On Wednesday, October 30, 2002, at 12:53 PM, Tony Dominick wrote:
It will depend upon the basic construction of your property, what your current heating/cooling costs are, and where your "heat" losses really are.and if blow-in insulation is worth while for our house
Generally speaking, in older properties, you are likely to find that "air intrusion" issues will make a bigger difference (ie cost benefit) than insulation. That is to say, door and window frames as well as storm doors and windows (or thermal pane.)
Note that an older house with brick external and plaster internal already has probably a 6 inch "dead air" insulating layer. This is very different construction than what one would find in a Suburban Tract house. Unless you punch holes in those plaster walls for things like electrical outlets and the like, they are usually quite sufficient.
The phrase "drafty old house" is not without meaning.
Similarly, depending upon the vintage of your heating/cooling plant, upgrading it could make a much more "liveable" house, as well as result in substantially reduced fuel consumption and costs. As can the type of heating/cooling you do -- gas, oil, electric.
So, unless you are doing this strictly to be "Green," the expense for blown in insulation alone (i.e. without addressing the other related issues) is likely to take a LONG time to recover in terms of straight savings on heating/cooling costs and improvements in comfort levels.
I'm not saying it is a bad thing to do ... only that it is just one factor, and probably a small one at that, involved in the problem.
T.T.F.N.
William H. Magill
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