Which screws for hardiebacker?

[ben100]

Which screws should I use for a 12mm hardiebacker board onto a brick wall?

 

[motorbiking]

I used plasterboard foam adhesive and then just a a few to hold it in place while it sets.

 

[ben100]

I used plasterboard foam adhesive and then just a a few to hold it in place while it sets.

I have used an adhesive to stick it to the wall & would like to add screws to it to give it extra support as I don’t want to rely on just the adhesive. Which screws do I use?

 

[Mr Chibs]

How about 60mm x 5, zinc, could probably get away with shorter 40/50mm, depending on how close to wall the board is and how many you use.

Or just use concrete screws.

 

[RandomGrinch]

I seem to remember that due to the cement boards alkalinity, stainless screws are recommended. I used No.8 x1.5", but that was into battening.

 

[opps]

I cannot give you a definitive answer but when working with cement boards, I have used plasterboard screws. I figured that the coating on the head doesn't rust when you plaster over them.

 

[ben100]

How about 60mm x 5, zinc, could probably get away with shorter 40/50mm, depending on how close to wall the board is and how many you use.

Or just use concrete screws.

I’m looking at around 70-80mm screws due to spacing between board & wall. Apparently screw has to go in at least 5mm into the brick? Any particular brand of screw you’d recommend & should they be 5 or 6?

 

[Mr Chibs]

You can get plasterboard screws in 70/80mm. 5 will be fine.

 

[opps]

I’m looking at around 70-80mm screws due to spacing between board & wall. Apparently screw has to go in at least 5mm into the brick? Any particular brand of screw you’d recommend & should they be 5 or 6?

5mm in to the brick work doesn't sound like a lot if you want a decent load bearing fix.

Which kind of nylon plugs do you plan to use?

 

[Mr Chibs]

You're right... I was meaning size 5 screw, not 5mm in the brick.

 

[^woody^]

SS countersunk, and with a wide head, so 5mm screws. Minimum 60mm into the wall.

 

[ben100]

5mm in to the brick work doesn't sound like a lot if you want a decent load bearing fix.

Which kind of nylon plugs do you plan to use?

Sorry meant 50mm.

 

[ben100]

SS countersunk, and with a wide head, so 5mm screws. Minimum 60mm into the wall.

I've seen turbo gold recommend, would they do?

 

[^woody^]

I've seen turbo gold recommend, would they do?

They are not SS. Turbo Ultra are and will do.