exterior sealant

[s.e.charles]

next step before the weather gets much cooler is to apply some 1/16" aluminum flat strips to the roof of my contractor cap. (yes; the one i could not even give away!)

i've had good luck with adhesion results using 3M VHB tape, just not sure of its waterproofing ability. i have found value in using the 3M adhesion promoter, too.

Q: can i use this instead of butyl rubber tape between the aluminum & cap sheathing (also aluminum)?

i will be replacing the self tapping factory screws with nutserts & truss head machine screws. these will go into the cross ribs of 1" x 1" aluminum tube that ARB used.

thanks

 

[Climber Rob]

3M 5200 would be my choice for that application. Works as a sealant and adhesive.

 

[FordGuy1]

3M 5200 would be my choice for that application. Works as a sealant and adhesive.

I have used so many differant brands, the 3M seems to be way better. And your right, as a adhesive, its awesome.

 

[ripperj]

Make sure it’s UV stable or it will turn yellow. 3M makes 4000uv, not as strong as 5200


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[Joe917]

If you use 5200 the cap will not come off without damage, 4200 is a better option. Since you are using the caulking as a waterproofing and not depending on it as an adhesive, butyl tape or caulking may be better.