doing a job where the whole concrete floor has vinyl tiles stuck down with what looks like bitumen, all are very well stuck down, been there for years and years.
Is it ok to tile directly over these??

hi there yes you can go over them but first make sure you de -grease them first ,seal with a good bonding agent and let it dry out first,rgds

cheers brian, that's what i was thinking

Personally I'd rip them up, IMO

I wouldn't feel comfortable tiling over them either.

Have you tried to remove them or do they just look to be stuck ok..?

yes i'v removed a couple just to see how well stuck they are........ and they are stuck like **** to a blanket!

I would never tile over anything apart from the original substrate

Originally Posted by CCTiling

I would never tile over anything apart from the original substrate

There's actually an arguement here in that no matter how well you strip off the old tiles you will be unlikely to get down to bare concrete so what is the difference? I'm playing devil's advocate here so I'm keen to hear other's views.

i cant tell you the amount of vinyl tiled floors that i have gone over with no problems whatsoever,if they are stuck like that the best way that i know is to get a blowtorch and warm them up first berore getting a scraper under them,thats how they used to fix them years ago,by warming them up first.IMO a waste of time and customers money if no need for them to come up in the first place.