Flashing acts as a waterproofing layer for this type of siding and caulking will prevent the flashing from doing its job.
Caulk for cement siding.
But you are correct that it is very difficult to paint.
So what i would tell you to do is to use a colored caulk to choose the caulk in the color of the siding.
One of the best uses for silicone caulk involves filling the gaps between concrete and other materials such as brick wood or metal.
Some manufacturers do not require the metal flashing therefore we caulk the butt joint to keep the pieces together and also prevent moisture.
Placing caulk over large portions of wood siding prohibits the natural movement of the wooden panels and can cause extensive damage to the exterior of your home.
What you want to use is a silicone caulk because it s the most permanent one.
We only caulk butt joints on cedar siding if previously caulked.
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.
Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
Siding caulk.
For pricing and availability.
It does not degrade as fast as the organic urethane caulks and it remains flexible yet sturdy in its hold.
Big stretch acrylic latex caulking sealant by sashco.
Ge silicone 1 10 1 oz clear silicone caulk.
The specification to omit caulk at siding butt joints is for new installations and is discussed in detail by the manufacturer.
Ge silicone 2 10 1 oz clear silicone caulk.
Fiber cement boards are caulked only when there is no metal flashing behind them.
For pricing and availability.
Use around sinks tubs and showers.
Applying caulk to the butt joint is ineffective because the gap is not large enough to accommodate the sealant.
It s got good adhesion and expands and contracts.
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.
Best caulk for fiber cement siding or hardiplank siding lets you have the perfect sealing your surface needs.
Use when installing bath fixtures to seal gaps between shower tiles between sinks and counters and around the base of the toilet.
Trim boards wood windows.
Paintable silicone caulk can be used around the outside of window units to properly seal the window and the siding edge or around the entire door unit.