03-26-2011, 12:56 PM
I have used both mastic & modified thinset on my floor projects.... mastic takes a very long time to set (up to a week), & seems to have had more voids (hollow when tapped) in setting my 16" tiles than thinset.... (and of course, no pre-wetting tiles & floor with mastic....) all were set the same way... so...
None of the floors are in high traffic, & all are holding down, just the mastic areas have a hollow sound near some of the centers of the tiles...
I now only use the modified thinset - cost & cure time are the main reasons, and none of the mosaic work was done with mastic., including the wall mosaics I have done in the ohana shower room.... mainly because I was using the Schulte system for our ADA roll in shower area
None of the floors are in high traffic, & all are holding down, just the mastic areas have a hollow sound near some of the centers of the tiles...
I now only use the modified thinset - cost & cure time are the main reasons, and none of the mosaic work was done with mastic., including the wall mosaics I have done in the ohana shower room.... mainly because I was using the Schulte system for our ADA roll in shower area