Ask Experts Questions for FREE Help !
Ask
    John Hancock's Avatar
    John Hancock Posts: 12, Reputation: 1
    New Member
    		  
    #1

    Apr 20, 2012, 06:39 AM
    basement Walls
    I just finished the walls in my basement with one inch cladmate rigid foam (The four Foot Concrete Wall ) I Have R-12 Pink Insulation In the knee ( Wood ) Covered With A vapour barrier (plastic).. I have 2 Inch Rigid Foam On The outside wall.. I built a 2x4 wall in front of the interior wall.. My Question Is Do I Need To Continue The Vapour Barrier From The Knee wall Down Over The Foam On The Concrete Wall & If I Do Will It Matter One Way Or The Other... ( I Am Getting Conflicting Stories On How It Should Be done ) ( Is The Plastic Really Necessary Over The Rigid Foam.. I already Got It Done On One Wall.)Just Wondering If I Need To Remove It Or Carry On That Way.. Does It Really Make a Difference.. Just Wondering & I Want To Do It Right.. Thanks.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
    current pert
    		  
    #2

    Apr 20, 2012, 07:00 AM
    I think it's as cheap to cover the 4' rigid foam with plastic as it is to tape all the seams.
    I think what matters a lot is right where the concrete wall meets the floor. Often there are gaps there. I'd run a bead of tube expoxy or concrete filler along the bottom edge.
    If you have an older house with nothing to keep moisture from coming up through the slab it's sort of moot.
    Recent studies are showing that foam on exteriors isn't working because bugs channel all through it, and it's better to lay it flat on the ground about 2'-3' below grade. But some areas require it on the wall.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Basement walls [ 8 Answers ]

I basically allmost finished my basement using 2x4 studs for the walls. My concern is that I just read that the basement walls should be built as "FLOATING WALLS" about 3/4 inch of space between the wall and the joist. I was wondering if this is true and if so how concerned should I be. I basically...

Isulating basement walls [ 1 Answers ]

Hello, I have read and seen many ways to insulate basement walls, I want to use styrofoam panels and then a wooden frame with batts, Should I leave a space between the styrofoam insulation and the wooden frame?

Non-loadbearing Walls in a Basement [ 2 Answers ]

I'm adding a Bedroom and a music room in my basement. I was informed that a Cap Plate in not needed. I've completed 1 wall with Top and Bottom Plates and toe nailed in the 2x6's is this method okay for code?

Basement Walls [ 3 Answers ]

I'm finishing my basement and have conflicting advice on how to wall the floating frame. In the bathroom I would like the wall tiles to go to the floor without the strip (baseboard) that goes around the base of the wall. First is this possible? Second, if possible how is it done? I've been told...

View more questions Search