It doesn't seem like renovation plasterboard is a big favorite, but I decided to put it up in our tiny upstairs bathroom anyway. I have removed a wet room wallpaper, and the old plasterboard looks miserable.
Where I bought the renovation plasterboard, they only had 900, and they said they didn't want to sell 1200 as it broke easily during handling. Now that I'm about to mount it on the old plasterboard, some studs are missing since they are spaced at cc 600.
The seller said that it's common to install the plasterboard horizontally in such cases, but then a stud will be missing for the horizontal joint. Does it matter when there's already a layer of plasterboard on the wall? I'm not sure if using adhesive is a good idea either, as it seems difficult to press the board against the old one. Or is there a special type of expansion screw that can be used to join the boards?
It's a bit too late now, but maybe it would have been better to remove all the old plasterboard and install completely new ones.
/Mats
Where I bought the renovation plasterboard, they only had 900, and they said they didn't want to sell 1200 as it broke easily during handling. Now that I'm about to mount it on the old plasterboard, some studs are missing since they are spaced at cc 600.
The seller said that it's common to install the plasterboard horizontally in such cases, but then a stud will be missing for the horizontal joint. Does it matter when there's already a layer of plasterboard on the wall? I'm not sure if using adhesive is a good idea either, as it seems difficult to press the board against the old one. Or is there a special type of expansion screw that can be used to join the boards?
It's a bit too late now, but maybe it would have been better to remove all the old plasterboard and install completely new ones.
/Mats
Renovator
· Näverkajakens födelseort
· 797 posts
Run with glue, works as well as can be
Yes, gluing the boards seems to be the right solution. I finally found an instruction from Norgips, and plaster adhesive is apparently what you should use for gluing. This solves it and makes it much easier as I don't have to worry about any studs. What worries me a bit is that I've already screwed up a board on a wall where the studs matched. Unfortunately, it says that screwing is not enough; you have to glue. I don't really understand why. http://www.norgips.se/viewres/index1,1779.htm/2a4cf72cbf1aa82b74ae311b92fae44d0529736b.pdf
/Mats
/Mats
glue with Ardex S48, the adhesive and the drywall react with each other and form an almost homogeneous unit, which does not happen with screws.
Unscrew your board and glue it up instead, drive in some screws here and there if needed, but unscrew all when the glue has cured.
Unscrew your board and glue it up instead, drive in some screws here and there if needed, but unscrew all when the glue has cured.
What is the risk with screwing? You screw regular drywall, and it works fine. There is a risk that the screws go through the board. The middle of the board is also marked with small lines at regular intervals, thought it was a marking for screws.
I bought gypsum mortar that is supposed to be intended for installing drywall, and Norgips recommends gypsum mortar, so I hope it works as well as Ardex S48
/Mats
I bought gypsum mortar that is supposed to be intended for installing drywall, and Norgips recommends gypsum mortar, so I hope it works as well as Ardex S48
/Mats
In some cases, it doesn't hold true, but the standing board I've set up is secured with three rows of screws, one at each edge and one in the middle. I glue the rest of the boards. Feels like it's secure enough. It was a bit of a tight fit and difficult to get it into the small room, so I'm glad I don't have to remove it.
/Mats
/Mats
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