Installing Hontonit wall panels, how...?

[Bjarnhof]

I am going to install about 20 sqm of Huntonit wall panel in the hallway from floor to ceiling. According to the instructions, you should nail it into the groove, but the seller where I bought them said I should screw it...
How have you done it? Screwed or nailed? What nails or screws have you used?

 

[jtl]

I only installed Huntonit ceiling panels but screwed the tongues with drywall screws into the battens.

According to the instructions, it should be joined at the battens, but I ignored that. Screwed where the tongue meets the battens and it's rock solid.

 

[Bjarnhof]

Okay. I have lots of trallskruv lying around, that should work as well then...?

 

[jtl]

Decking screw has a smaller head and is usually longer than drywall screw, I wouldn't fasten mine with decking screw.

 

[Bjarnhof]

I thought the opposite, that the small head wouldn't damage the tongue of the board as much as a drywall screw.
But it's not worse than going to buy a box of drywall screws otherwise.