Kevin C
Well-known member
http://kevincar1.home.comcast.net/Wall R Value Calculator.xls
The link is to a spread sheet I did to calculate whole wall insulation values. There are four examples, it's saved as an .xls
http://www.coloradoenergy.org/procorner/stuff/r-values.htm
Good sight for R values.
http://webcache.googleusercontent.com/search?q=cache:IiNnEiXC1ZkJ:www.owenscorning.com/around/insulation/CompressionChart.xls+&cd=2&hl=en&ct=clnk&gl=us
R values VS compression
Typical whole wall R values:
1: No insulation is about ~ R4.6 (I put this in as a baseline for all of those that have uninsulated walls.
2: R13 Batts ~ R12.7
3: R15 Batts ~ R13.7
4: Frame wall out to 2x6 equivalent with R 19 batts~ R17.4
5: 1/2 EPS Foam (R2) under plywood with r13 batts ~ 15.2
6: 1" EPS Foam (R4) under wood, R13 batts ~ R17.3
7: 2" XPS Foam under siding, R13 batts ~ R23.6
The link is to a spread sheet I did to calculate whole wall insulation values. There are four examples, it's saved as an .xls
http://www.coloradoenergy.org/procorner/stuff/r-values.htm
Good sight for R values.
http://webcache.googleusercontent.com/search?q=cache:IiNnEiXC1ZkJ:www.owenscorning.com/around/insulation/CompressionChart.xls+&cd=2&hl=en&ct=clnk&gl=us
R values VS compression
Typical whole wall R values:
1: No insulation is about ~ R4.6 (I put this in as a baseline for all of those that have uninsulated walls.
2: R13 Batts ~ R12.7
3: R15 Batts ~ R13.7
4: Frame wall out to 2x6 equivalent with R 19 batts~ R17.4
5: 1/2 EPS Foam (R2) under plywood with r13 batts ~ 15.2
6: 1" EPS Foam (R4) under wood, R13 batts ~ R17.3
7: 2" XPS Foam under siding, R13 batts ~ R23.6
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