Proper Flashing At The Bottom Of Hardie Siding

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

Proper flashing at the bottom of hardie siding.

Lift the bottom shingle and slip in the kickout flashing. However the typical recommended width of step flashing ranges from 5 inches to 10 inches. Pinning of the butt joints is not intended to increase wind load values. Nail it to the sidewall or glue it if nailing isn t possible.

2 run the l shaped flashing up under the bottom row of siding so that it tucks under the final. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. And shall be installed 3 8 in. 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.

James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. From end and between 3 4 in. This is a 6 wide piece of weather resistive material to make sure that no water gets through. Hardieplank siding with colorplus technology.

Dog ears will be cut on both sides approximately inch from the bottom and then folded to create a stop that will locate itself on the top of the underlying row of siding but not be so long that it will run into the nails that hold the siding of the row being flashed. Fold the roof side of the flashing down over the facing board along the roof. Cover with cap flashing. Slip in the flashing.

Pin backs pinning the plank down at the bottom edge is a common practice called pin back it is used to correct high nailing loose planks gaps or rattling. If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top.