"Walter R." wrote in message
...
I would like to put porcelain tile on my covered patio (40x12 feet). The
patio is a concrete slab. It does get wet when the wind drives the rain
into the patio. I would like to tile it because there are a few small
lateral cracks in the concrete slab of the patio.

The concrete slab had originally been covered with a 1/16" plastic coating
that looked like tile. When the plastic overlay eventually faded, it was
painted with patio paint. That was 7 years ago. The paint is in good shape
and is adhering well to the plastic coating. I would use slipsheets over
any cracks.

Can I put the new thinset and tiles over the layers of plastic coating
plus paint? It looks clean and solid. I don't see how I can remove the
plastic coating. It's like rock.

Thanks for any input

--
Walter
www.rationality.net
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More details on the plastic coating that looks like tiles will be required.
Is it glued down vinyl sheet flooring or actual tiles? Regardless, your best
job will be if you remove the old plastic. Some may say you could go over it
but I wouldn't. A heat gun and a scraper may do the trick getting it up.
Ugly dirty work but will make for a better job with less possible failure
down the road.

Now, you can educate me. What are "slipsheets"? I get the meaning and can
sort of picture them I think. Unless you have a crack that's straight, like
an expansion joint, I would think you would just need to tile over it and
hope for the best. Enlighten me.