There are a few important considerations that I think people often miss when deciding between or comparing establishing the thermal enclosure at the attic floor or in the plane of the roof. First, to really do the same…"
"Kevin, I agree, he would be wasting his money to seal the sub-slab ductwork.
There is only one appropriate retrofit measure for ducts below a slab: fill with concrete and relocate ductwork within the building.
I've put a camera in a sub-slab…"
"Thank you for this post, Chris!
Of course we all want the efficiency of mini-splits in a ducted system. The trouble seems to be, however, that once we put ducts on these systems, they no longer have a performance advantage over…"
If you've insulated the pipe, sloped to the outside, properly lapped the joints, left a drain hole or two at the bottom of the vent termination...then I think you're just up against physics. Physics wins every time.
"Appreciate the thoughts, Glen. But I think you need to be careful about the terminology. Building science is science. It's the application of building science that tends to be less scientific. The discipline of building…"
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