Durock does not expressly exclude concrete but the material is specified only for minimum 5 8 inch exterior grade plywood or osb one source reports that usg will not officially validate the durock to concrete attachment simply because they have not tested it.
How to attach hardie siding to concrete.
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.
Surepin fasteners are driven hardened steel pins used to attach cement fiber siding i e.
James hardie direct to concrete block.
It can be cut and drilled like wood but you ll need to use a masonry bit to drill this tough board.
Home foundations may be rigid and wavy.
Attach a 2 by 2 inch wood furring strip to the walls centered on each of the chalk marks.
Fiberglass cement siding is a composite made of portland cement silica and wood fiber.
Leave a small gap at butt joints and fill.
However some homeowners would also like to attach a mailbox to the hardiplank surface.
When installing fiber cement siding always leave a gap at the ends of each length of siding.
Fasteners shall be installed between 1 in.
It s available in many styles and widths both smooth and wood textured and you still get the crisp joints and details that ll make your home s exterior stand out.
Be sure the flashing overlaps the siding course below.
Specific tools and preparation will help make a mailbox mounting project look professional as well as retaining the hardiplank s.
Once painted it looks almost identical to wood.
Install flashing at all end joints where two pieces of siding butt together.
Hardiebacker specifications specifically exclude concrete as a base for installation.
From the top edge and no closer than 3 8 in.
Hardiplank is a fiber cement siding made for exterior use to cover a structure in a long lasting sheathing.
Aerosmith hardie submittal if you are attaching james hardie siding direct to concrete block these are the documents that you will need to supply to specifiers.
From the ends of the plank.
Apply caulk to the joint before and after installing the siding.
This siding choice is made of fiber cement which is extremely durable and long lasting to weather the cold and hot seasons.
Furring strips must be installed over a cement based item that receives house siding.
James hardie prefers and recommends installation of hardieplank lap siding by the blind nailing technique such that fasteners are hidden by the course above.