulation 1 |
Thickness (inches) |
Continuous Insulation 1 |
Thickness (inches) |
Gross Area (S.F.) |
Skylight, Window & Door Area |
Net Area (S.F.) |
Description / Finish / Location 3 |
|
Ceiling-Attic Type 1: |
Fiberglass |
5.5 |
Reflective |
0.5 |
850 |
- |
850 |
|
|
Ceiling-Attic Type 2: |
Fiberglass |
11.0 |
Reflective |
0.5 |
250 |
- |
250 |
|
|
Basement Wall Type 1: |
None |
- |
Masonry |
8.0 |
100 |
14 |
86 |
Above Grade |
|
Basement Wall Type 2: |
None |
- |
Masonry |
8.0 |
532 |
- |
532 |
Below Grade |
|
Crawlspace Wall Type 1: |
None |
- |
Masonry |
8.0 |
118 |
- |
118 |
Above Grade |
|
Crawlspace Wall Type 2: |
None |
- |
Masonry |
8.0 |
118 |
- |
118 |
Below Grade |
|
Wall Type 1: |
None |
- |
Masonry |
9.0 |
1,343 |
215 |
1,128 |
Brick and structural masonry |
|
Wall Type 2: |
Fiberglass |
3.5 |
None |
- |
1,003 |
118 |
885 |
Aluminum siding |
We investigated the insulation in the attic to verify how much has an ad
ditional layer of 5 ½” fiberglass batt insulation on top of the 5 ½” layer of loose fiberglass insulation that there is throughout the entire attic.
Our house does not have any floors above unheated spaces, or any slab on grade floors.
We measured the walls of the basement and crawl space walls, above and below grade, and have subtracted the area of the windows.
Finally, we measured the areas of the two different types of exterior wall and subtracted the area of all windows and doors.
After investigating the exterior of our house some of the energy saving improvements that we are considering are to finish adding a layer of R-19 batt insulation to the attic, insulating the crawlspace and basement walls, and possibly adding insulation to the exterior of the southern portion of the house. Our next step in developing our Home Energy Audit will be to examine all of the gaps, cracks and holes in the exterior of our house.
Dan Bossenbroek
September 29, 2009
Tags: Building Envelope, Energy Conservation, Net 50 Energy Challenge Posted in: Energy Conservation, Home Energy Audit
One Response
JustGreenHomes at 10/01/09 12:31:14 | Toyota Prius - October 1, 2009
[...] Our Net 50 Energy Challenge – Part 3 – http://www.justgreenhomes.net/?p=562 Posted on Thu 01 Oct 0:31 retweet 0 votes RT @JustGreenHomes: Our Net 50 Energy Challenge – [...]
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