Hardie Plank Siding Joints

Use moderate contact on butt joints when joining two pieces of plank.

Hardie plank siding joints.

Hardieplank lap siding with colorplus technology is shipped with a protective laminate slip sheet which should be left in place during cutting and fastening to reduce marring and scratching. We ve been providing a better way to build for over 100 years. These colors are accompanied by a 15 year warranty on the finish. Color options are virtually unlimited.

Place cut ends where the siding meets a corner door window trim or other break in the wall where the joint is to be caulked. Hardie board siding can be made to mimic just about any other siding material including wood lap boards cedar shingles and wood shake siding. The sheet should be removed immediately after each plank is installed. James hardie is the world leader in fiber cement siding and backerboard.

If cut ends are used in a butt joint between planks james hardie requires sealing cut ends for all products. James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. 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. This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted.

James hardie does not recommend using caulk or h jointers for the butt joints of hardieplank siding with colorplus technology.