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/diy/ - Do It Yourself


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1468892 No.1468892 [Reply] [Original]

Would like to frame out this basement area with a flat wall, but the outer edges of the basement in the above-grade section go out 8-10 inches(roughly half of which is filled with existing pony wall and fiberglass insulation).

I would like to put XPS foam sheeting up against the foundation wall and frame inside that, but I assume the gap behind it on the upper half would lead to severe moisture problems.

Anyone got any advice on how to accomplish this?

>> No.1468896
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1468896

Closer view of the area where the pony wall is.

>> No.1468910

I would foam board directly over the existing vapor barrier and leave the foundation alone.

>foam sheeting up against the foundation wall
This is where a gap MUST be.

Alternatively why not add a 8-10in handy shelf on top of the concrete and a slick looking foam board wainscot.

>> No.1468915

>>1468892
https://www.youtube.com/watch?v=qp2v4RjvTfE

>> No.1468917

Room will eventually be an office, and a flat floor to ceiling wall is a must for mounting monitors. Unfortunately, the dip in the concrete is smack dab in the middle of the height a seated monitor would go. Rotating to get away from the exterior walls isn't an option either(wife wants her own workstation so we need to be able to mount in both corners).

With that in mind, making a wainscot work doesn't seem viable, and we pretty much need to have the full floor to ceiling wall.

This leaves the concern with filling out the space behind the wall in a way that won't promote moisture, mold, or fire. I've been reading articles for days and everyone seems to have different opinions on vapor barrier usage as well as material order.

>> No.1469170

high expansion spray insulation?