Epiphany: sealing door holes kindof renders stock vapor barrier useless doesn’t it... should probably just throw that out...
It’s hardboard (Masonite type stuff) . One side is super plastic smooth, so feels relatively water repellant, that side faces the exterior.Is that wood you used to make that cover for the hole in the inner door skin where the vapor barrier was? 😬
...I would avoid the hardie board or any wood type material and try to find some thinner plastic material for the other doors, hopefully switching screws will help a little.
Thanks! Regarding tempered hardboard I did find this:NICE job sealing the doors !!!