Double floor gypsum

[Jimman811]

When I screw the first layer of floor gypsum onto the already laid subfloor, the gypsum "bulges" around the screw. Sometimes it's just the paper that sticks up.

Will this be a problem when the next layer of gypsum is laid?

 

[Tjrex]

It is better to glue floor gypsum. There are several types of board glue made specifically for this purpose. Ardex and Casco, for example.

 

[Jimman811]

I guard with both glue (ardex) and screws.

 

[Tjrex]

Try using drywall screws to see if the bumps become smaller.

 

[Jimman811]

Thanks for the tip, but I have tested both types of screws. The hårdgips becomes a little less, unsure if it matters, never worked with golvgips before.