masonry paint on new render patches

20 Aug 2009
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United Kingdom
i intend to repaint some exterior rendering with sandtex smooth masonry paint. large areas of the wall have recently been patched. i was always going to give the patches one or two coats before i paint the whole wall; but should i thin the paint down first on these areas?

the tin implies not. the plasterer said not. 18 years ago when it was originally rendered the paint wasn't thinned, but it nevered flaked off anywhere.

the rendering was done a week ago.
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Sandtex smooth is an excellent masonry paint and it's quite thick (the last batch I had was) so I'd thin it about 10% roughly first. It certainly wont do any harm in these circumstances.
Your biggest problem, is making sure the new render is dry. I wouldn't go near it with the paint, if it's not dried out yet.

I always use a damp meter to check it...but that's just me ;)

Sandtex smooth eh...... lovely stuff.
all done now thanks and just before the rain. you like sandtex smooth then!?

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