Forum Discussion

joeshmoe's avatar
joeshmoe
Explorer
Mar 22, 2019

Do Skylights Just crack?

I haven't been up there for about 6 or 7 mos. Didn't notice it then, but I wasn't looking either. It makes me wonder if it's been there all along for 5 years, but due to the tint of the plastic, I just never noticed it. It's just been sitting in the drive way since Oct.

Anyway, recommendations?

Do I pressure test it before going to the trouble of replacing it? If it doesn't blow bubbles, should I go ahead and Dicor over it and seal it up? Or get a new one and check for water damage? We did have some significant rain over the last couple months, so there's that. I sprayed some water on the crack,but it didn't suck it or seep in. :h

  • Joe417's avatar
    Joe417
    Explorer
    Mar 22, 2019
    I had this happen on my AF.

    I could see the water in it from the inside. I took it off and separated the two halves to clean out the water.

    Put it back on, sealing the two halves with Dicor. I reinstalled it with the screws going through some 1" 18 gage metal banding to help spread the pressure and then sealed the outside, high enough up on the plastic to cover the crack. No problems now for 4 or 5 years.

    I found a new skylight back then for I think around $140. Never did order it.
  • fj12ryder's avatar
    fj12ryder
    Explorer III
    Mar 22, 2019
    They get stiffer and weaker over time and finally the flex breaks the plastic.

    My thought is why take a chance. They aren't horribly expensive, they're not horrible to replace, and if you do have water damage, it would be good to find out before it becomes a horrible experience.

    JMO of course.

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