Jeep floor pan help
The floor pans on my TJ have some holes that need patched but when I look through them, I can see a second layer of rusty metal about 2 inches below the floor pans on both driver side and passenger side. What is this second layer underneath? Is there a way that I can repair both the floor pan and whatever layer is under it? It doesn't make much sense to bedline the floor pans if water can just get it from the bottom. Any help is appreciated!