After you finish welding the floor pans in, I know you apply seem sealer inside the car, do you apply it around the bottom side also then put under coating over it?

 

yes... apply seam sealer whereever you can when you put in new panels! that way no moisture can get to them. then put some good quality undercoating on them.

 

I just welded my floarboard in on my passenger side painted it with por 15 then put some seam sealer in the crack to make sure water and moister dont get in.

 

Now i only sprayed some of thisonto both sides of the pans is that ok? I only applyed seam sealer to the top half (ran out before I could do the underside) But I picked up some more and planned to do it this weekend but im limited on time this weekend to do it.