Hi guys,
I am remodeling my downstairs bathroom, it is 4' below grade in Chicago Suburbs. I am tearing up the floor for a recessed shower, and am planning on tearing up all but about 2" from each wall for screed guides and then install pour a new floor with electic radiant heat under entire bathroom. I am wondering what is the best way to connect the new pour to the old concrete slab. I don't know the width of the floor yet, but I am guess 3". I am planning on insulating below the slab to help keep the radiant heating pointed up, tie in the new pour with 4-6" of rebar pins spaced 8-12" apart, extending 6" into new pour, I will have a wire mesh in pour for strength, but also to attach the radiant cables to. I am also planning on keying the concrete as well. Is this overkill. I am just concerened about tiling everything and then seeing the floor joint crack in 5 years. It is below the frost line which is 36-42" here. I will be using Kerdi to waterproof the shower.
So what do you guys think about my strategy for the concrete joining?
Thanks,
Kevin
I am remodeling my downstairs bathroom, it is 4' below grade in Chicago Suburbs. I am tearing up the floor for a recessed shower, and am planning on tearing up all but about 2" from each wall for screed guides and then install pour a new floor with electic radiant heat under entire bathroom. I am wondering what is the best way to connect the new pour to the old concrete slab. I don't know the width of the floor yet, but I am guess 3". I am planning on insulating below the slab to help keep the radiant heating pointed up, tie in the new pour with 4-6" of rebar pins spaced 8-12" apart, extending 6" into new pour, I will have a wire mesh in pour for strength, but also to attach the radiant cables to. I am also planning on keying the concrete as well. Is this overkill. I am just concerened about tiling everything and then seeing the floor joint crack in 5 years. It is below the frost line which is 36-42" here. I will be using Kerdi to waterproof the shower.
So what do you guys think about my strategy for the concrete joining?
Thanks,
Kevin