Screw raw tongue-and-groove hidden in tongue

[AndersS]

Considering screwing a storage floor made of tongue and groove boards with hidden screws at the tongue.
Is it decking and panel screws that are used?
Is there any difference in how they pull, different models/brands, and does it make it more difficult to fit the tongue on the next board?

 

[Fluxor]

Floor screw?

 

[amoreex]

Spontaneously, I'm thinking Heco screws for hidden mounting.
Or panel clips?

 

[AndersS]

Now I have to be embarrassed. I checked an older storage that I thought was nailed with brads. There were screws on the outer edge that had heads with a "square slot."
It will have to be such a floor screw, should be enough with 42 mm for 20 mm råspont, Essve 3.9*42.

 

[Huddingebo]

The standard for screws is usually a length that is 2.5-3 times the thickness of what you are fastening.
I have 32mm floorboards and 75mm screws.

 

[AndersS]

Standard for screws is usually a length that is 2.5-3 times the thickness of the material being fastened.
I have 32mm floorboards and 75mm screws

Nails times 3 and screws double or the next size up is what I've learned from fine carpenters in the family. But it might have increased over time.
So if you have 32 mm it becomes 64 mm or the size above, i.e. 75 mm.

 

[kniv]

So if there is regular 22mm flooring chipboard, why would you use a screw that extends 21mm..?!
Rules of thumb are great, but I believe a bit of knowledge and common sense goes a longer way.

 

[AndersS]

So, if there is regular 22mm floor chipboard, why would you use a screw that extends by 21mm..?! Rules of thumb are all well and good, but I believe a little knowledge and sense will go further.

Of course, you adapt based on what is being done, you don't nail roofing felt with times three either

 

[AndersS]

Became Heco panel screw. Was easy to screw and pulls down the råspont.

https://www.clasohlson.com/se/Panel...R2FXB17L3_GiWjfkfhAItP6tQkHV466xoCcRQQAvD_BwE