Stiffening The Floor
Don't know if this is the right section to post - but here goes...
I've got a woodstove I installed in my living room. It weighs about 500 lbs. The only requirement beneath it is a non-combustable surface. I put down per the manual a sheet of thin metal, dura-rock and ceramic tile on top of that to finish it off.
Here's the problem. My floor flexes a bit up and down when my kids come bouncing through the room. This flex has caused the tile to begin to break-up and I need to grout/repair.
My floor has 2 x 8 joists on 16 inch centers running a span of around 13 ft. The center of the stove is about 3 ft from the wall.
I have a basement beneath and I was thinking of putting up some supports from the basement floor to the floor beneath the stove - 4 posts, one at each corner and finish it in like a closet, which would work.
If I don't want to tie-up the basement floor with poles/closet type structure, what would you recommend?
The up and down movement is not severe, just enough over time to crack the grout/tile.
Any advice would be greatly appreciated.