When you try to restrict either it is at your peril.
Caulking cedar lap siding.
If i install a non finished product i usually go with a 3m paintable caulk.
How to caulk the window trim on lap siding.
Whether you are repainting replacing a window or replacing the siding on your house the caulking around the window trim is a very important element.
Generally we do not recommend caulking butt joints on cedar siding.
If i am installing a prefinished product which i do mostly i use a color osi match caulk.
Corner boards are applied to the sheathing with siding fitting tightly against the narrow edge of the boards allowing for expansion and an adequate caulking bead.
Width is a matter of taste and proper proportion.
Caulk by its adhesive nature will try to limit this movement leading to widespread failure and cracking in the caulk over time.
It needs to move and breathe.
Think of a wood home as a living thing.
The answer depends on the manufacturer and installation method used when the siding was first installed.
It is generally not a good idea to use caulking on wood siding.
If overused or incorrectly placed siding caulk can cause more damage to your exterior than good.
When deciding how to use caulk on your siding however it is generally more important to consider where you should not use it.
The corner boards and the ends of the siding are nailed to the corner studs which anchors the wood for a maintenance free joint.