aluminum to aluminum sealant for roof seam?

[mariannf]

Hi all,
I will have a seam in the roof of my first build. i understand the basic construction approach, but my questions for you is: what sealant should I use for the overlapped aluminum on aluminum at the seam?
many thanks in advance!
Mariann

[aggie79]

I used 3M 4200 marine sealant. OSI gutter and seam sealant is another good product. It is available in "aluminum" color, and can be purchased at our local box lumberyard. Others have used VHB tape.

[mariannf]

I used 3M 4200 marine sealant. OSI gutter and seam sealant is another good product. It is available in "aluminum" color, and can be purchased at our local box lumberyard. Others have used VHB tape.

Thanks Aggie! Have you heard of this stuff it mentions being used in "travel trailer construction" and is at the big box stores: https://www.google.com/shopping/product ... COYQrRIIRQ

[Shadow Catcher]

Or 3M VHB tape

[noseoil]

You can use any good sealant. The Osi Quad stuff is good, the 3M tapes work well & a urethane adhesive like SikaFlex is a good product. With the 3M tapes & urethane adhesives, make sure things are where they are going to stay. Once that stuff sticks, you will have a tough time trying to move things around.

Make sure everything is aligned properly & there are holes drilled & checked for the seams & edges. Once it's done, it will stay in place!

[mariannf]

You can use any good sealant. The Osi Quad stuff is good, the 3M tapes work well & a urethane adhesive like SikaFlex is a good product. With the 3M tapes & urethane adhesives, make sure things are where they are going to stay. Once that stuff sticks, you will have a tough time trying to move things around.

Make sure everything is aligned properly & there are holes drilled & checked for the seams & edges. Once it's done, it will stay in place!

Thanks Noseoil!