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May 3, 2008
Attic fan and insulation
I am working through the options avaialble to improve our houses energy efficiency and reduce our heating and cooling costs. We have some old fibreglass insulation between the attic floor and the top floor ceiling. However in summer the attic gets incredibly hot. I am considering installing cotton fibre insulation between the roof rafters and a solar powered attic fan, has anyone done this in their brownstone and have an opinion on the value of this investment and effort versus the energy savings.....
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Can't give you much info beyond the following. As far as I know, more insulation is always better but I don't know cost/benefit. We were considering the attic fan but were advised that simply having a vent near the back of the house (low end of roof) & a vent hear the front (high end) was enough to allow convection to clear the hot air that might build up btw our insulated ceiling and the roof during summer... It is too early days for me to tell you how effective this is.
Posted by: going4broke at May 3, 2008 9:01 PM
Is your roof sealant black or silver? If you have it painted silver then that reflects back the sun's rays and keeps your attic cooler. A black roof gets mighty hot.
Posted by: guest at May 4, 2008 9:20 AM
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