ᐅ Attach XPS insulation boards to the garden fence wall using perimeter foam adhesive.

Hello everyone,
I am currently working on my enclosure.
I poured concrete into the wall using formwork blocks.
Now I would like to attach 5cm XPS panels and then coat them with filler.
My question is, can I bond these XPS panels with perimeter foam, or is that not recommended?

chri1985 schrieb:

Hello everyone,
I am currently working on my boundary wall.
I poured concrete into the wall made of formwork blocks.
Now I would like to glue 5cm XPS boards and then apply filler.
My question is, can I bond these XPS boards with perimeter foam, or is that not advisable?

That definitely works.

But let me ask, why do you want to do this and what do you expect from it? How are you planning to protect against moisture?

OK, clear. I would just glue the panels to achieve a smooth, even surface.
Before that, I would coat the formwork blocks with a liquid membrane.
Or what do you think would be the best approach?

chri1985 schrieb:

Or what do you think would be best?

Without XPS. That’s double and unnecessary work. Sealing and plastering is enough. If you want a smoother finish, first apply reinforcing mesh and then the surface texture you want.

So, just with adhesive plaster and reinforcing mesh, or how? And moisture sealing beforehand?

No, apply a primer to the wall first, then apply lime-cement plaster with reinforcing mesh on top.

This will result in a smooth finish and, most importantly, it will hold well. The mesh is used to prevent the plaster from cracking.

The plaster will be about 1.5 to 2 cm (0.6 to 0.8 inches) thick.