I have only 6-9" of batt insulation currently in my attic (east coast
of Canada). For a while, I've been waffling over what to put on top in
order to increase the depth. Some friends recommend more batts (laid
perpendicular to what is there), while others recommend loose-fill.
Any recommendations? It's not much more than a crawl space up there,
even though the attic is about 1000sq ft. I could do the batts myself,
but I'd be a little unsure about the loose-fill.
Pros and cons of each? Concerns over covering up wiring?
Both are good.
In either case you want to make sure you do not block vents. Every
Batts may be easier to add, or may not
loose-fill has a tendency to fill in small spaces and seal air leaks,
which is good.
6-9" = r 21- r 34, minimal and well below the optimum for your area,
add another R 35 in batt or fiberglass blown in. Cellulose is junk and
serttles and deteriorates. Also calculate in 15% settling of new
insulation so add an extra 15% over R 35. Price out what is cheaper,
batt or blown in. Don`t worry about wires.
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