152 4 mm wide 1 in.
Caulking james hardie siding.
Joint flashing is recommended for all hardie lap siding now.
Osi quad product brochure.
James hardie also does not recommend applying caulk to the horizontal overlap between siding planks see figure 2.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
Re applying caulking when it has begun to show signs of wear can help keep moisture from getting into the wall cavity.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
James hardie recommends the use of caulks and sealants that remain permanently.
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.
We ve been providing a better way to build for over 100 years.
James hardie is the world leader in fiber cement siding and backerboard.
Lastly james hardie does not allow the use of colour matched caulking for touch ups.
Hardie no longer recommends the caulking of any joint in their lap siding colorplus or primed.
James hardie color match caulk osi quad caulk for exterior door window and siding applications color matched to james hardie colors uv water resistant will not crack or yellow 1 tube covers 29 lineal feet at 1 4 bead width or 13 lineal feet at a 3 8 bead width paintable.
Deterioration of the caulking in the joint has become a maintenance issue for home owners over time.
1 i chose this caulk because it has 25 flexibility compared to silicone based caulk.
25 4 mm on overlap no caulk figure 1.
Fiber cement siding repair or patching.
It will look okay on day one but caulk is not designed to be used as a touch up and it will weather at a different pace than the siding.
Apparently no one here read the technical bulletin 9 that james hardie released in 2008.
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.
For additional information on finishing james hardie products download technical bulletin 22 from here.