Roof and attic
Hi. I have a large attic which has staircase access. There is also an air handler in the attic, and the ductwork is mostly in the rafter bays of the roof. I have lots of air seal-penetration types of issues in the attic floor that need to be addressed as well.
I would like to finish the attic. So, the question is... what's the best way to insulate?
I am thinking that iso above the roof deck, or sip panels, or something along those lines, with a shingle layer (or approriate material for a normal looking residential roof) would be the best because: no thermal bridging, air seal issues in the attic floor become less of a prioirity, the handler and ductwork are now in the envelope, and I do not have to move ductwork or fur anything out to make room for insulation on the inside.
Is redo-ing my roof this way the best approach from an insulation and space-saving standpoint? I am thinking total cost would be more, but not too much more than a closed-cell, fur-out move duct approach.
I guess the other option is to keep the attic vented, and insulate around the finished area?
Any advice would be appreciated.
(NJ shore near the water, climate zone 4).
Posted Tue, 03/12/2013 - 12:43
Edited Tue, 03/12/2013 - 16:26
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