I am installing my thermopex from my home to the outbuilding. The problem I have is that I cant cut out the slab to come through bottom due to having infloor tubes. The thermopex is way to stiff to come up at a 90 degree and then turn it through the wall. I think the only option I have is to cut it off above grade alongside of the building and then 45 or 90 into the building. I guess i could attempt to cut a oblong hole in my building and attempt to come out of the groung at a 45 through the wall ,but this may be difficult. Does anyone have any advice on how I should do this? Also is anyone aware of any special fittings or accessories to accomplish this.