Answers

call Ryan at 877-788-5647.

Walnut shells are a little harder, more course.

The spray foam is not good. It draws moisture. Call Ryan at 877-788-5647 for more help.

Sprayer. It will get back into all of the tight spots. You still need to back brush.

about a year.

Unfortunately there is not much you can do. Just have to move pictures and over time the spots will blend back in.

NO !!!

Clean the wood surface and apply Life Line Gentry Gray to retain the old look.

You can sand blast, do not power wash. You just have to be very careful because the sand will cut wires, etch glass, remove paint from drip edges and the sand itself is very dangerous to breathe the dust-like asbestos.

Not going to happen. Call 877-788-5647 to investigate into have the logs replaced.