Unfinished Basement Insulation Requirements – IECC 2009
I recently just purchased a new home. When I signed the contract, the local residential building code was to use the IECC 2009 requirements. I built in zone 5.
As far as I can tell, it explicitly says that basement walls should be insulated.
The builder insulated one wall cavity (approximately 12′ x 4′) and thats it. The entire basement has concrete walls. Additionally, they did not insulate the ceiling, or the walls against the staircase which I think they are required to do if they did not insulate the basement?
I am using 2x more natural gas then average in my area for a brand new home. Something does not seem right. I am very obviously a layman so I don’t want to try and fight the builder to do more insulation without some ammo. I would appreciate any advice. Thanks!
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