Heat loss – attached garage slab
![](https://secure.gravatar.com/avatar/dfef29306a064fd7cf99fbeecbb81a02?s=52&d=https%3A%2F%2Fimages.greenbuildingadvisor.com%2Fapp%2Favatars%2F200x200%2Fl.png&r=g)
Hi, if i want to use radiant floor heating in the slab foundation but not in the attached garage, will there be heat loss into the garage? If so, any suggestions on a better way?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb1.png)
![](https://www.greenbuildingadvisor.com/app/themes/greenbuildingadvisor/dist/img/modules/detail-library/thumb2.png)
Replies
Separate slabs with foam divider.
Ok, thanks! Would an icf type divider be good?
Linda,
I'm not sure what you mean by "an ICF-type divider," but if you plan to install an ICF frost wall around the perimeter of your home -- not including the garage -- and then to pour the garage slab separately, that would work. The thicker the vertical foam between the two slabs, the better.