screws for cement board

[jonnyc]

got quite a big floorwhich needs overlaying with xl cement board(trinmline) similar to hardibacker.
just found the screws delivered too long for heat pipes below.
whats the best type of screw for these boards .

screwfix is open and my best bet today.
any suggestions

 

[area tiling]

Turbo golds I find work well , spax!!

 

[Rookery]

When I fix 6mm Hardie I use 25mm MDF Tite screws from Screwfix.

 

[AliGage]

Turbo golds everytime.

 

[Qwerty]

Turbo golds here too!

 

[Mr Tiler]

Drywall screws here come in all sizes

 

[cam_low]

turbo gold zinc screws non rust, plasterboard screws rust tea bag.

 

[charlie1]

Turbo gold 4 x 25 mm

 

[Spud]

Drywall screws here come in all sizes

Ash never use dry wall screws for screwing down hardie or plywood they arent strong enough and the threads on the screws are narrower than wood screws so dont grip into the substrate the same way a wood screw will do

 

[AliGage]

There is a clue in the name!

 

[White Room]

Drywall screws here come in all sizes

The smaller thread are for dry lining metal systems and the course thread for timber but would use neither for fixing to the floor...

 

[Stef]

Turbo golds!!!!

 

[widler]

If drywall screws can hold a 12.5/15/mm 8x4 plasterboard upside down on a ceiling into wood for decades it will hold a floor down.

 

[widler]

Oh and you screw a floor down with twice ss many screws as well.
Wheres the logic lads in not using dry wall screws ?

 

[White Room]

Oh and you screw a floor down with twice ss many screws as well.
Wheres the logic lads in not using dry wall screws ?

Why use dry wall screws when theres other screws that are more appropriate for the job....