Attaching sink to plasterboard wall. Is this the wrong wall plug?

[Tom079555]

Hello.

I purchased a new sink online and plan to fit it tomorrow.

It will be put on a plasterboard wall, but the fittings it arrived with look wrong.

I have attached an image of what it came with, but there were zero instructions included.

Is this type of fitting for a masonary wall?

If it is no good, please can you link me to something that would work.

 

[Koolpc]

Surely you are not attaching to just the plasterboard?

Thats a masonry fitting.

 

[jeff the gasman]

Totally wrong!
If it’s wall mounted you’re going to need a different plan!
If on a pedestal get some plaster board plugs and a small dab of adhesive behind the basin!

 

[terryplumb]

Is it a stud wall ( plasterboard on timber )? Or plasterboard dot and dabbed onto masonry ?

 

[Tom079555]

I will clarify a little more.

The sink is rather large, but will be stood on a pedestal. The wall attachment will be to make sure its held closely to the wall.

The wall is timber and plasterboard.

 

[Madrab]

Regardless of whether it's on a pedestal or not, I would always want the basin to be screwed into something substantial, wood or masonry anything less runs the risk of the basin getting pulled off the wall.
Some will think it's ok as the pedestal will hold the weight, but it's always best to consider worst case scenario and if the basin could be leaned on/ pulled forward or sideways by accident etc then it needs to hold, otherwise it's pulling itself straight out of the wall onto someone.

 

[thomp1983]

Sorry wrong thread

 

[Diver Fred]

You need to find the wall Studs and then determine if the studs are wood or metal. Only fix into the studs.

You may need to cut an access hole into the plasterboard behind where you would like to fix the sink to find the studs and determine the the material. A hole just big enough to get your hand in.

Wood studs, probably are 70mm thick so use M6x80 wood screws as a minimum depending on how thick the sink fixings is.

Metal studs - hopefully others will advise.

But, I repeat only fix to the studs.

 

[Deleted member 174758]

Metal studs - hopefully others will advise.

But, I repeat only fix to the studs.

For metal studs it is safest to cut out a section of plasterboard and fix a 15 to 18mm thick plywood or OSB patress between two of the studs using drywall screws, then replace the PB and make good. The sink it then screwed through the OB into the pattress using wood screws

If that isn't possible, you can attach to the MF stud using 4mm wood screws ,(as anything bigger than 4mm will normally not pierce the metal), but I'm not sure if 4mm screws, even with washers fitted, will be sufficient for the task

BTW I'm not a plumber (joiner) but on big jobs and refurbs this is the sort of thing we "wood butchers" get tasked to do