Mounting Vanity to Wall

[Bushlander]

We are wanting to mount a 1200mm x450mm vanity to the wall approx. 200mm off the floor. Just wondering what the best way would be to support the front part of the vanity to stop it from sagging in the future. Any ideas would be greatly appreciated.

[Pulse]

If mounted to the wall studs it won't sag. Use big/long screws after finding the studs with a stud finder. If you don't have a stud finder just punch a small hole in the wall to find the studs, just make sure the hole is behind where the vanity will sit.

Cheers
Pulse

[Skew ChiDAMN!!]

You didn't say, but it sounds like you're hanging a free-standing vanity rather than one designed to hang?

If so, the front may not sag but there's a fairly good chance the base will... or worse, start to seperate. In most modern ones, the base is designed to support the weight, not be the weight. ;)

It might be possible to hang some large(ish) shelf brackets "upside down" to the studs, for some extra support. This'd be fiddly, as they'd also move the vanity out from the wall unless they were recessed in.

[Sybarite]

The type of manufacture IS very important to whether the unit will hang or not.

Have a look at the base. If the gables and back screw into the sides of the base plate (as per a lot of carcass systems) then the box has been assembled the same way as our Wall Units are designed to.
These are fastened to the wall by screwing straight through the SOLID back into your mounting points. It is correct that a floor unit is intended to take the load on the legs, but this unit is shallower and probably won't have two shelves full of crockery.
Floor Units are mostly made the same way as the Wall Units, so there is no difference between a wall unit and a floor unit structurally; BUT a wall unit is often only 318mm deep and a floor unit is 575mm. Your 450mm is halfway in between, but I would happily hang a Microwave Cupboard this deep on a wall using standard manufacture.
On the other hand, if for some reason the gables and back are screwed DOWN into the base you have a structure which is less reliable if suspended only from behind, and would require more intricate fastening solutions as also already suggested.

Respect, all.

Earl