Hardiplank Siding Gaps

Caulking around windows doors eaves and trim edges gives added insurance that leaks will not occur.
Hardiplank siding gaps. The three sources of siding butt joint gaps. On older installations of hardieplank lap siding the field butt joints would have an appropriate gap which at one time was specifically designated as 1 8t. Improper installation improper product storage thermal movement improper siding installation. The company warns of a cosmetic issue that there may be a surface sheen difference at the caulked butt joints compared to the painted siding surfaces.
Hardie plank joints butt joints 4. Don t count on much help from james hardie s customer warranty department on siding shrinkage or butt joint gap concerns. If siding butt joint gaps are due to shrinkage. Touch up mistakes are by far the most common error that edmonton s james hardie installers make.
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. James hardie believes it is good building practice to seal the joints to prevent moisture such as wind driven rain and snow from penetrating the wall cavity. 10 most common install errors with james hardie siding. Do caulk where hardieplank siding meets vertical trim.
If the fiber cement product butt joint gaps are due to installation error the installer.