Brian Gray
Posts: 339
Joined: 2004-01-21
Location: Sandusky, OH
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I probably still would do both sides, even though I think that you could probably get away with it...especially considering that you are going to screw it down.
Don't forget that there's two things happening here.....adhesives shrink slightly, causing a warp if there's no balanced shrinking happening on the other side. Second, you are creating a moisture barrier on one side but not the other.
Now even though I think that you could get away with it, here's why I would still do it. It's not that much extra work, and I keep sheets of phenolic backer for just this purpose.
Phenolic backer is basically phenolic paper without any veneer attached. It's super-cheap, and I keep this on hand for instances just like this. I would play it safe and put on a phenolic backer, and I don't have to mess with seaming veneer.
Also...19 inches is pretty wide. I think that the screws WILL hold it down, but why put the stresses on it if the solution is easy and cheap?
My 2 cents...others may think differently.
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