Glue Double Gypsum (Floor)

[Kojfabriken]

Hi,

Does anyone know what kind of glue one can use? I know there are special adhesives, but they cost a fortune. Some seem to suggest that regular tile adhesive should work. I'm personally considering whether regular wallpaper paste (the fabric paste variant) could also work. Both of these are used to attach other materials directly to drywall, so they should also be able to attach plaster to plaster. Or????

Thanks in advance!!!

 

[Stefan N]

What should the final result be? I hadn't thought about wallpaper paste, tile adhesive works but it depends on the surface. What are you going to do next?

 

[Andreas_kalmar]

Mounting glue in a cartridge if it's a single or s48 it's not that expensive

 

[Kojfabriken]

What is the final result supposed to be? I hadn't considered wallpaper paste, tile adhesive works but it depends on the surface. What are you going to do next?

Assembly glue in cartridges if it's a single piece or s48, it's not that expensive

It is actually quite expensive. It ends up being about 110 SEK per square meter with a 6 mm notched trowel, although you might be able to use a significantly thinner layer. At one-third, it feels quite manageable. Can it work??? With a 6 mm notched trowel, the glue costs more than both layers of floor gypsum.

 

[Andreas_kalmar]

How large is the area?

 

[Kojfabriken]

What is the final result supposed to be? I hadn't thought of wallpaper paste, tile adhesive works but it depends on the substrate.
What will you do next?

The substrate is 28mm spaced paneling (with underfloor heating), then two layers of gypsum and tiles. It is for a kitchen.

 

[Kojfabriken]

How large is the area?

18m2

 

[Andreas_kalmar]

There are cheaper brands than ardex

 

[Kojfabriken]

There are cheaper brands than ardex

Well, if you have any tips, I'm interested, but it needs to be significantly cheaper if it’s going to compete with regular tile adhesive.

 

[Andreas_kalmar]

https://www.byggahus.se/forum/threads/s48-alternativa-limmer.29394/

Maybe this is interesting

 

[Kojfabriken]

[link]

Maybe this one is interesting

Interesting,

I had actually missed that thread. So it sounds like it's completely OK with regular tile adhesive as long as you prime before, and I’m happy to prime.

I like Fasting 65s words "Sometimes you wonder if S48 is pure Colombian heroin - it's expensive as hell."

No wonder we DIY builders always fail to stay on budget, when an adhesive can cost more than the material it bonds. :/

 

[Andreas_kalmar]

Depending on how important it is to strengthen the foundation

 

[Kojfabriken]

However, I must insist on continuing to investigate the issue of wallpaper/fabric glue. If the boards are covered with cardboard, then it should still adhere excellently. Don't worry, I don't intend to experiment myself, but it would be interesting to know why it couldn't work.

 

[KnockOnWood]

However, I must insist on continuing to investigate the question about wallpaper/fabric glue. If the boards are covered with cardboard, then it should still stick exceptionally well.

I agree (even though I haven't tried it myself).
But not simple wallpaper paste, which is just starch and dissolves easily if it gets damp.
But fabric glue/wet room glue? Maybe this one:
https://www.beijerbygg.se/store/privat/färg/kemisk-tekniska-varor/lim/våtrumslim-nordsjö

 

[Claes Sörmland]

I have glued plasterboards with vinyl acetate suspension, i.e., regular white glue/wood glue. Incidentally, this is the chemical basis for "primer" that should be applied on plasterboards before tiling or applying rolled-on waterproofing layers.