Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
Caulking james hardie siding.
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.
We ve been providing a better way to build for over 100 years.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
Lastly james hardie does not allow the use of colour matched caulking for touch ups.
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.
25 4 mm on overlap no caulk figure 1.
Apparently no one here read the technical bulletin 9 that james hardie released in 2008.
James hardie recommends the use of caulks and sealants that remain permanently.
James hardie is the world leader in fiber cement siding and backerboard.
Do not use stains or oil based alkyd paints on james hardie products.
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.
152 4 mm wide 1 in.
Re applying caulking when it has begun to show signs of wear can help keep moisture from getting into the wall cavity.
Joint flashing is recommended for all hardie lap siding now.
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.
Hardie no longer recommends the caulking of any joint in their lap siding colorplus or primed.
Fiber cement siding repair or patching.
Osi quad product brochure.
2 house built before 2008 so has no flashing okay to caulk.
Deterioration of the caulking in the joint has become a maintenance issue for home owners over time.