what is a modified thinset?

Old 11-02-05, 06:58 PM
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what is a modified thinset?

what is a modified thinset? is it different from other standard thinsets?
Old 11-02-05, 07:22 PM
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There are unmodified and modified thinsets. The unmodified is pretty much a portland and powdered sand mix. The modified is the same thing but they also add a powdered latex additive or other polymer bonding agent to give the cement more grip when setting and curing. The higher the % of additive the higher the price of the bag. HD sells an unmodified thinset for about $6 a bag, Versabond goes about $14 a bag and FlexBond goes about $25 a bag. Just to confuse things a little more you can purchase a liquid latex additve that can be mixed with the unmodified only in place of water. Sort of a make your own modified thinset. Some will say that offers the best bond.

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