Discuss How to remove dried adhesive from trowel? in the Canada area at TilersForums. The USA and UK Tiling Forum (Also now Aus, Canada, ROI, and more)

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I put one of my bucket trowels into a bucket of phosphoric acid for a few days. Trowel is now too bendy to hold addy! I find it's quite therapeutic cleaning trowels and tools. The acid will work, but don't leave it soaking for too long.
wrong acid ! sulphuric is best ,and the stronger you get the quicker it takes to clean them .......
 
M

Michele

Don't know if I was just lucky. I used a serving spoon to scrape old tile adhesive out of a container, and did not clean it right away. It sat for several days, at least 4. It wouldn't scrape off, so I soaked it in dish soap. After a few minutes I used the hard plastic edge of a sponge-on-a-stick, and little bits started coming off. I kept adding more soap and moisture and attacking with the plastic.

I may have benefited from the shape of the spoon being curved, but it's clean now, took maybe 20 minutes total. And I am relieved.
 
T

Tile Shop

I used to be a bit of a bugger for not cleaning up after myself. But now slowly getting in the habit of having a couple of buckets of clean water by my side with sponges and brushes for cleaning tools/tiles/joints as I'm going.

Before then I used to scrape as much adhesive back into the bucket as possible, but never cleaned off the residue. I used a hand held rubbing block to clean it up. Grinder in very extreme cases.
 

Ajax123

TF
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Arms
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Bucket of coca cola...

Tile cleaner is often phosphoric acid which is the same as is in coke. Occasionally it's hydrochloric. Concrete firms generally use hydrochloric acid to clean off concrete and the likes from lorries. Sulphuric acid will dissolve your trowels if yoj leave it too pong especially the strong stuff. Vinegar is acetic acid... one of the weak acids so will work but will take a long time.
 
F

Flintstone

A tiler I know regularly leaves them covered in crap and grinds them up, weird, but then again, his most popular trowel was about 4mm deep notch at one end and 10mm at the other
 

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