Expander for drywall doesn't work, why...?

[jenbod91]

Hello,

Right now, I am building a wall. I have a 45x70 stud that needs to be attached to a drywall. I have tested 2 different drywall plugs and expanders. Various lengths of screws, but nothing works. You can easily pull out the stud. The plug hasn't expanded, and furthermore, the screw just "spins" when you screw it in fully. What am I doing wrong? Any other tips for attaching the stud to the drywall?

 

[Stefan N]

What have you used? Molly?

 

[Violina]

Have you tightened the expander before mounting the rule?

 

[jenbod91]

What have you used? Molly?

these I have tried with

 

[jenbod91]

Have you tightened the expander before you mount the rule?

No. What do you mean by "tighten the expander"?
Shouldn't it expand when I screw through the rule + the plug?

 

[GoC]

You have screws that are too short.
If I understand you correctly, you have drilled through the regeln and are going to screw it against the plasterboard.
The screws must be long enough. The thickness of the regeln plus the length of the plug. Otherwise, the screw will not grip the back part of the plug and can "fold" the expander.

 

[jenbod91]

You are using screws that are too short.
If I understand you correctly, you have drilled through the stud and are going to screw it against the drywall.
The screws must be long enough. The thickness of the stud plus the length of the anchor. Otherwise, the screw won't catch the back end of the anchor and can "collapse" the expander

Ok! But I tested this white one and the longest screw, but it still didn't work. Do you know why?

 

[Centano]

Do you have single or double plasterboard on the wall?

 

[jenbod91]

Do you have single or double drywall on the wall?

single

 

[tergo]

is there something to attach at the ceiling and at the floor? straight board and mounting glue in the middle and screws at the top and bottom

 

[jenbod91]

I have already attached a joist to the ceiling and will attach one to the floor. Do you mean that I should only glue the joist to the wall and fasten it to the ceiling and floor joist? Is that enough?

 

[jenbod91]

there should be something to attach to up at the ceiling and down at the floor?, straight stud and mounting glue in the middle and screw up and down

I've already put a stud in the ceiling, and will place one in the floor. Do you mean I should only glue the stud to the wall + attach it to the ceiling and floor stud? Is that enough?

 

[Centano]

The white plug should work with the longer screw. You might have drilled a hole that's too large in the gypsum, causing the plug to just rotate and not grip.

 

[jenbod91]

The white plug should work with the longer screw. You may have drilled a hole that's too large in the plaster, causing the plug to just rotate and not grip.

Well, it should be 6mm. I've tested with both 5mm and 6mm drill bits.

 

[tergo]

Already installed a beam on the ceiling, and will install one on the floor. Do you mean I should only glue the beam to the wall + attach it to the ceiling and floor beam? Is that enough?

Yes