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Mastic for travertine shower? Bill V??

Posted by peytonroad (My Page) on
Tue, Jun 2, 09 at 21:19

The plan is to use a concrete bed for the master shower floor. UNder that is the liner. We plan on stone octagon flooring in shower. Is that acceptable? Do you use thinset/mastic for the shower? What about stone walls?? Gosh, some people have differing ways to lay tile and it makes me nervous!

Suggestions hints or help appreciated!


Follow-Up Postings:

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RE: Mastic for travertine shower? Bill V??

NO NO NO NO NO!!!!

No mastic in the shower-- EVER.

No mastic with travertine, or ANY stone-- EVER.

No mastic on floors, and ESPECIALLY SHOWER floors-- EVER.

Gosh, some people have differing ways to lay tile and it makes me nervous!

Which is why I spend as much time on line as I do. In all actuality, there ARE many different methods which are acceptable for many of the things we do. Ask a question over at John Bridge's, and you'll see what I mean. However, the widespread use of mastic is not one of them. It DOES have its uses, but they're very specific and limited, and NONE of those uses include wet areas, floor tile, or natural stone.

If that's what your installers are intending, I'd get rid of them now, before they do something that's NOT so noticeable, and shortens the life of your tile just the same. These guys are shoemakers.


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RE: Mastic for travertine shower? Bill V??

Bill, your reply is a little vague. Can you clarify for me regarding mastic in a shower? <8^P


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RE: Mastic for travertine shower? Bill V??

Let me translate Bill's posting :)

Ques: What do you say to mastic?

Ans:
Dutch – nr nee
German – nein
Greek – αριθ όχι
Hebrew – לא
Hindi – नहीं
Japanese - いいえ
Korean – 아니오
Indonesian – tidak
Polish – nie
Portuguese – nγo
Russian – нет
Swedish – nej
Thai – ไม่ใช่ ไม่อยาก
Turkish – hayır
Ukrainian – немає ні
Vietnamese – khτng khỏng


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RE: Mastic for travertine shower? Bill V??

Yeah-- what he said!


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RE: Mastic for travertine shower? Bill V??

The plan is to use a concrete bed for the master shower floor. Under that is the liner.

What is under the liner? If it is going flat on the floor that is wrong. The liner must have a slope under it so that any water that gets through the mud bed to the liner (yes, water will go through the tile and grout) will still get to the drain.

Oh, and the reason for no mastic in the shower - or any wet area - is that water can re-emulsify the mastic. The reason why you don't use mastic with stone is because mastic can actually stain the stone.


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RE: Mastic for travertine shower? Bill V??

Wow, thanks for the clarification of NO mastic, I was unsure until I saw it in Greek!

So is thinset and mastic the same thing?

I am in nursing by trade and I know most all about that! But not on tile 101. Thank goodness for professtionals her on GW that do that for a living!


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RE: Mastic for travertine shower? Bill V??

So is thinset and mastic the same thing?

NO! Real thinset comes in a bag in powder form that you mix with water. It is cement based and cures by chemical reaction. Mastic comes pre-mixed in a bucket. Sometimes the mastic makers try to trick you by calling their product "pre-mixed thinset", but it is NOT real thinset. It is mastic with some sand added. Mastic sets up by drying, and if it comes in contact with water can "un set". Just remember bucket = mastic = bad for showers, other wet areas and under large format or stone tiles.


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RE: Mastic for travertine shower? Bill V??

So is thinset and mastic the same thing?

Technically speaking, by strict definition, yes-- mastic is a form of thinset-- that being an adhesive that's applied in a thin bed to set tile into. However, thinset has come to mean any portland cement based mortar made specifically for the installation of thin bed tile after mixing either with water or a liquid latex additive, while mastic is usually referred to as organic adhesive, or "premixed thinset". I saw a new one the other day at Home Depot-- on the side of the bucket they're calling their mastic "premixed thinset mortar". I could see how they got away with calling it thinset, because as I just said, technically speaking, it is. But mortar? I'm surprised no one's challenged them legally about it.


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