Glue plasterboard to existing plasterboard wall

[tlundberg]

I was thinking of gluing drywall panels between the studs in an existing drywall wall (which is open on one side) to create double drywall.

But how do I glue them? I've read that regular wood glue works well, but how do I apply pressure to the panel while the glue dries?


The gray line is existing drywall, the yellow squares are vertical studs, the green lines are new drywall panels that I plan to glue.

 

[Angelin]

Use a tile adhesive/fix such as Ardex S48. No need to apply pressure on the tile then.

 

[para]

Why do you want double gypsum?

 

[Matti_75]

There are special gypsum board adhesives in tubes and screws intended for attaching gypsum to gypsum.

 

[tlundberg]

Use a tile adhesive/fix like Ardex S48. No need to apply pressure on the board then.

S48 is so damn expensive! Are there any cheaper alternatives? Preferably ones I can buy in a local store.

Why do you want double drywall?

To get soundproofing. I'm working on a kids' room wall-to-wall with the TV in the living room.

There is special drywall adhesive in tubes and screws intended for attaching drywall to drywall.

Sounds promising. You don't know what the adhesive is called? I've also been considering screws. But they must be a maximum of 25mm so they don't go through the board! Are there ones made for drywall to drywall?

 

[tlundberg]

Found Bostik Gypsum Board Adhesive on Cheapy. Does it work without holding pressure against the board?

 

[Nimajneb]

shouldn't an OSB board do the same job? plus you get the other advantages of the wood board behind gypsum

 

[Matti_75]

shouldn't an OSB board do the same job? plus you get the other advantages of the wood board behind the plasterboard

Osb doesn't dampen as well as plasterboard.

 

[Matti_75]

Sounds promising. You don't know what the glue is called? I've also considered screws. But they can only be 25mm max so they don't go through the board! Are there any made for drywall to drywall?

I've used both Gyprocs and Europrofils glue with good results. However, I've only seen drywall screws in 38mm length.

 

[santos]

I have glued plaster to concrete and used pl400/600, it's stuck like a rock.

 

[tlundberg]

Was it the floor or walls you glued on?
If it was the walls, did you do anything special to apply pressure to the drywall while the glue dried?

 

[Nimajneb]

When I last glued plasterboard to a wall with Pl600, I used long quick clamps which I reversed and tightened against the opposite corridor wall and had studs against both the gypsum board and the opposite wall.
In this case, it should be possible to use the same technique but you screw cross studs onto the open wall as a brace.

 

[tlundberg]

Smart! Thank you so much
I'll probably have to temporarily extend my reglar a bit, my quick clamps will likely be larger than 70mm if you flip them. But it sounds doable, as long as it's enough to extend 45mm. I'll measure when I get home!

 

[tlundberg]

My quick clamps are at least 14cm when I turn them to press apart. So they don't fit, if I understood how you were thinking.

But I came up with another solution, thanks to your ideas If I place a 70-rule vertically along the plasterboard, it will stick out 13mm (the thickness of the plasterboard) outside the existing wall studs. If I then screw a couple of wooden pieces horizontally across the 70-rule between two existing wall studs, the wooden pieces will press in the 70-rule, which in turn will press the plasterboard into place! A little picture might make it clearer what I mean (compare with the picture in the first post so you see what's what and what I've added)

 

[Nimajneb]

Should work, maybe you should go for 2 70 reglar.