It s got good adhesion and expands and contracts.
Caulking cement board siding.
Many professionals like those at james hardie also agree that you should not use caulk on fiber cement siding unless there is no metal flashing underneath.
For pricing and availability.
Do not caulk fiber cement butt joints edges.
Big stretch acrylic latex caulking sealant by sashco.
Siding caulk.
Sealing caulking fiber cement siding.
What you want to use is a silicone caulk because it s the most permanent one.
Is there anything out there you could help me with to repairs cement board siding.
Caulking them is a mistake and the caulking is likely to fail prematurely.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
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Bottom of siding boards should not be caulked water is meant to exit through the bottom of each board.
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.
Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job.
Cut ends of fiber cement siding should have been sealed using 100 acrylic latex primer or paint certainteed or in some cases using an approved caulk wiped on the cut surface see our notes on hardieplank installation.
How were butt joints and end joints treated flashed caulked.
Applying caulk to the butt joint is ineffective because the gap is not large enough to accommodate the sealant.
That is why we are showing you some other products for various surfaces along with our top pick.
Ge silicone 2 10 1 oz clear silicone caulk.
For pricing and availability.
Ge silicone 1 10 1 oz clear silicone caulk.
But you are correct that it is very difficult to paint.
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Best caulk for fiber cement siding or hardiplank siding lets you have the perfect sealing your surface needs.