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screed not dry

Postby welsh brickie » Fri Apr 08, 2011 8:29 pm

i have been watching the tilers next door install a screed on a roof terrace they lay a sand and cement screed on a dry concrete base to get their level,and then tile directly onto it 2 hours later.Now its hard enough to stand on,But surely it should be left to dry.
Has anyone done this method as I have never seen it done and are there any complications afterwards.
welsh brickie
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Simply Build It

Postby chris_on_tour2002 » Tue Apr 12, 2011 10:16 pm

hi welsh brickie,

never seen it done this way before but i guess it would be no different to laying slabs or bricks into wet concrete. why use another layer of adhesive, provided the tiles bond with the cement in the screed i suppose it makes sense especially as it's exterior.

wall tiles used to be set with a cement mix before tile adhesives came onto the market.

don't know why they left it for two hours though - i'd have thought that this technique would work better if the tiles were laid directly onto fresh screed.
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Postby welsh brickie » Fri Apr 15, 2011 10:16 am

thanks chris for your reply,It seems to have set well enough I was just curious to see if the tiles would pop as time goes by
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Postby TPTiles » Sat May 07, 2011 10:22 pm

The wait for it to become walkable seems strange. you can lay some tiles into wet cement but its very unusual these days.
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