How to install fiber-cement siding over mineral wool?
I am planning to install 2″ thick Rockboard 80 over Zip Sheathing using vertical furring strips screwed to the 24″ OC studs. I am planning to install fiber cement siding on the outside of this assembly. I have two questions:
Are 1×4 furring strips thick enough to provide adequate material for the fiber cement fasteners to attach to?
What type of fasteners should I use? It seems like smooth-shank roofing nails wouldn’t hold well enough. I’ve used screws before and had to pre-drill for each screw to penetrate the fiber cement. Is there a type of screw that will self-tap through fiber cement?
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