Caulking Between Hardiplank Siding

James hardie does not recommend using caulk or h jointers for the butt joints of hardieplank siding with colorplus technology.

Caulking between hardiplank siding.

Joint flashing butt joint horizontal lap treatment june 2014 james hardie does not recommend caulking. This video is about how to like a pro. You need to have the best caulk for hardie siding to help your walls and wooden surfaces to get rid of open cracks and thin spaces between joints. But here the main problem is people usually don t find the right type of caulk for their works.

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. Always caulk between the siding and the trim. Wherever hardie siding meets a trim board the company recommends you leave a 1 8 gap between the siding and the trim and apply a 3 8 bead of approved caulking to protect and seal the edge of the siding.

Do not caulk between siding and any built in receiving channels located at or around windows. Some of the most commonly caulked areas of siding include both corners and crevices as well as some butt joints and window and door trim boards. Step 1 dampen a dry rag with denatured alcohol and wipe the area surrounding the crack. Vertical trim gap caulking.

Although it is convenient hardiplank siding is still susceptible to cracks which requires a caulking treatment to repair. If you use sashco s acrylic latex caulking sealant you can have any interior or exterior as good as new. Leave a 1 8 gap between the siding and the trim or other materials to allow for structural movement. When to use caulk on exterior siding siding caulk can be used on several different areas of your exterior siding to help prevent water damage and moisture buildup.

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. Siding nails should not be caulked another item that needs room to play is siding boards themselves. The nails holding up the siding should not be caulked.