How do you remove cured tile adhesive?

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We removed the tiles from the floor. All that's left is the tile adhesive (see pictures). I can't get very far with a 7 cm wide chisel because the glue is very stubborn and won't come off. The glue is about 3-4 mm high and spreads over an area of 70 square meters. After that, 60 square meters of parquet and 8 square meters of tiles need to be glued.

What would you recommend? 

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Answers

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Exactly – sand and vacuum very well while doing so. As a side note, old tile adhesive can sometimes contain asbestos.

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I removed the glue with an angle grinder and sanding cup. This was a bit of work, but worked well and it cost a fraction of the rental.

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Try Multitool first, then Hilti.

  • Look at Hilti, Festool, Makita for concrete grinders. Present sanding wheels for glue, epoxy, etc.
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Sanding is best. There are discs (similar to concrete sanding discs) for this kind of work.

Hire a proper machine for the surface treatment and don't forget the extractor.

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For processing corners, it is best to use a powerful angle grinder with a 115 or 125 mm cup disc and dust extraction.

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I would try it first with a Hilti and the right attachment. A wide angle scraper! That's exactly what it's for.

Sanding is certainly possible, but it generates a lot of dirt.

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Look for a single disc corundum disc sander or a 1 or 2 disc diamond block sander for rent.

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