Caulking Hardiplank Siding

You can use caulk on a number of areas of your hardie siding.

Caulking hardiplank siding.

When putting on caulk most people decide where they want to put it. Similar to paint previous coats of. 801 caulk 10 1 oz by dap best exterior caulk for hardiplank siding. James hardie is the world leader in fiber cement siding and backerboard.

James hardie recommends the use of caulks and sealants that remain permanently flexible. But in our experience we saw that both of the corners and sometimes the crevices also some butt joints door trim boards and windows are quite common areas. Wherever hardie siding meets a trim board the company recommends you leave a 1 8 gap between the siding and the trim and apply a 3 8 bead of approved caulking to protect and seal the edge of the siding. James hardie does not recommend using caulk or h jointers for the butt joints of hardieplank siding with colorplus technology.

Joint flashing butt joint horizontal lap treatment june 2014 james hardie does not. James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2. Deterioration of the caulking in the joint has become a maintenance issue for home owners over time. Joint flashing is recommended for all hardie lap siding now.

The nails holding up the siding should not be caulked. We ve been providing a better way to build for over 100 years. Because almost all of the james hardie product installed in edmonton is prefinished colorplus siding the caulking will. Is the old caulking removed before new coats are applied.

Hardie no longer recommends the caulking of any joint in their lap siding colorplus or primed. A diyer or a novice painter might attempt to achieve a cleaner look by caulking the siding nails but the nail is guaranteed to push the caulking material out within a few months. Osi quad product brochure. Where should you use caulk on hardie siding.

When james hardie siding products butt into wood based materials a 1 8 gap will allow for expansion and contraction of the wood based product.