Been meaning to post something on PC Products 164440 PC-Petrifier. This is a water based rotted wood strengthener. I first tried this in a window sill repair a while back. At the time I thought it might be a good product to experiment with in hull sheeting. Well I did makeup some test balsa sections using this product and it worked very well in adhering the silkspan to the balsa sheet. The only problem is that after it cured, it was to hard and the test sample wouldn't pass pen testing. Anyhoo, I realized this stuff would probably be killer in waterproofing ply framing and balsa block infill that many build with. The stuff is thin enough to be sprayed with a hand sprayer, it's cheap, and no nasty fumes. View: https://www.amazon.com/Products-164440-PC-Petrifier-Water-Based-Hardener/dp/B00081FW1I/ref=pd_yo_rr_rp_t_6?_encoding=UTF8&psc=1&refRID=K81V6AECJ4RG0VNQGYQD#customerReviews
Oh that's pretty cool. I used spar varnish for my hull, but I will definitely check that stuff out when I build my next hull
