Siding Joint Flashing

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.

Siding joint flashing.

What is the moulding option for butt joints. Hardiplank lap siding field butt joint treatment. Where a butt joint is necessary use a scarf joint sloped down toward the building s exterior. Hardiplank lap siding is a fantastic siding material that we ve been using for years on both residential and light commercial building projects.

Jointflash is a safe and economical solution for flashing both fiber cement and wood lap siding. 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. Product information product dimensions. Coating eliminates any reaction with fiber cement.

If joint moulding option is selected add the thickness of the web to the gap allowing a net 3 16 in. The product is a proprietary plastic 20 year uv rated sheet 4 ml thick that is basically a six by twelve post it note. The user friendly polyethylene flashing system is perfect for both residential and commercial siding applications. Avoid horizontal butt joints in vertical siding.

Pre cut for quick and easy installation. With plywood sidings use a z flashing at horizontal joints to shed water to the outside see figure 1 13 at above left. Bearskin joint flashing is a plastic sheet for use as a joint flashing behind every butt joint in the siding. The easy to use joint flashing sheet that will change the way siding is installed.

This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted. If you are using primed siding you must seal all exposed cuts of siding including those at butt joints. 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. Siding planks see figure 2.

Quick and easy. 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. Do i need to seal edges at a butt joint. Vertical and plywood siding butt joint details.

Each sheet is pre cut with a stick it adhesive for the fastest application available. Bear skin is a durable non corrosive flashing material used to prevent water and wind driven rain from infiltrating the butt joints of lap siding.