[rcecale]

Originally posted by rhjames
looks like a nice project, but as my resident mechanical engineer has instructed me, "Did you float the tiles?"

Nope, no floating. My "resident mechanical engineers" have instructed me that it's not necessary.

Originally posted by trekkor
For what?
Do you mean the "Dal-Seal" crack isolation/waterproofing membrane?

If he screws down the subfloor, embeds the backer in thinset and uses enough thinset for tile setting, the floor will outlast every other surface in the home. Lifetime install.

Originally posted by dmoolenaar
...I don't think Randy needs to worry about that as he's installing over wood subfloors with concrete backer board (CBU) and thinset. Folks typically use things like Red Guard for tile install over existing concrete slab. It prevents future hairline cracks in the slab from transmitting up to the tile.

I've seen the work these guys have done and have been very impressed, to say the least. If this is what they're telling me to do, I'm crazy not to follow their advice.

Thanks for the concern though!

Randy