What is an unmodified thinset?

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In general, unmodified thin-set mortar is a blend of Portland cement, sand, and water retention agents that is mixed with water by the user. … Modified thin-set mortars are similar to unmodified thin-set mortars, but include additional polymers such as latex.

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Therefore, it’s best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating. It’s important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious.

Beside this, What happens if you use modified thinset on Kerdi?

Modified thinset mortars aren’t recommended for use with Kerdi because they must dry out to gain strength, whereas the membrane inhibits drying, which can lead to unpredictable results. For example, if a shower is used before the mortar has cured properly, leaks and polymer leaching can occur.

Likewise, What is unmodified thinset used for?

Therefore, it’s best to use unmodified thinset when working with an impervious installation membrane like Prodeso for installing radiant floor heating. It’s important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious.

Also, Can I use unmodified thinset for porcelain tile?

Just to clarify Danny’s answer; You need to use a modified thinset with porcelain. The only time you can use unmodified is when the manufacturer of an associated system advises to use something else such as with Ditra and Kerdi installations. So unless you’re going over such a system, you have no choice.

What’s the difference between modified and unmodified thinset mortar?

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Unmodified thinset has been around forever. … Unlike unmodified mortar, which consists only of a blend of Portland cement, sand, and water retention agents, modified thinset includes additional retention products, such as latex polymers, which can increase its performance and strength.


19 Related Question Answers Found

 

What type of thinset do I use for Kerdi?

unmodified

What is the difference between modified and unmodified thinset mortar?

Unlike unmodified mortar, which consists only of a blend of Portland cement, sand, and water retention agents, modified thinset includes additional retention products, such as latex polymers, which can increase its performance and strength.

What is the difference between unmodified and modified thinset?

Unmodified thinset has been around forever. … Unlike unmodified mortar, which consists only of a blend of Portland cement, sand, and water retention agents, modified thinset includes additional retention products, such as latex polymers, which can increase its performance and strength.

What is the best tile adhesive for porcelain?

Epoxy Tile Mortar

Is modified thinset waterproof?

As Jason described, thinset itself isn’t waterproof. … Modified thinset, on the other hand, is not recommended because it relies on air to cure properly. It’s important to note that latex-modified thinset can still be used between the membrane and the subfloor because it is not impervious.

What mortar do you use for Schluter?

What type of thin-set mortar should I use when setting tile over Schluter™-DITRA and Schluter™-DITRA-XL? Schluter-Systems requires the use of Schluter SET™ , ALL-SET™ , FAST-SET™, or an unmodified thin-set mortar meeting the requirements of ANSI A118.

What happens if you use modified thinset on Ditra?

The problem with using a modified thinset is that it takes forever to dry over Ditra, especially with porcelain tile, being that it has an impervious barrier above and below. Schluter has said that if you use a modified thinset to set the tile that you can have to wait as long as 7- 10 days JUST TO GROUT.

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How do I know if my Thinset is modified or unmodified?

1. Look for this standard on the packaging (e.g., product meets ANSI A118. 1 when mixed with water). Unmodified thin-set mortar may also be referred to as dry-set mortar by the manufacturer.

What happens if Thinset gets wet?

Thinset will normally be 80% cured after 24 hours for moderate indoor temperatures. 80% is enough to do any work on. … The water has little to do with your thinset now.

Can I use modified thinset over Ditra?

In general, we don’t recommend the use of modified thin-set mortar to set tile over the membranes because these mortars must air dry to cure properly. … Therefore, extended cure times would be required before grouting if using modified thin-set mortars between DITRA and ceramic tile, including porcelain tile.

Can I use premixed thinset in a shower?

Premixed Thin-Set Mortar is not designed for shower floors or underwater areas; rather, use it in intermittent wet conditions such as backsplashes, countertops, and shower walls.

Is thinset mortar waterproof?

Cement board, backer board, thinset mortar, tile, grout and sealers aren’t waterproof. Cement board and backer board only offer dimensional stability in wet areas.


Last Updated: 16 days ago – Co-authors : 4 – Users : 11

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