Any recomendations on lay stone tile over a plywood subfloor on 2 by 6 floor joist.? My concern is craking due to the nature of the sub floor...
My concern is craking due to the nature of the sub floor flexing.
I only did mine. You can not lay stone tile on top of a plywood floor, because the plywood have give to it and the tiles will break.You obligation to put a layer of cement board or hardboard over a layer of thinset, next lay your tiles on top of that.
Make sure that the seam of the subfloor and the hardboard do not lay on top of one another. You also don't want to own four corners of the hardboard meet.
If you floor have a lot of grant to it you might want to renforce it. If the floor moves at all the tiles will eventually break.
If its stone, as contained by flag stones, then be unquestionably sure the joists are 'man' plenty for the extra weight because flagstones are really heavily built.
If it's simply ceramic or slates later it should be ok as although heavy, they're not in the vicinity as heavy as flagstones.
To counteract any possibility of cracking due to movement within the sub floor then there's an chemical addition that gets mixed surrounded by with the glue that gives increased elasticity.
If you ask at the store that you buy the cement from, they'll give you the right stuff.
The plywood that you've overlain the floor joist with will also back counteract any movement in the sub-floor, especially if it have been screwed within position, not nailed.
Answers: I would STRONGLY recommend that you do not lay stone or tile directly on a wood subfloor. You are asking for problems subsequent on. The stone probably won't crack or break but your almost always going to enjoy problems at joints and grout lines. Also, the tiles may eventually come loose.
The recommended agency to lay a tile floor over a wood subfloor is to either install a vein of backerboard or a mud bed. The backerboard is easier for the DIYer and alot cleaner. Mud beds work great and are virtually indestructable but it's a terrifically messy job and take a little more practice to find it right.
If I was lay the floor, I would use 1/2 inch hardibacker with a cracked layer of thinset between the subfloor and the underwriter board. Screw the backer board into the subfloor every 6-8 inches along the turn-up and every 10 inches on the interior of the sheet. Also, it is best to lay the backer board 90 degree across the direction of your subfloor.
After that, you can follow Moscow's advice and mix the thinset next to a latex adhesive to help out with strength and flexibility and lay your tile.