Glue wood to "plaster"

[nova383]

Hello.
I want to glue a 25x48 batten directly onto plastered leca indoors/dry space. Does any glue work that holds well? I guess it should handle holding 2-3 kg load straight down. 3-4 kg shear.
The battens will be positioned right at the very edge of the leca (max 1 cm in from the edge) so drilling and plugging is a bit risky.

 

[BSOD]

Difficult to assess how well the plaster sticks to the leca. I think good construction glue holds, but the plaster might detach from the wall. And then it doesn't matter how good the glue is.

I have a bit of trouble understanding why you shouldn't be able to plug and screw. You should be able to drill at an angle if it's near the edge?

 

[nova383]

It's difficult to assess how well the rendering holds on the lecablocks. I think good construction adhesive will hold, but the rendering might come off the wall. And then it doesn't matter how good the adhesive is.

I find it a bit hard to understand why you shouldn't be able to plug and screw. You should be able to drill at an angle if it's close to the edge?

Just there it's only coated with a thin layer of render B, so it won't come off there. Another reason for using adhesive is that it makes it easier to make it completely straight and level—screws will pull the battens towards the lecablocks, which aren't 100% exactly the same size throughout. An adhesive would fill this out and make the battens straight.

 

[BSOD]

How long is the läkten? And is it the part that is 48mm that should be glued?

 

[nova383]

How long is the wooden strip? And is it the part that is 48mm that should be glued?

2m - 1m - 2m (10x21) door opening where I was thinking of just having "framing" without a door. It probably has a good name, but I can't think of it now.
Yes, it is the 48 part that should be glued to the lecan.

 

[BSOD]

Yes, exactly.
It's a doorway 10x21 where I just thought to have a "frame" without a door. Surely it's called something, but I can't think of it now.

Ok. Sounds like some kind of trim? But I'm having a bit of difficulty understanding how you're going to load the piece.

As I said, I'm doubtful about just gluing, but if I were to try, I would use PL400 glue. It doesn't sound like it would have much consequence if the glue fails? So I guess it's just a matter of testing.

I once tried low-cost construction adhesive from Byggmax. It was like an old chewing gum six months later.

 

[nova383]

PL400 sounds like an idea indeed!
Foder is what it's called, yes
No, there are no loads to speak of.