How do I attach Durock to steel?

[Lawnman323]

I have my Lennox doors now and am durocking the steel facia on my lennox zc unit. My local brick dealer told me to use high-temp silicone to attach the schluter strip to the steel, but how do I attach the durock?

Thank you in advance.

Scott

 

[Hogwildz]

There are screws made just for Durock. And HD, Lowes or hardware store should have them.

 

[webbie]

The screws will self drill right into the sheet metal - I think regular sheet rock screws do this.

 

[jtp10181]

Screws...

 

[Sandor]

The screws will self drill right into the sheet metal - I think regular sheet rock screws do this.

Regular sheet rock screws will snap when trying to pull down Durock. Best to use the screws meant for Durock, since they have a larger head to pull it down, without pulling through.

 

[JimWalshin845]

The screws will self drill right into the sheet metal - I think regular sheet rock screws do this.

Regular sheet rock screws will snap when trying to pull down Durock. Best to use the screws meant for Durock, since they have a larger head to pull it down, without pulling through.

Very correct and they have a larger shank for gripping purposes. If you don't have the spec sheet for Durock try this:

(broken link removed to http://www.usg.com/USG_Marketing_Content/usg.com/web_files/Documents/Prod_Data_and_Submittal_Sheets/CB198_Durock_Cement_Bd.pdf)

If you want to go overboard... also run a bead of silicone down the face of the metal studs.

 

[Gooserider]

The screws will self drill right into the sheet metal - I think regular sheet rock screws do this.

The Durock documentation specifically states NOT to use sheet rock screws. There are special screws intended just for use with cement boards, and those are what should be used. The Durock info sheets have more info as to the exact specs, and lengths required.

Gooserider