Hanging mirror - molly plug

[peter_sweden]

Hi

I am going to hang a 20 kg heavy mirror on a drywall. I have this set:

Should I use 4x32 mm or 5x52 mm? What diameter should I drill with?

Kind regards,

Peter

 

[AndersS]

You should use a molly made for the thickness of the board you have in the wall so that the material is properly pressed against the back.

 

[peter_sweden]

You should use a molly made for the panel thickness you have in the wall so that you get the material properly pressed against the back.

How do I check the panel thickness? What thickness are 4x32 mm and 5x52 mm made for?

 

[Stefan N]

Both are for single drywall; if you have double drywall, it's a different model with a longer neck.

 

[peter_sweden]

How do I check if I have single layer drywall?

 

[Stefan N]

You'll see it when you drill.

 

[peter_sweden]

Okay, should I use 4x32 or 5x52 mm for a 20 kg mirror?

 

[Peter2400]

Ok should I use 4x32 or 5x52 mm for a 20 kg mirror?

It depends on how many screws you plan to use for the mirror, here you can get some tips on cavity fastening,
http://www.fischersverige.se/Portal...tning/_dokument/Kapitel_halrumsinfastning.pdf

 

[Lexington]

4x32 should, after a simple Google search, support 18 kg each, and be drilled with an 8mm drill. So if you are using two molly, 4 would be enough.

But considering the brand, I would probably use two 5x52, which are drilled with a 10mm drill and should support 2x35 kg.

 

[Peter2400]

4x32 should, after a simple Google search, support 18 kg each, and be drilled with an 8mm drill bit. So if you need two molly, a 4 is enough.

But considering the brand, I would probably use two 5x52, which are drilled with a 10mm drill bit and should support 2x35 kg.

According to Fisher's table, the size of the molly plug does not matter when attaching to plasterboard.
They specify 20 kg with a safety factor of 3 in 12.5mm plasterboard.

 

[Lexington]

According to Fisher's table, the dimension of the molly plug does not matter when fastening to plasterboard.
They specify 20 kg with a safety factor of 3 in 12.5mm plasterboard.

Just took the info from the internet from someone who read the packaging, to be honest I don't understand the meaning of "20 kg with a safety factor of 3 they specify in 12.5mm plasterboard"

But in any case, two molly plugs of any kind should suffice. However, first check if it's single or double plasterboard before you start screwing.

 

[Ulam]

But if a five can handle 35kg, then why are two Molly needed for a 20kg mirror?

 

[Lexington]

Well, there can be many different reasons.
For example, the mount below is difficult to hang straight without two screws.

 

[Ulam]

Yes, of course