How long does wood stain stay good?

[Mark Blatter]

Did a quick search and couldn't see anything on this question. I have some stain that is 4-5 years old. I have used it recently and not had any issues, but thought I was ask if others have had problems. It is a SW stain that I had mixed up for me.

[Rich Riddle]

Are you discussing pigment stain or dye stain?

http://www.woodworkersjournal.com/un...pigments-dyes/

[Mark Blatter]

Are you discussing pigment stain or dye stain?

http://www.woodworkersjournal.com/un...pigments-dyes/

Sorry, should have been clear. I am talking about pigment stain.

[Joe Kieve]

I have used some oil stain that was over 20 years old with no problems.

[Andy Giddings]

Not sure the Pigment will be an issue, more whatever the carrier is (the liquid). If its still fluid and working without an issue seems like you are good to go

[Prashun Patel]

It depends. The binder/varnish in some pigment stains can harden over time. Which means that while the remainder of the stain may not color evenly. After having this issue with Minwax Weathered Oak finish this year, I realized it's best to decant old product into a clear container, stir well, and make sure you achieve uniform consistency. Look for smudge in the bottom of the can.

With solvent-based dyes, if your container is not sealed well, the solvent can evaporate making it more concentrated than you might anticipate.

Both of these things have happened to me.

I have, however, never had a problem with 'old' stain not drying properly.

[Mel Fulks]

The pigment stains never "go bad" .They are bad before they arrive in the cans.

[Wayne Lomman]

Definitions: pigment stain is pigment in a solvent base. If it is liquid, it works.

Coloured varnishes or whatever are not a stain. They are a toner. Any product like this will have a shelf life. If an old tin forms a skin, it is toner, not stain and best consigned to the bin. The why of this is another topic. Cheers