Water Based Stain Over Oil Based? - Painting - DIY Chatroom Home Improvement Forum

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Old 05-05-2013, 09:50 PM   #1
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Water based stain over oil based?

Stripped down the deck a couple years ago, have been applying a coat of the same oil based semi-transparent stain annually. Went to get a gallon this year and the paint store no longer makes/stocks oil based stain.

Instead offered the water based or waterborne stain and said it'll perform the same and will go right over top of the existing oil based. Is that right? Stripping the deck of the old solid stain a few years ago took a LONG time and don't want to have to do it again....



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Old 05-05-2013, 09:58 PM   #2
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If the old stain is worn enough to allow penetration of the new, it might be alright.
Most stains are designed to penetrate and won't do well sitting on top of an existing material. As you probably know since you had to strip once already.


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Old 05-06-2013, 04:15 AM   #3
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You should be alright. The trend is away from oil-based products because of environmental concerns, etc.

A waterbased product may raise or check the grain more than oil-based but your older deck surface may be beyond that being a major factor.

Horrid wax based products like Thompson's Water Seal can cause all kinds of problems and obviously for waterbased stains. Don't use anything like them that promises to make water bead. If there is such a product on the deck you will have to strip it as best you can like you would a waxed interior floor.

Last edited by user1007; 05-06-2013 at 04:17 AM.
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Old 05-06-2013, 07:24 AM   #4
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Many exterior stain products are hybrids (oil/acrylic), which allows the adhesion to be very good, in addition to complying with VOC laws so the products can be actually sold. The products are also soap and water clean up (at least when they are wet), which is convenient.
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