Inquiry (采购产品): Application & installers I have a situation where I'm wondering if spray in foam may help me. My contractor poured a concrete floor too low and built it up by laying 2x4s on edge 16" on centers & covered eith 3/4" plywood. On top of that was electric heat cables covered by 1" thick mortar. Tile was then laid on top of that. I found a few areas that moved before the mortar was poured & they set screws through the 2x4s into the concrete so everything seemed to be rigid but I now have cracks through the tile along all of the plywood sheet edges. My question is, assuming we can drill holes through the mortar & plywood without hitting the cables, would spraying some kind of foam into the cavity help to solidify the structure? Then do you know of any contractors that could tackle this kind of problem? I'm in Woodbury. I would appreciate any response. Happy New Year Ian Burrell nancy_ian@msn.com 651.459.4661 **** Hidden Message ***** Ian Burrell Woodbury, MN 55129 USA Company: Homeowner Phone: 6514594661 E-mail: nancy_ian@msn.com **** Hidden Message ***** nancy_ian@msn.com