There is no reason to continue to just tolerate ugly grey wood surfaces, or cover them with paint. I can help.
The cause of the grey look on your wood is due to mold that collects on the surface. The mold can be stripped off, re-stained and sealed to get the new wood look without having to replace the wood. To restore your wood, first I first remove the old finish by corn blasting or power washing, then restore it by staining and sealing it. You npw have amazing looking wood surfaces again.