View Full Version : Another shower valve rough-in question
Davebutch
06-08-2009, 11:06 AM
I just plumbed a Moentrol 3570 rough-in valve. The instructions say to mount the valve so that the plaster guard will be at the face of the finished wall. Since the finished wall will be board plus tile and thinset, I'm guessing the thickness to be at 1 1/8. If I mount the valve body accordingly, what happens if I'm off by 1/8 or so? Is there any wiggle room as to the depth?
jadnashua
06-08-2009, 11:58 AM
Somewhere on that plaster guard, there should be min/max lines. If the finished wall is between those two then the trim will fit. Some people like less projecting out, so you may want to go towards one end of the spec. My guess is with the plaster guard flush, you are near one end...if the wall ends up a little thicker, the trim won't fit without buying an extension kit.
If it sticks too far out, there's no way to fix it except to reset the valve which may be tough if you don't have access. If it is too far in, you may need to purchase an extension kit (if even available), which may look funky. So, look for the min/max lines, and judge accordingly to get it somewhere in between.
Most people prefer the looks if it isn't projecting into the shower near the max.
Moen has a great deal of leeway beyond the plasterguard dimension, and if it is too deep, there is an extension. Just do not get it too shallow because there is no way to compensate for a valve too close to the finished wall.
Davebutch
06-09-2009, 10:27 AM
Moen has a great deal of leeway beyond the plasterguard dimension, and if it is too deep, there is an extension. Just do not get it too shallow because there is no way to compensate for a valve too close to the finished wall.
That's sort of what I figured: too deep is better than too shallow, but needed some confirmation. Thanks to all for the guidance.
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