Need help with normal insulation r values for heat load calc

[Rmarshall]

Hi everyone

Im doing heat load calculations and just learning about them, is there a site for 101 or if anyone can help me learn about insulation r values for ceiling, floor and wallas etc etc. I dont know anything about insulation r values obviously. some help in standards for certain year periods would be great, 70's, 80's and so on? I live in the northwest Appreciate any help you can give

Rob

Arctic Air

[lynn comstock]

ACCA Manual J. version 7, if you can find it, is simpler to learn from.

[dan sw fl]

Hi everyone

Im doing heat load calculations
and just learning about them, is there a site for 101 or
if anyone can help me learn about insulation r values for ceiling, floor and walls

I dont know anything about insulation r values obviously. some help in standards for certain year periods would be great, 70's, 80's and so on? I live in the northwest
Rob

Arctic Air

http://rvalue.net/index.html

Insulation 40 years ago might have been 1/2 to 3/4 of what it is today.

x

http://www.aps.com/_files/services/ResFAQ/wallceilinginsulation.pdf