I purchased the 360 Siphon waste vents to replace the noisy Xtreme vents on my black and gray water waste vents. The 360 Siphon vent requires 4 screws to attach to the roof. The installation instructions say to use the appropriate size screw for your roof. Does anyone know the appropriate size (or length) for Winnie fiberglass roofs?
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2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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I purchased the 360 Siphon waste vents to replace the noisy Xtreme vents on my black and gray water waste vents. The 360 Siphon vent requires 4 screws to attach to the roof. The installation instructions say to use the appropriate size screw for your roof. Does anyone know the appropriate size (or length) for Winnie fiberglass roofs?
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
Since the fiberglass skin is pretty thin and there is nothing under that skin for the screws to bite into, I'd not use anything longer than 1/2", 3/4" max.
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2007 Country Coach Allure Siskiyou Summit, sold/traded Nov. 2018.
2019 Grand Designs 384GK-R 5th wheel. Glen Allen, VA
Looking at the 360 Siphon Vent base, I would use a #8 3/4 inch sheet metal screw preferably in stainless steel. Using Dicor sealant under and over the base of the vent.
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