In order to benefit from this products excellent weather resistant properties it must be installed according to the manufacturers recommendations.
Hardy plank siding flashing.
James hardie offers an array of siding products.
Hardiplank lap siding is a fiber cement siding product that looks like wood clapboards but outperforms it when it comes to weather resistance and finish performance.
Use to reduce moisture penetration behind the joint where two planks butt together and drain water over the top edge of the last full course of siding.
Hardiepanel vertical siding can be installed over braced wood or steel studs 20 gauge 33 mils minimum to 16 gauge 54 mils maximum spaced a maximum of 24 in o c.
This is a 6 wide piece of weather resistive material to make sure that no water gets through.
Hardieplank siding with colorplus technology.
How to flash siding butt joints after the siding is installed a common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint.
As a homeowner you will work with a contractor who will facilitate the installation of your james hardie siding trim soffit wrap and flashing products including products with colorplus technology.
Joint flashing butt joint horizontal lap treatment june 2014 james hardie does not recommend caulking butt joints or the horizontal overlaps joint flashing 6 in.
Coating eliminates any reaction with fiber cement.
James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2.
Flashing hardiplank building out with 2 layers of 30lb felt at the stud locations is a time tested wood siding detail hard to find 2 rolls of felt tho and tyvek will work as a spline but it has a limited uv exposure life if the joint shrinks which they sometimes do it could affect the tyvek.
James hardie recommends that a slip sheet joint flashing is installed behind each butt joint in the siding.
Coating paint means no reflective flashback as found using regular metal flashing.