heaving slab - Contractor Talk - Professional Construction and Remodeling Forum

sonny K · 05-19-2008, 03:21 PM

I built an unheated barn two years ago, with 4 foot frost walls,and gravel under the slab. Come winter the slab heaves right infront of the door-its ugly. I would like to repair the concrete but have to stop the heaving first. I am thinking of digging down about a foot on the outside and laying some rigid insulation horizontally(this is only along the south wall). Whatdaya think?

neolitic · 05-19-2008, 03:36 PM

Quote:

Originally Posted by sonny K

I built an unheated barn two years ago, with 4 foot frost walls,and gravel under the slab. Come winter the slab heaves right infront of the door-its ugly. I would like to repair the concrete but have to stop the heaving first. I am thinking of digging down about a foot on the outside and laying some rigid insulation horizontally(this is only along the south wall). Whatdaya think?

I think "HVAC Picture Post"
is a weird place to post this.

**genecarp** · 05-19-2008, 03:38 PM

Quote:

Originally Posted by neolitic

I think "HVAC Picture Post"
is a weird place to post this.

why, cool air comes through the floor when the slab heaves, winter AC