We are replacing ceiling tiles in my mother's house and it appears there
never was any insulation previously. Our handyman wants to put out the roll
insulation and then blow insulation on top of that. Is this really
necessary? Isn't the roll insulation all that is necessary? TIA
Do you mean he wants to put in roll insulation and then blow insulation
on top of that? If so that should be a good plan, but you may be able to
just blow the insulation in unless there are problems with that like vapor
If the ceiling tiles just sit loose in a grid (not clipped down) you may
find (as I did) that it 'snows' blown in insulation every time someone slams
a door for the 1st few months. I did. It's also a mess if you ever have to
replace a tile or remove it to work above.
Just FYI, this is a slight underestimate for the R-value.
R-value/inch goes up slightly when you compress fiberglass insulation.
This is why higher density fiberglass insulations have a higher
R-value/inch. Of course, total R-value still goes down when you
compress the insulation.
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