Hey guys, Im a first time poster and I am seeking some important information for finishing my basement. There are no problems with flooding and water. It is cold down there in the winter and I want to warm up the floors. So i am thinking of putting down a 1 inch thick rigid closed cell rigid insulation over the concrete floor. Then I was going to put down a vapour barrier and tuck tape both the vapour barrier and the rigid insulation seams. Over this I am thinking of putting 3/4 " tounge and groove OSB. I was then going to Tapcon a perimiter of 1" x 2" (to match the height of the rigid insulation) boards on the concrete floor in the rooms and screw the plywood sheeting to those boards, over top of the rigid insulation. The catch is I want to put tile down. I dont know if I can tile over 3/4" OSB which has been tapconed through to the concrete. I was planning on fastening the plywood through the rigid foam insulation to the concrete floor using tapcons. I know a tile substrait shouldnt move more than a 1/16th of an inch so the grout dosnt crack. I was woundering if there was anyone who has done this and what they would do different or if they have some suggestions. I was thinking of also putting 1 x 2 straping every 16 in to fasten to the concrete and then fasten the plywood to the boards. But then there is the issue of the insulation not being continuous. Any suggestions?