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How many layers of topcoat are really necessary?

mxk3 z5b_MI
last month
last modified: last month

Working on an interior door project, wondering if three layers of topcoat is really necessary. This will be interior closet door, far enough away from windows that there is virtually zero chance of any water hitting the door. I did do all the window trim in three coats, I figured another layer of protection if rain splash does hit the trim (it happens...), but the door - ?

I used General Finishes water-based wood stain, and the topcoat is High Performance water-based topcoat in satin.

What do you think -- two coats or three?

ETA: If it matters, the wood is red oak.

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