Hi all,

I have searched the forum archives and have found lots of useful info re:  black streaks on aluminum caused by caulking.  I see that there are products that will successfully clean the black streaks off. 

My question is:  Is there any way to prevent the black streaks from happening in the first place?  Can the caulk be coated with something?   

Thanks.

When you start seeing a lot of streaking, it is usually an indication that the caulking has been damaged by the UV exposure and weather. Clint uses quality products in his construction of the Blue Ribbon trailers. You should not have a problem for many years, because his newer trailers utilise the tape type of sealants.

If your trailer is but a few years old, I would not mess with your present sealants. After five years or so from new, inspect the roof and determine the integrity of the sealants. If they are dried, brittle and missing, they will need attention.  Chances are, you'll not have to do anything then, nor for another five years.

Hi Gard,

It's a 2008 (in FL) that was not under cover until now.  I wonder consider the amount of streaking to be alot but I'll keep an eye on it.  Thank you for sharing your wealth of knowledge with me. This forum is awesome.