Decrease alcove width by 1in


Old 12-30-19, 01:11 PM
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Decrease alcove width by 1in

In a jack and jill bathroom, I have two alcoves where the built in vanities are located. The sink and counter top are 20 years old and we would like to update them. The width of the alcoves are 38in and 37.5in wide which is larger than the typical 37in for a standard size granite slab and under mount sink. There seems to be a significant price adder if we wanted to match the dimensions we have, about 25%.

One thought I had was; could I reduce the width of the alcoves by adding 1" or 0.5' of thickness so that the 37in wide counter top would fit? I was think that adding 1 or 2 layers of 0.5in drywall would accomplish that. I would need to trim down the trim pieces on the sides of the cabinet to keep the cabinet centered in the opening

Would this work and is it a good idea?
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Old 12-30-19, 02:15 PM
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You could. I would probably remove the existing drywall and corner bead. Then shim the wall studs out with whatever size thickness wood you need... then hang one layer of 1/2" drywall... and replace the corner bead.

If you add 2 layers of drywall you wont have anything to fasten the corner bead to. But you could also just use the metal reinforced paper tape corners. The mud holds them to the wall... no fasteners needed.

Whatever you do, you better double check that your corners are square with a 24" framing square. A perfect rectangle (your granite) doesn't fit into a skewed opening too well. And you dont want to have to grind on it too much if you can frame it the right size/shape to begin with.
Old 12-30-19, 02:21 PM
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Another added bonus with XSleeper's method is if electrical boxes have to be brought forward. It becomes easy.
Also a good time to add electrical etc. to the bathroom.
Old 12-30-19, 08:54 PM
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good point. That is what I will do!
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