Re: is there such a thing as too much insulation?
- From: Michael Daly <michaeldaly@xxxxxxx>
- Date: Fri, 14 Jul 2006 15:42:08 -0400
Jason wrote:
Is there such a thing as too much attic insulation?
That depends. If you aren't concerned with cost, then no. However, since there are diminishing returns, at some point, adding insulation beyond a certain point is not cost effective. That point is dependent on what future energy costs are.
Does attic insulation really cut down on heat gain in the summer and heat loss in the winter?
Yes.
Or is there some other place to look to cut down on heat gain?
If the only insulation is in the attic, then all you are doing is losing heat/cool through the walls and basement. As well, too much airflow through the walls, doors, windows etc makes the attic insulation ineffective.
The optimum is to balance it all out. You have to ensure that you have insulation in the walls and basement as well. Your windows and doors should not leak air excessively. Ditto walls and such. If you restrict air flow too much, you should then look at a heat recovery ventilator to ensure proper ventilation of living space without heat/cool losses.
In general, retrofitting an older house to the max is very expensive and not always worth the trouble. Sometimes something as simple as a few tubes of acoustic caulking is very cost effective - close up the biggest air leaks. You have to investigate all the options and decide when the cost exceeds the benefit.
Mike
.
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