2x8 insulation


Old 09-21-12, 03:17 AM
Thread Starter
Join Date: Sep 2012
Location: USA
Posts: 1
2x8 insulation

New guy here, great site!

i have 2x8 ceiling joists in my kitchen, half is covered by the upstairs floor and half is open. would it be more benificial to use r-13 doubled up (v/b only to kitchen side) to fill the 7 in space, or just use r-19 and leave an inch open to the upper floor? tia

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Old 09-21-12, 08:04 AM
Join Date: Jan 2009
Location: PA
Posts: 132
R19 will work and be less labor. Insulation should not be tight against roof and ceiling anyways. It should have some air space anyways.

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