Fiber Cement Siding Over Concrete Block Insulation

One new wrinkle for many builders is walls built with fiber insulation between the studs plus rigid foam.

Fiber cement siding over concrete block insulation. Screw the strapping through the foam to the studs. I wouldn t hesitate to install 1 3 or 2 4 horizontal strapping 24 inches on center on top of the foam holladay recommends. Wood fiber cement or plywood siding should not be installed directly over the foam writes senior editor martin holladay. Starter strip hardieplank lap siding nailed directly to block walls trim cmu wall 6 clearance to grade refer to table on next page for fastener type and fastener spacing.

Gypsum sheathing with combined thickness of 1 inch or less method 2 james hardie siding installed to furring strips that are attached through the c i. My current question concerns insulating the exterior walls. Method 1 over furring. And other non nailable substrates e g.

Method 1 james hardie siding installed directly over continuous insulation c i and other non nailable substrates e g. Siding over rigid foam exteriors. Fiber cement siding stands up to wind rain hail fire insects and even hurricane level storms. Hardiplank is a fiber cement siding made for exterior use to cover a structure in a long lasting sheathing.

Insulated vinyl siding is made of rigid contoured insulation permanently adhered to vinyl siding while fiber cement siding is made from a mixture of sand cement and cellulose fibers. Current pneumatic nailers have maximum fastener lengths. I ve looked at a lot of the material on building science and would like to. Fiber cement siding comes in many colors and textures including some that mimic wood shingles.

A third party life cycle assessment found that insulated vinyl siding has a lower overall environmental impact than fiber cement second only to traditional vinyl siding and cedar. Cladding attachment over thick exterior rigid insulation background current building code does provide prescriptive means to attach cladding over exterior insulation table r704 3 note v. Minimum nail length must accommodate sheathing and penetrate framing a minimum 1 inches. Prefabricated fiber cement siding provides several pros and cons when applied as an exterior finish to icf.

Though generally used over wooden house sheathing you can mount your hardiplank siding over brick with only few preparatory steps. Siding fastener length cmu wall spaced 16 or 24 o c. Cement concrete block concrete forms.