Quote:
Originally Posted by dablack
Yep JRM. You called it.
Most engineers (I'm mechanical too) aproach things from a ROI point of view.
If an extra $1000 will save me $100 a year, I will do it. If it will only save me $10, I won't. I'm not sure how to make decisions any other way.
Austin
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ROI decisions are easy to get a mathematical answer to.
I'm seeing more factors being included into the decision mix, especially from advanced thinking in Germany. I'm seeing the 'embodied energy' of a solution being entered into the decision mix.
This seems to be the reason that they favor using cellulose as an insulation material (even though it may have a lower R-value), over fiberglass or foam or mineral wool, all of which require substantially greater energy in manufacturing. They will go with cellulose and thicker walls.
-AC