What type of fixing for wardrobe shelf?

[jf93kf]

Hi all. I have a built in wardrobe that has a shelf with a large space above it. I'd like to match this with another shelf above. I believe I need to use 18mm white melamine but I'm not sure what kind of fixings to use. This is going to be screwed into plasterboard and I know I'll need countersink so the screw sits flush. Any suggestions for the type of wall fixing and length of screw I could use for this?

Thanks in advance.

 

[Notch7]

Is it dot and dab plasterboard on thermalite or is it plasterboard on timber stud?

 

[jf93kf]

It's plasterboard on metal studs.

 

[foxhole]

If you screw directly above each of the existing screw positions you are likely to hit stud the existing shelf is fitted too .
Simpler method would be to make shelf with leg each end and just sit it on top of existing , also makes it easily removable .

 

[jf93kf]

Thanks for the suggestion. What's wrong with hitting the stud the existing shelf is fitted to? Would your suggestion of legs not mean the top shelf would slide back and forth easily? Or would you still screw the legs into the wall, but the fixings aren't actually holding any load?

 

[foxhole]

Thanks for the suggestion. What's wrong with hitting the stud the existing shelf is fitted to? Would your suggestion of legs not mean the top shelf would slide back and forth easily? Or would you still screw the legs into the wall, but the fixings aren't actually holding any load?

Nothing wrong with trying to hit existing studs.If you go with loose shelf it’s weight and tight fit would prevent it sliding around unless you plan on loading with heavy weight .