Why not nail renovation plasterboard on lightweight concrete wall?

[Jack2001]

As the title says... why is it always recommended to attach renovation plasterboard with tile adhesive or construction adhesive instead of just nails if the substrate is relatively even lightweight concrete walls? I suspect many will say that it doesn't sit "tight" enough against the substrate if you just nail, but according to most plasterboard suppliers, you should apply construction adhesive in rows with 200 mm spacing, so the board will still "float" between the adhesive rows. If I nail at 200 mm spacing, the plasterboard actually sits tighter against the wall than with construction adhesive. I plan to angle the nails slightly downwards so there's no risk of them moving over time and coming loose.

As mentioned, the substrate in my case (Siporex panels approx. 900 x 2400) is relatively even, but there are multiple layers of poorly applied wallpaper that are stuck like rock, which I want to cover. From previous experience, it's a hell of a job to remove the old wallpaper with steam from a wallpaper remover. So there's no risk of large cavities forming behind the plasterboard.

Grateful for any tips and advice!

 

[FDT]

I have screwed renovation plasterboard with long drywall screws directly into a plastered lightweight concrete wall. Worked for many years...

 

[jawen]

Isn't it just a matter of spackling up the wall?

Seems excessive to put up new drywall.

 

[Jack2001]

Isn't it just a matter of filling in the wall?

Seems like overkill to install new drywall.

I've done it before, but it was so much work to scrape off loose wallpaper and then apply filler 2-3 times to get an even surface. I also want to have a recessed shadow line at the bottom instead of regular baseboards, so I'm going to install the renovation plasterboard 6 mm above the parquet and glue a small black plastic angle profile there, then fill towards it with joint compound that can withstand impact from the vacuum cleaner, etc. I've done this in other rooms (albeit with 12.5 plasterboard on studs), it looks really nice and holds up as well as regular baseboards. It also allows furniture to sit flush against the walls!

 

[Jack2001]

I have screwed renovation plasterboard with long drywall screws directly into a plastered lightweight concrete wall. Worked for many years…

Yes, I have a screw gun, so it might go even faster than nailing. Thanks for the tip!

 

[jonaserik]

Yes, I have an automatic screwdriver, so it might go even faster than nailing. Thanks for the tip!

Should be fine, the only exception with renovation plaster is that it is thin and soft, if the wall is uneven, the plaster might have dents.

 

[Jack2001]

Should be fine, the only exception with renovation gypsum is that it is thin and soft, if the wall is uneven, then the gypsum might have dents in it.

Thanks for the input. There were some holes and dents at the top and bottom of the lightweight concrete elements, but I patched them quickly with B-mortar a few days ago so there wouldn’t be any cavities behind the renovation gypsum.