Hardie Plank Siding Joints

James hardie is the world leader in fiber cement siding and backerboard.

Hardie plank siding joints.

The sheet should be removed immediately after each plank 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. These colors are accompanied by a 15 year warranty on the finish. James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2.

We ve been providing a better way to build for over 100 years. 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. James hardie 8 25 in x 144 in hz10 hardieplank beaded cedarmill fiber cement lap siding. Use moderate contact on butt joints when joining two pieces of plank.

For colorplus products use the color matched edge coater to seal the cut end. Hardie plank siding has a nail line across the top of the board that is 1 down from the top and nails are supposed to fall between and 1 from the top of the board to give the best hold. Color options are virtually unlimited. This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted.

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.