Deep energy retrofit strategies for uninsulated brick home in Phoenix
I’m looking to perform a deep energy retrofit on my 1947 brick home in Phoenix, AZ, and was hoping to get some feedback from the forum about the most cost-effective and beneficial strategies. The exterior walls are exposed double-wythe brick with 3/4″ plaster on the interior. The windows are the original leaky, single-pane, steel casements. The attic is vented with R-38 on the ceiling, and the majority of the ductwork is exposed to the high attic temps.
In Phoenix, homes of this vintage are considered historic, so I am unable to cover up the original exposed brick on the exterior. The windows are a hot button as well, but I may be able to swap those out if I can maintain the original aesthetic. My thoughts include replacement windows, a layer of rigid insulation on the interior side of the walls, maybe open-cell spray foam on the underside of the roof deck to create a conditioned attic, replacement A/C, duct sealing, etc.
Any comments or thoughts are welcome. Phoenix receives very little rain, but I am a little concerned about insulating/air sealing the interior side of the previously un-insulated brick wall. Does anyone know if this will cause any unintended condensation or vapor drive issues?
Thanks in advance.
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