Tiles don't seem to be adhering to the walls. Have I used the wrong thinset?
#1
12-27-15, 01:22 PM
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Tiles don't seem to be adhering to the walls. Have I used the wrong thinset?
I had a couple mistakes on aligning two large pieces of tile (12 x 24"). Its been a little over a week, so I decided to just take a tile hammer and bust out the tile. Amazingly, I was able to remove the tile rather easily with no damage to the tile. In fact, I touched the thinset after removing the tile and it was still moist! It hadn't hardened well at all, even after more than a week of curing time. 
What have I done wrong? The only thing I can think of is that I must have used the wrong type of thinset. Also, I have already painted a full layer of Redgard waterproof membrane on the wall. Could I be that the Redgard is somehow preventing the mortar from solidifying?
What have I done wrong? The only thing I can think of is that I must have used the wrong type of thinset. Also, I have already painted a full layer of Redgard waterproof membrane on the wall. Could I be that the Redgard is somehow preventing the mortar from solidifying?
#2
12-27-15, 03:42 PM
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I assume you used ready mix mastic that came from a tub instead of a powder. The fact that the material can sit for years on the shelf without drying out tells you that if you put it on a watertight wall (with redgard) and a watertight tile, that it would never dry out. Further as you said this is on walls, is that if this is in a wet location then you need to know that mastic is never rated for use in wet locations like a shower. Thinset comes in powder form and is mixed to order.
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12-27-15, 07:21 PM
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