I am putting the finishing touches on a bed. The mattress is supported by 2 sheets of plywood, 41″ x 61″, with 1″ holes drilled on a grid for ventilation instead of a box spring or box support. The plywood is poplar from china, or so it says, it looks like bleached poplar to me. Its pretty fine grained and void free, so splinters are not a problem.
Anyway, should this be sealed with a spit coat of shellac or is it the custom to leave the wood bare?
-Michael
Replies
If it's the final color your happy with, I would give it a coat 1 pound cut of super blonde - same as Zinsers seal coat. Sand off nubs if any and maybe a second coat followed by a buff to whatever finish gloss you want. The poor little tree gave it's life for you, the least you can do is give it a shirt and pants to keep it happy.
BB
I'm not interested in appearance as much as I am function since it won't be seen, except when the mattress is flipped. I am concerned that a mattress sitting on a shellacked surface might stick or cause a moisture problem.
I'm just wondering if there's a rule of thumb on this.-Michael
Michael,
Fresh shellac dries very hard and won't become sticky except at very high temperatures. I built a bed platform of the same design, gave it a couple of coats of shellac, it is actually glossy, and have had no problems with the finish sticking to the mattress. I probably used Zinnser's Sealcoat.
If you don't put on a finish, wood fibers will start to rise up from the face of the plywood over time and they will make it very hard to shift the mattress or slip the edges of sheets between the mattress and the ply.
John White
Shop Manager for FWW Magazine, 1998-2007
Thank you very much, that's exactly what I needed to know. :)-Michael
Absolutely apply shellac to the wood. It's the best sealer you can use for this application.While no finish actually completely seals, as John says, the unfinished wood will respond to moisture in the atmosphere much more than one with a coat or two of shellac.Unfinished wood, especially plywood will begin to have a very objectionable odor if unsealed, and will attract and hold dust that can't be adequately brushed off the surface or out of the pores and fibers.Rich
Thanks, I've already started slobbering the stuff down :)-Michael
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