Latest Discussions : HVAC

hoganem

06:27AM | 05/16/03
Member Since: 02/13/03
90 lifetime posts
Is it beneficial to add the fanfold insulation to the basement walls before backfilling? What is the proper thickness for the miwest cold belt?

I saw some thin stuff and it had an r-value of 1.0, I thought it wasn't worth putting on. I'll be finishing the basement with studs and insulation to r-13 in the stud cavity.

Suggestions?

Jay J

03:56PM | 05/19/03
Member Since: 10/26/00
782 lifetime posts
Hi hoganem,

NOT below grade!!! I don't know what you'd be referring to for use below grade. FanFold is an above-grade material for 'leveling' walls when you want to install, ... say, vinyl siding.

If you do anything to the outside, consider a membrane that channels water to the footing, and then it gets 'channeled' away from the footing via perforated pipe.

Yes, insulate the below-grade basement from the inside. R-13 is plenty. Remember - The basement shouldn't get much colder (via the outside walls) than 55 degrees. The dirt outside acts as its own insulator.

My best to ya and hope this helps.

Jay J -Moderator

PS: God Bless America!



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