I am in no way getting compensated by eternabond, but i wish I was.....   Really tho this stuff is pretty great for quick fixes.  
Since this video was made we have had many rainstorms and its still holding great!  Like I state in the video however you do need to be able to get the surface at leas somewhat dry.  If you cannot do that you may need to use a product that seals wet like waterweld some landscaping adhesives....
Did you miss our previous article... 
https://remodelingvideos.club/roofing/is-your-roof-leaking-the-most-effective-way-to-trace-the-leak-or-repair-location