Aluminum on roof questions

[austinb]

I found 4' x 10' aluminum. My teardrop is 49 1/2" wide, and my edge trim is 1" so their would only be 3/8" to 1/4" overlap. How should I handle this? Should I cut 3/4" aluminum strips to go on edges or larger to overlap or underlap? Also their are holes in the trim that would not line up with my roof spars only the 1/8" luan. Should I not use the holes in fear they would only be a place for a screw leak? Should I glue the aluminum on with these circumstances and what glue should I use?
Thanks

[kennyrayandersen]

I found 4' x 10' aluminum. My teardrop is 49 1/2" wide, and my edge trim is 1" so their would only be 3/8" to 1/4" overlap. How should I handle this? Should I cut 3/4" aluminum strips to go on edges or larger to overlap or underlap? Also their are holes in the trim that would not line up with my roof spars only the 1/8" luan. Should I not use the holes in fear they would only be a place for a screw leak? Should I glue the aluminum on with these circumstances and what glue should I use?
Thanks

Have you checked at a trailer repair place -- they have wider and longer aluminum available. I would be looking for the full overlap (or something close to it). I'd probably have built it to be 48 inches wide though unless I knew I could source wider material...

I think the method is to tack the edge of the aluminum sheet and cover that with the sealant and angle trim (at least I think that how M
J does his)

[len19070]

You will have a problem with this using 48" material.

What Frame are you using?

I'm assuming you are using 3/4" sides fastened to the outside of a 48" frame and that's why it's 49 1/2.

Think about this now? As I'm sure you have. You want to cover a 49 1/2 area with a 48" piece of material.

Outside corner Molding (the RV kind, or any other type) is only made to cover and seal a small outside opening...just a sliver.

Not to make up 1 1/2".


This area and this seal is one of the most crucial seals on the trailer.

When I build a 4' wide trailer I make it 47 1/2" wide overall (by narrowing the frame, the frame being 46" wide)

The 48"sheet overhangs 1/4" on each side and I "Tap it over" to shed the water.

Then the outside corner at that point is only cosmetic.

If you are using a HF frame or fabricating your own this can be done.

OR.

If your not concerned with aesthetics build the TD box and mount it on top of the frame.

Please, We don't want to see 6 months down the road a post like "What do I do about leaking edges?"

And neither do you.

Happy Trails

Len

[kennyrayandersen]

When I build a 4' wide trailer I make it 47 1/2" wide overall (by narrowing the frame, the frame being 46" wide)

The 48"sheet overhangs 1/4" on each side and I "Tap it over" to shed the water.

Then the outside corner at that point is only cosmetic.


Len

Good idea Len! I was thinking of doing the same thing with the outer couple of layers of fiberglass fabric --getting it a little wide and then over-lapping the sides.