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Can I use a solvent based undercoat over water based primer?


 
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dazzawazza

from United Kingdom

Joined: 04 Jun 2007
Posts: 38
Location: London,
United Kingdom

PostPosted: Wed Jul 11, 2007 9:18 am Reply with quote

Yesterday I purchased some quick drying white primer and painted my second story outside windows and surrounding area. As it was quick drying I stupidly assumed that the primer was solvent based. It wasn't until I was cleaning the brushes that I realised it was water based.
Now, the tins of under-coat and top-coat paint I have are solvent based. Can I use these or should I purchase some new water based paint?
Painting second story windows has been a big job so I want it to last as long as possible. Thanks
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slow fade

from United Kingdom

Joined: 17 May 2007
Posts: 26
Location: Glasgow,
United Kingdom

PostPosted: Wed Jul 11, 2007 10:27 am Reply with quote

yes. icon_razz.gif



Just make sure you give the primed area a sandpaper down between coats to give it a key.
I do it all the time anyways!!
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Robbie uk

from United Kingdom

Joined: 09 Apr 2007
Posts: 1443
Location: Cheshire,
United Kingdom
Thanked: 161 times

PostPosted: Wed Jul 11, 2007 5:44 pm Reply with quote

Thing to remember is that water based paints dont penetrate the timber as well so although the solvent based paint will go over it ok it is still only as good as the paint underneath. Water based undercoats tend not to want to stay on timber outside when it starts to expand and contract and could flake off.
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