The lumber is secured to the wall studs and covered with a drywall patch.
Attach sink to stud wall.
More often than not a pedestal sink s mounting holes will not line up with existing wall studs.
Although it isn t the preferred way of securing the sink to the wall you can use adhesive caulking as well.
Add more backers as necessary to support the new drywall.
When your walls lack the studs to.
Attach the brace with angle driven screws.
How to attach a pedestal sink to the wall without studs.
For sinks that do not attach with a bracket ask an assistant to hold the sink at the wall so the upper holes at the rear underside of the sink align at the horizontal line on the wall.
If a wall stud happens to be centered directly behind the sink you need to open the wall to three studs the one behind the sink and the studs on either side of it.
When you push the pedestal sink against the wall you can screw it to the lumber behind the drywall.
Cut a hole in the wall spanning from stud to stud and then cut a piece of 2 8 to fit snugly between the studs.
Attach the mounting bolts.
Optional move the stop valves closer to the trap in order to hide them behind the pedestal.
You have to support both ends of the blocking with a stud.