What could one spray inside solid core door to protect wood and create a tunnel? Bought a pet door for a solid core door. Installed it, looks great, ezcept turns out the company doesn't make a tunnel for the door.
Is there any thing or combination of things I could spray that would cure to a plastic feel with a white-ish color?
If not, the door was cheap. I could always exchange it.
Is plasti-dip an option?