I pulled the front lower panels off of my 69 to fix the subfloor. I dont have the room for a shell off so i am making due. I notice a leak from aluminum channel. I am assuming this is coming from where the lower curved piece meets the vertical wall and is covers by exterior trim. I pealed a piece of trim back and it looks like it is shingles incorrectly to stop water flow. The lower piece laps over the upper piece. What is the beat way to stop this leak and what material do i use? Inside or outside fix?
You need to remove that band before putting the floor back in. You will need access to all sides. Some of the old timers on here can tell you specifics but you will need to make sure that bolts go through the c-channel, floor, and frame. I would seal the edge of that new plywood with urethane or something at least on the top side and around the edges and a band around the perimeter of the back side. When you get it together I would also caulk under that trim and edges of the floor. Put the trim back on and then caulk the top edge only.
Top edge of the exterior trim? What would you use so it isn't visible? And by band you mean the c channel? So is the trim and the channel riveted together? I am assuming i can cut the channel if it runs behind panels that i am not ready to take off yet. Let me know if i am wrong. I am only trying to replace the floor under the sofa for now. I know that last sentence is a lie but i really dont want to gut the whole thing just yet. only the subfloor to the door then.
The band is the exterior trim. C-channel is the thing that is attached to the skin. It faces up maybe it should be called a u channel. The floor goes under the the c-channel. You have to bolt everything together like a sandwich. Exterior trim sealed with Trempro-635 or Parbond. Both are aluminum colored.
Ideally you want the top skin over the bottom skin but sometimes it does not work out that way. Caulk that seam then put the trim back on and caulk over that. You need to get things clean for the caulk to stick.