Drywall Screws Snapping, advice please

[Dougie212]

Hi there

I'm currently installing 12.5mm Plasterboards to our living room and dining room ceiling. I'm screwing the boards in with 3.5x40mm drywall screws. Now, granted they have been in the shed a while, but I'm finding that when I'm putting the screws in they are snapping, before they are tight to the board. Is 40mm too long and they are snapping as they are gripping into the wood, or could they have just gone brittle with age..?

Many Thanks

Dougie

 

[roy c]

Get a new box of screws and the proper screw bit to screw them in with 38mm are big enough.

 

[Dougie212]

Thankyou.. screwfix here I come...

 

[PrenticeBoyofDerry]

I would be happy using 32mm on 12.5mm PBs.
The chances are that a combination of things are coursing the screw to break.
Overall length in to wood.
Age and condition.
Driver torque.