I'm doing a mild bathroom remodel and plan to install a wall mount sink since it's a small half bath and that would open the room up. I had originally planned to install a 2×6 between two wall studs to mount the sink too. Unfortunately it turns out the hot water supply line to the entire house comes into this wall, and the drain vent goes right behind it too, so I only have enough clearance to fit a 1×6 in there instead.
Would a 1×6 secured with screws and liquid nails be sturdy enough to support a wall mount sink? The sink itself weighs around 40lbs but I figure at some point someone will lean on it so it's got to be secured pretty well.
Best Answer
I would use something wider than a 1x6 - why not? Even if the mounting plate is smaller, the wider board will be easier to hit, and will be stronger.
If yellow pine or douglas fir are available they are a lot stronger than white pine.
I don't trust toe-nail attachments with skinny boards. The old school way to do it would to be notch the studs so the board lays in the notch, then face nail (or better, face screw) it into the studs. But that's a bit of work, not too bad with an oscillating tool but still.
The easier alternative would be to use an angle bracket. For example, the Simpson Strong Tie L70Z is not made for this exact purpose, but I think it would be suitable, and it would be easy to make a very strong attachment.