I recently purchased a house, and have been doing repairs. I got under the house in the crawl space with my home inspector and fungus was located between some of the floor joists and the main duct work. The house is an older home. The damage does not appear to be extensive. It only looks like there is a small amount of surface rot. I would like to do as much of the repair myself if possible. I need help with a couple of things. How can I remove the fungus from the joists and duct insulation? How can I repair any damage if there is any to the joists? How and with what should I insulate the ducts in the crawlspace? Thank you in advance for your help.