I wanted to re-stain my banister and stringers up my stairs. Currently they are a stained light colour then covered with polyurethane. I want to do them in a darker colour. My thoughts would be sand till bare wood then stain 2 coats the poly 2 coats. I read that you can use polyshades over the current coating with only a light sanding. Thoughts? Also what products do you guys recommend?
It would take a heck of a lot of sanding to get down to raw wood again but if you have the time, go for it. There are other options though.You could sand it lightly with 220 and apply a gel stain and poly.
Do not use polyshade for anything!!! Unless your into to a blotchy finish.
Going to have to sand off all the old poly, any left behind will not except the stain.
Use a gel stain not liquid for more control.
Tape off or cover anything you do not want the stain on, there's a reason they call it stain.
It's to each there own but I like the look of a wipe on poly. Main thing I like is instead of having to sand it all off and start off when it wears off unlike a reguler poly I can just wipe some more on.
This is not an easy thing for a DIY- but it is possible to tint coats of poly ( not the pretinted stuff- but custom made on the spot), and layer it up to make it darker.
This is by far the easiest solution - but is not unskilled.
I have a job coming up to do exactly this, and I will use Zar Ultra Max (waterborne Alkyd poly) and use transtints for color.
I believe Brushjockey has offered you the best solution.Don't know why I didn't think of it, although I have used gel stain over a sanded poly and polyurethane over the gel stain with very good results.
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