How To Flash Fiber Cement 4x8 Siding Panels

I am going to install james hardie 4 x 8 fiber cement panels on the exterior parapet walls of my garage.

How to flash fiber cement 4x8 siding panels.

Nails should penetrate through the sheathing and at least 1 into studs. Use hot dipped galvanized or stainless steel nails. Leave a small gap at butt joints and fill. I m using z flashing along bottom edge but i haven t found any flashing for the 4 vertical butt joints.

Fiber cement siding tolerances and gaps. It can also be attached using corrosion resistant screws. Apply caulk to the joint before and after installing the siding. Many finishes are available to emulate rough cedar wood planks or other textures.

Jaime prefers to use the vinyl mounting blocks typically used with vinyl siding. Fiber cement siding can be nailed by hand or with a pneumatic nailer. Place all nails 3 8 inch from the hardiepanel edge and at least 2 inches from any corner. The allura fiber cement siding should be cut and installed around the trim block leaving a 1 8 gap at the bottom and sides and a 1 4 gap at the top.

Do you have any suggestions for flashing a four foot vertical seam. Install flashing at all end joints where two pieces of siding butt together. Thanks for the great advice. When installing fiber cement siding be sure to leave at least clear space between the siding and the flashing vertical siding should be installed and attached to the structural framing when a non structural sheathing gypsum board or foam type sheathing are used.

They re cheaper and easy to install and you can cut the proper size hole in a plastic mounting block with a utility knife or a snips. Most panel siding is exterior grade plywood either 1 2 or 5 8 inch thick or some hardboard such as cement fiber. Lighting and electrical outlets install a piece of z flashing over the top of the trim block. When installing fiber cement siding always leave a gap at the ends of each length of siding.

Fasten the panels to the sub structure with a pneumatic nailer and corrosion resistant nails. Drive the nails to be just flush with the surface of the panel but not so deep that the nails dimple the panel surface.