Proper Flashing At The Bottom Of Hardie Siding

Pinning of the butt joints is not intended to increase wind load values.

Proper flashing at the bottom of hardie siding.

Mount it on top of any waterproofing layers that have been installed to protect the wall of the home. From end and between 3 4 in. And shall be installed 3 8 in. 2 run the l shaped flashing up under the bottom row of siding so that it tucks under the final.

Slice along the bend line about 4 inches into the first piece of flashing at the bottom of the roof with tin snips. 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. This is a 6 wide piece of weather resistive material to make sure that no water gets through. James hardie recommends that a slip sheet joint flashing is installed behind each butt joint in the siding.

James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. Likewise a 10 wide flashing will result in a 5 inch wide roof deck flange and a 5 inch vertical flange. Nail it to the sidewall or glue it if nailing isn t possible. Cover with cap flashing.

Fold the roof side of the flashing down over the facing board along the roof. However the typical recommended width of step flashing ranges from 5 inches to 10 inches. 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. A 5 inch wide flashing will result in a 2 1 2 roof deck flange and 2 1 2 vertical wall flange.

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. Slip in the flashing.