My wife and I bought a house with a wood stove in the basement about 6 years ago. The ceiling in the basement was sheetrocked and there was what looked like a stone heat diffuser that was mounted to the ceiling above the wood stove. We had water get in the basement over the years which led to a mold problem. We recently had the mold remediation done and they removed all the sheetrock from the basement including the stone diffuser over the wood stove. I don't want to risk the warping or any damage to the floor joists above the stove. I'm wondering if it is recommended to put some other type of diffuser up before using the wood stove on a regular basis again. I measured and the top of the wood stove is 55" away from the bottom of the joist and the top of the stove pipe is 17" from the bottom of the joist. Any insight would be greatly appreciated.