Skylights and cold (cold!)…in San Diego
The TLDR version… we have two skylights that appear to be a major source of cold in our family room with a vaulted ceiling. They are dual pane and don’t leak. They’re also large, 5-6 x 2-6. I’m wondering if an acrylic insert, like a storm window, that is air tight and creates a 1″ space, would make much difference when it’s already dual pane. Same for double-cell blinds. They’re expensive to just experiment with, and it would require scaffolding to install, so I’m looking for feedback.
Additional details… Thankfully our house is not in Wisconsin, because the building is already very cold in San Diego (don’t laugh, Midwesterners!). Thanks to the tattletale FLIR camera, we’ve targeted and tackled many obvious issues in the attic, like gaping holes into bath soffits, walls totally open above, sealing around a chimney, adding insulation, sealing every top plate hole, etc. A total of 13 days in the attic and the improvement is minimal.
That could partly be because of the skylights. But as a bonus, that room’s ceiling likely has either no or minimal insulation. It’s hard to tell, but based on the thickness measured inside and outside, it looks like just tile roof, asphalt shingle below that, over T&G. We also have single pane windows and a French door. The total area of glass is about 2.5x that of the skylights. At least the windows and door are tight. We can’t put storm windows on them, but we might have dual pane sashes made (they are $2k each, so they are the last thing we want to do, although we have 4 on order for another room). Why so expensive? The windows are high end wood, expensive to remake custom, and the walls are stucco (not painted).
Thanks for any insight.
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