Polycarbonate rooflight leak - sealant?

Joined
9 Aug 2010
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Country
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Hi all,

2 issues:

1. There is a small hole/crack in the top layer of polycarbonate, water has seeped in and made a lovely black stain.

2. The metal border holding the polycarbonate in place has pulled away slightly from the polycarbonate in several places, causing a gap. There is a buildup of a year's worth of moist black dirt and moss as a result, which i've now removed.

What's the best way of sealing the hole and the gap?

Will a sealant tape be good enough, if so, which?
Or how about silicone sealant?

Thanks a lot
 
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