Hardy Plank Siding Flashing

James hardie recommends that a slip sheet joint flashing is installed behind each butt joint in the siding.

Hardy plank siding flashing. Pre cut for quick and easy installation. 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. 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 paint means no reflective flashback as found using regular metal flashing.

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. 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. James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. Hardieplank siding with colorplus technology.

James hardie offers an array of siding products. 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. In order to benefit from this products excellent weather resistant properties it must be installed according to the manufacturers recommendations.

Coating eliminates any reaction with fiber cement. One of those recommendations deals with properly flashing behind field butt joints.