Same leak on my Skylight. (Though not as drastic) Dealer used NuFlex 311 sealant to seal skylight trim to fiberglass roof. Coated the perimeter of the skylight and especially the hinges. It flows easily into the cracks. Going on 2 1/2 years with no repeat. May have to remove the previous caulk, it's looks cracked..
http://sealants.sealantcentre.com/wp...311.RV_TDS.pdf
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U.S. Coast Guard retired- 1956-1985
Pensacola, Florida
2016 Siesta 24ST
1972 Moto Guzzi Eldorado
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