Flooring Tile - thinset- modified,/ un modified
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newtofta
10-06-06, 08:00 PM
when installing 6x6 ceramic wall tile in a shower,do you use modified,or not?
any elaboration as to why would be apretiated.
any elaboration as to why would be apretiated.
Tilebri
10-07-06, 11:26 AM
Modified thinsets are thinsets that have polymers added to the portland/sand mixture to give them more grab, allow for tiles to be bonded to more difficult to bond to type substrates, stronger cures, greater resistance to horizontal movement, better workability, and many specific and engineered purposes for specific needs. Not all modifieds are equal. In a bath or shower surround, with ceramic tile, a general purpose modified thinset in the $15/bag range is fine. Needs change though if you are bonding moisture sensitive stone, glass, or metal inserts.
Modifieds can be purchased as a dry mixure of portland, sand and polymers or can be "made" by mixing an unmodified thinset with that manufacturers liquid additive.
There are modified thinsets on the market today that offer no sag properties for setting tile on verticle surfaces.
Before bringing their products to market, manufacturers test their product's performance under many situations to determine what are the best materials to use with their product. Modifieds will produce a better bond to the smooth surface of a cement board. While the surface may seem rough, it's not as rough as a mud wall or mud bed. The added roughness of those now-a- days lessor used but still superior methods of mud setting provided greater tooth and contact area between unmodifieds and the mud wall or floor.
Modifieds can be purchased as a dry mixure of portland, sand and polymers or can be "made" by mixing an unmodified thinset with that manufacturers liquid additive.
There are modified thinsets on the market today that offer no sag properties for setting tile on verticle surfaces.
Before bringing their products to market, manufacturers test their product's performance under many situations to determine what are the best materials to use with their product. Modifieds will produce a better bond to the smooth surface of a cement board. While the surface may seem rough, it's not as rough as a mud wall or mud bed. The added roughness of those now-a- days lessor used but still superior methods of mud setting provided greater tooth and contact area between unmodifieds and the mud wall or floor.
newtofta
10-07-06, 07:32 PM
thanks for reply & info.
maybe you can tell if i am on the right trac?
i have used shims to bring 1/2" hardi backer out to fit inside tub flange.surface is now 3/8" proud of surrounding dry wall.iam going to install tiles in field & a 1/2 X 2 radius mud cap border tile around sides & top (hope u can picture what i am trying to acomplish)
what i did was replace the tub/had 1/2" or so mud bed w/4x4 tiles over lath w/the 1/2 x 2 radius border.
with thr=e hardi 3/8 proud , how much/how thick do u think i will need the thin set to be?
possible a 1st applied thin layer of mud/thinset & let cure??
maybe you can tell if i am on the right trac?
i have used shims to bring 1/2" hardi backer out to fit inside tub flange.surface is now 3/8" proud of surrounding dry wall.iam going to install tiles in field & a 1/2 X 2 radius mud cap border tile around sides & top (hope u can picture what i am trying to acomplish)
what i did was replace the tub/had 1/2" or so mud bed w/4x4 tiles over lath w/the 1/2 x 2 radius border.
with thr=e hardi 3/8 proud , how much/how thick do u think i will need the thin set to be?
possible a 1st applied thin layer of mud/thinset & let cure??