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Old Wizard Are you saying that the "ledge" left behind is not a ledge to tie the floor to the walls but just a seam of concrete that leaked out of the forms during pour? If so, that would explain why the concrete guy doesn't seemed concerned about the fact that he's got 5.5 inches on one side...

Its the Dow 250. I thought that stood for 25psi versus 15 for 150 labeled stuff.

Thanks. I'm planning on putting down a 6 ml vapor barrier topped with 2 " 25 psi xps. My problem, or question, is am I negatively effecting the concrete pour with all the eps along the edge? The edge of the concrete will be sitting on eps; not the footing. In the area where the footing is...

How did others insulate the perimeter of their basements slabs in preparation for in floor heat? My basement walls are done and I am preparing to put 2 inches of xps under the slab. The question is how to tie the perimeter of the slab into the walls and not have 4 inches of concrete on concrete...

Thanks for the reply. It was the concrete guy that that recommended against the XPS between the stem wall and slab. I will ask him specifically whether the floor is non-structual or not. There is a difference in stem width around the perimeter. 5 inches along one 60 foot wall and only 1.5"...

OK got more info. The footings are 6-7 feet deep. The spouse and I can't remember whther they poured on clay or put some gravel down but think they poured on clay. It's been a wet summer and the water table is about at three feet. When studying up on insulating the basement most people...

After months of researching radiant heat in my new basement and garage decided to go with XPS 2 inches under the concrete slabs and around the perimeter. I'm in SD and have a lot of clay in my building area. The concrete guys showed up today to grade the basement and said that the floor slab...

Thanks for the info on your set up Steve I have a brother in MI putting radiant in his shop next year. He'd enjoy this forum also.

Hi all Been lurking a couple months- first post. Really lots of great people and info on this forum. I'm building a new house and garage and am placing pex for possible future radiant in floor heat. I have read many posts here for input. One thing I haven't been able to find info on is...