how can i fix rotting floorboards? or am i just screwed?

 

go to 50resto.com and order patch panels...then cut the rust out and tack weld them in place and seam seal them all the way around and then undercoat the underside

 

i have the same problem man, i am wondering how to get about this too.
i am thinkjen bout buyen theese
http://www.latemodelrestoration.com/...1&comp=LRS
now to find a good weilder that cheap lol

 

If you are not too worried about looks, just get some sheet metal, cut out the rusted areas, and either
weld/rivet in place. Seam seal the areas and undercoat.
I have the same issues. I am going with the sheet metal route.

 

Mine wasn't bad, I grinded and cut the rust out, then welded homemade patch panels, then used eastwood rust preventor and undercoat. No probs 2 years later