Mounting heavy cabinet

[Alwayslearning22]

I have to mount a heavy cabinet onto my bathroom wall. It’s a finished wall and not going to hit any studs. 

it’s an Ikea Hemmes bathroom cabinet. 
 

Ive attached a picture of my wall make up. 
It’s an exterior wall in a timber frame house with 35x45 service battens on the studs. 
 

im considering cutting open the wall and adding plywood not sure how I would secure it to 35mm battens though. 
 

any help would be much appreciated 

 

[Russell griffiths]

How heavy ?

some of the metal toggle fixings can take a large amount of weight now. 
you might need to chuck the original fixings away and add more to the cabinet to spread the load. 
 

show us what you have, opening up the wall would be the last resort sort of situation. 

[garrymartin]

The biggest IKEA Hemmes bathroom cabinet I can find still weighs less than 40KG. Even when loaded up, there are plenty of fixings that will work without you having to cut out plasterboard.

 

As @Russell griffiths suggests, toggle fixings would work, but I prefer to use GripIt Plasterboard Fixings. They're available at places like Toolstation or Amazon, and come in varying sizes depending on the load you're fixing. The 25mm versions can handle 113KG - see https://www.gripitfixings.co.uk/

[ProDave]

Find the location of the studs.  Unless it is a very small cabinet, it is very likely at least one stud will be behind the cabinet.

 

So I would fix the cabinet with plasterboard fixings, AND one or 2 screws directly through the cabinet (additional holes drilled for this) straight into a stud.

 

I have done this for kitchen cabinets and they have not fallen down yet.