Attaching Hardi Siding To Steel Purlins

How to stagger lap siding for walls longer than 12 feet you ll need to butt additional lengths of siding together.

Attaching hardi siding to steel purlins.

Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. You can make your own fiber cement starter strip by ripping a piece of hardieplank lap siding into 1 1 4 inch strips. We do recommend it however. James hardie recommends installing a rainscreen an air gap between the hardiepanel siding and the water resistive barrier as a best practice.

Bolt the piece of wood to the steel frame by pre cutting holes into the frame so the bolts can fit through. From the top edge and no closer than 3 8 in. The manufacturer does not list an appropriate wood stud screw. The only downside of pneumatic tools is that sometimes the installer will get going a little bit too quickly and will lose track of where the nails are going.

Three screw threads must penetrate the steel stud. If your going to use hardi board take off the metal siding and install osb or plywood first. Use a number 8 1 1 4 inch long by 0 375 inch wide hd ribbed wafer head or equivalent screw on steel studs. James hardie prefers and recommends installation of hardieplank lap siding by the blind nailing technique such that fasteners are hidden by the course above.

Ring shank pole barn nails heavy wood screws lag screws or bolts are often used for attaching these purlins. The term applies to a nailing screwing method for joining hardieplank planks to hide nail or screw fasteners. Fasteners shall be installed between 1 in. Bolts should be completely threaded.

Hardi board is some brittle stuff and will break if you look at it wrong if not applied over a solid backing material. Use bolts made specifically for screwing into steel or metal if attaching wood flush onto a steel frame. Do all roofing projects require purlins. And bottom purlins on an arched rafter building to prevent the curved panels from pulling the purlins loose from the rafters.

Siding siding should be installed using the standard fastening and overlap patterns to ensure optimum. The purpose of the purlins is to provide a solid foundation for the metal roofing panels and trim to be screwed to. It s best to stagger the joints in each successive course to avoid noticeable patterns. I wouldn t apply it over metal siding with or without furring strips.

Hardie board siding is a cement board siding that can be installed over braced wood or steel studs on the exterior of a building to provide a strong durable covering that creates the look of wood siding without the expense or maintenance requirements. Hardie plank siding is almost always installed with air nailers which are the best tool for quick installation.