I just bought a 100 year old home with a finished attic, that gets very cold in the winter. I want to upgrade the insulation before it gets too cold. There is existing cellulose insulation under the floorboards, and the knee walls are insulated adequately.
I am looking to add additional unfaced fiberglass batt insulation OVER the existing floorboards behind the kneewalls.
Is this feasible, or do the floorboards have to be removed? Can I just lay the fiberglass bats over the floorboards? Will this provide adequate insultion?
2007-11-14 01:34:16 · 6 answers · asked by myth2112 2 in Home & Garden ➔ Do It Yourself (DIY)
Essentially you've answered your own Q. I suspect that adding batting or any type, with the intent to actually use the attic would be diminished.
I'd probably double layer in perpendicular to at least R-45, and the roll type/ unfaced is fine. Fiberglass is a standard that works, and the insulation UNDER the floor boards as it's likely "compressed" isn't strictly doing the job it was intended to do.
Steven Wolf
2007-11-14 01:57:29 · answer #1 · answered by DIY Doc 7 · 1⤊ 0⤋
Insulation Over Floorboards
2017-01-11 09:58:32 · answer #2 · answered by ? 3 · 0⤊ 0⤋
What kind of insulation is in the overhead? Adding insulation behind the kneewalls would only improve the R-value of the rooms below.
2007-11-15 08:50:04 · answer #3 · answered by wildfire6460 3 · 0⤊ 0⤋
Get half the thickness you desire. Get twice as much. Run it opposite ways. Pay particular attention to the outside walls. Also try collecting old bed spreads.
2007-11-14 05:47:59 · answer #4 · answered by Claude 3 · 0⤊ 0⤋
You can do that and it will help. Make sure you use unfaced batts.
2007-11-14 02:56:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
pull up the floor boards one at a time and put in insulation and renail the walk boards back Please give me the 10 points for best answer!!
2016-05-23 03:07:53 · answer #6 · answered by kaitlyn 3 · 0⤊ 0⤋