Fiber Cement Siding Require Sheathing

Otherwise it might shrink at butt joints.

Fiber cement siding require sheathing.

Fiber cement is attached using corrosion resistant galvanized or stainless steel nails or screws that penetrate studs or exterior sheathing. Cement board structural sheathing is portland cement reinforced with glass fiber mesh that creates a sheet that attaches easily to a wall. Hardie siding problems a k a. Many fiber cement siding planks can be blind nailed onto.

Problems with hardie siding. When sheathing is the preferred surface that will receive the fiber cement siding or any other fragile substrate be sure to pre drill the holes at corners to prevent accidental damages. Jaime prefers to use the vinyl mounting blocks typically used with vinyl siding. Single wall construction with fiber cement siding is perfectly fine for non wind non coastal areas of the country as displayed in the photo below.

Fiber cement siding should be installed over plywood osb or sheathing. Single wall construction is when the siding is applied directly to the studs without any sheathing like osb or plywood first. Cement boards are non combustible and provide a good base for tile or other masonry products. Most fiber cement manufacturers make mounting blocks for lights electrical receptacles a c lines pvc venting etc.

Fiber cement problems are rare but do happen from time to time.