Finishing over Water soluable dye

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  #1  
Old 12-20-13, 11:58 AM
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Finishing over Water soluable dye

My friend used a water soluable dye to stain her Oak strip flooring a dark brown color and now needs to seal it before finishing. TransTint

Her first attemp was to finish it with Polyurethane, but the oil based poly disolved the dye and made it very blotchy when applied with the lambs wool applicator.


She sanded it down and reapplied the same dye stain, and now plans to spray a Wax-free shellac (Zinsser Sanding Sealer) and then the Waterlox Satin Finish.

Will this work? I was concerned about adhesion of the shellac to the oak and the waterlox to the shellac. would she be better off using poly over the shellac?
thanks.
 
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  #2  
Old 12-20-13, 01:07 PM
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I'd go with a water based polyurethane.
 
  #3  
Old 12-20-13, 01:14 PM
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Thanks Mitch,

may I ask why water based? Personally, I like the yellow tint of the oil based poly or waterlox. I don't know what her preference is. I've been trying to convince her to use a story board to see the difference.

Is there any difference between water/oil based poly wrt the adhesion to the shellac? does she need to sand the shellac before applying the top coat (whatever she chooses)

Will the shellac have as good adhesion to the wood as poly or waterlox would? that is the part i'm more nervous about based on what she is doing.

thanks again,
 
  #4  
Old 12-20-13, 01:52 PM
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I've never used any water soluble dye but it sounds like the dye/stain wasn't dry enough before the 1st coat of poly was applied. Shellac will adhere fine to the wood/stain but I'm not sure I'd trust a water based poly to adhere well to the stain.
 
  #5  
Old 12-20-13, 03:15 PM
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I was suggesting water based thinking the oil based dissolved the dye but I think Mark is right and it was that the dye wasn't dry yet.

I agree, oil based poly is my preference as well.
 
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