Return to the Woodworking Forum | Post a Follow-Up

Water-based poly on Douglas fir

Posted by mtnlaw (My Page) on
Thu, May 7, 09 at 17:46

I ordered Doug fir trim for our new house to blend with the fir post & beam timberframing. I had a company prefinish it with a water-based poly called Durathane. I have a couple of questions about this.

First: I was a bit disappointed in the trim as it is not as deep rosy/red as the timbers. I know Doug fir darkens with exposure to light and the timbers have indeed darkened since the framing was done months ago. Bu the trim is almost pine-looking it is so light. SOme of it does have some darker grain. Some is vertical grain and some is flat grain. I could not afford all CVG, or clear vertical grain which is ridiculously expensive. Anyway, my first question is: will water-based poly impede the darkening process? I don't want it to. I did read somewhere that an oil-based stain or finish will darken it more than water-based.

Second question: is there any product I can use to apply over the poly to give the wood a darker look but still show the grain? I tried Minwax polyshades but that stuff looks crappy and is hard to apply evenly. I've also tried Zar Plus which is a poly/stain mix and it looks better but not great.

Thanks for any info.

Follow-Up Postings:

RE: Water-based poly on Douglas fir

Even though your existing finish is "Water-based poly" it may be a bit of a misnomer. I would be leery about applying an oil-based poly over the top without running some tests.

You can get the finish darker by glazing -- using a water-based glaze, then applying more Durathane.

You are smart to avoid the 'all-in-one' products such as Polyshades.

RE: Water-based poly on Douglas fir

Bobs - thanks for the feedback. I'm not familiar with glaze. I'll do a search, but in the meantime, what is it and do you know where I would find it?

RE: Water-based poly on Douglas fir

"I'm not familiar with glaze."

Dye or pigment added to a clear finish produces a glaze.

It is a slightly tinted finish that can be applied to darken the final appearance.

It has been used to color sapwood, change the appearance of finishes, etc.

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Woodworking Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here