Vinyl tile glue removal from concrete slab then tile over


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Old 01-15-13, 08:51 PM
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Vinyl tile glue removal from concrete slab then tile over

Hi everyone,

I've seen similar questions to the one I'm about to ask, but after a bit of searching the forums I couldn't find an exact answer. So here goes. Like others have stated, I removed vinyl 12x12 peel and sticks from my bathroom which is concrete slab underneath. I have bought the 4" razor scraper and used elbow grease like someone else suggested, but even the spots where the glue has come up, there is still a fine layer of sticky glue there. I mean, the floor is so sticky it almost pulled my boots off. I am planning on laying 12x12 tile so I'm assuming I can't just tile over this stuff since I'll need a bond with the concrete.

I notice that the tiles by the toilet were very easy to pull up and the concrete isn't sticky there (I'm assuming from leaky toilets), so I now am considering trying the method of pouring hot water over the concrete and use a wire brush with a long handle to try to remove the rest of the glue. I read that idea somewhere on these forums. What application method should I follow when attempting this? Once the concrete dries, will I have any problems when laying the new tile if I use this method?

The home was built in 1988 so I don't believe there are any asbestos issues.

Thanks!
 
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Old 01-16-13, 05:18 AM
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As long as the concrete is allowed to dry completely afterward, I see no problem with using the hot water.
 
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Old 01-16-13, 05:51 AM
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Not sure hot water will do the trick, you may need an adhesive remover. Here is one I have used, 128 oz. Adhesive Remover-GKAS94325 at The Home Depot, Works really fast. *****It is also very caustic, do not get any on your skin as it will cause a chemical burn****** Protect yourself accordingly.

Brush it on with a throw away brush or solvent resistant roller. work in small batches. Let set for recommended time and then wipe clean with paper towels. Should take you down to bare concrete.
 
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Old 01-16-13, 07:11 AM
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Hot water would be my choice, adhesive removers can potentially cause trouble with tiles sticking afterward as well.
 
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Old 01-16-13, 08:04 AM
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Thanks for your replies. I think I'll give the hot water a shot...can't hurt I suppose. I also read about bonding problems when using adhesive removers due to the chemicals left in the concrete after it dries, so I don't think I'm going to take the chance. If hot water doesn't remove it completely I'll lay a skim coat of mortar on the floor, let it dry, then tile onto that and hope that does the trick.
 
 

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