How Long Does Stain And Poly Last In The Can? - Carpentry - DIY Chatroom Home Improvement Forum

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Old 03-18-2012, 09:52 AM   #1
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How long does stain and poly last in the can?

I'm working on refinishing an antique table and I'm finally ready to stain and poly it. I already have a can of Minwax stain and a can of Duron poly from about 8 years ago when we built our house. Is this stuff still okay to use for a table top? After putting this much work into refinishing the table top I don't want to put something on it that isn't going to bond well. I also have two new cans of Minwax stain and Minwax poly that I purchased yesterday... but if I can use the old stuff and expect it to hold up I can take the new stuff back.

Thanks for any suggestions!


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Old 03-18-2012, 12:29 PM   #2
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Pretty definitely not. The prevailing wisdom is that polyurethane has a shelf life of two years, less if previously opened.

I'm not sure about the stain. I think if you test it and it dries adequately then you'll be fine but I'm no coatings expert.


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Old 03-21-2012, 04:54 AM   #3
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stain will last indefinitely but settles. A lot of mixing by stirring will be needed. Poly has a one to three year shelf life depending on type.
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