Jack Find the window brand you want to use, then download their available sizes. The published information also includes which windows meets egrees requirements and so on. So remember you can typically save some money on standard sizes vs custom size window openings. Saying using 3x3 or 4x4 isnt always is easy as that. Also, from an visuals point of view, large square windows can look odd compared to rectangular windows. Also for similar sized sqft of glass, going with a taller window will reduce header requirements, etc.

Posted By toddm on 22 Jan 2012 10:14 AM
TexasICF, one should expect to find references to thermal mass effect and corresponding research in Nudura's literature if the company includes mass in its thermal performance claims. Otherwise, as you suggest, the FTC would come calling. Just to be helpful, it would look something like this: http://www.logbuilding.org/EnergyPerformanceLogHomes.pdf

Please post a link.

Todd,  You're taking this thread off track a bit and I am guilty of taking the bait.   Here is the link that I suggested to you above.   In so many words, ASHRAE's report says that a mass wall with a given R-value performs better than a low mass wall with a higher R-value.  Read it and comment there or start a new thread.

http://www.greenbuildingtalk.com/Fo...fault.aspx

Posted By TexasICF on 22 Jan 2012 02:56 PM

Todd,  You're taking this thread off track a bit and I am guilty of taking the bait.   Here is the link that I suggested to you above.   In so many words, ASHRAE's report says that a mass wall with a given R-value performs better than a low mass wall with a higher R-value.  Read it and comment there or start a new thread.

http://www.greenbuildingtalk.com/Fo...fault.aspx

To settle this once and for all, why doesn't the ICF industry or Nudura just come out with a 3rd part report/study on this and settle it?

Unfortunately until then, this will be a debated issue.

I believe that there is some thermal mass benefit of an ICF home, that I don't doubt. The amount of thermal mass benefit is what is up in the air. I also believe that having the mass exposed to the interior is a better design (SCIP) when it comes to thermal mass vs. having it sandwiched between two layers of EPS.

Posted By Lbear on 22 Jan 2012 03:13 PM

Posted By TexasICF on 22 Jan 2012 02:56 PM

Todd,  You're taking this thread off track a bit and I am guilty of taking the bait.   Here is the link that I suggested to you above.   In so many words, ASHRAE's report says that a mass wall with a given R-value performs better than a low mass wall with a higher R-value.  Read it and comment there or start a new thread.

http://www.greenbuildingtalk.com/Fo...fault.aspx

To settle this once and for all, why doesn't the ICF industry or Nudura just come out with a 3rd part report/study on this and settle it?

Unfortunately until then, this will be a debated issue.

I believe that there is some thermal mass benefit of an ICF home, that I don't doubt. The amount of thermal mass benefit is what is up in the air. I also believe that having the mass exposed to the interior is a better design (SCIP) when it comes to thermal mass vs. having it sandwiched between two layers of EPS.

http://www.forms.org/images/cmsIT/f...ect(1).pdf

Here's a nonformal note from the ICFA that might interest you.    But I'm going to start a thread since we keep moving this one off track.  Regards. 

You are a piece of work TexasICF. You bring up thermal mass when the OP is asking about windows, but I am the one taking the thread off track. The OP is building a house but you want to talk schools. I ask for a formal report substantiating Nudura's thermal mass claims, if any; you offer a "nonformal" study. I don't mind that sales people think they are slicker than me because it is probably true. I do resent being treated like you treat the folks who visit these forums (i.e. like dumb*sses.)