Join Date: Oct 2009
Location: Swarthmore, PA
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Re: Bedding Deck Hardware With Butyl Tape
That's what was used on my hatches. The thing I don't understand is why they used Black on all the hatches and white or off white on the hull deck joint. Cleaning all the excess off as I go but why Black on deck??
Are you sure they didn't use a curing adhesive/sealant, like Sikaflex 295? That's very common for around hatches, etc. It's totally different stuff from the butyl tape.
Carbon black pigment has well known properties as a free radical scavenger, which when formulated into sealants, rubber leg ends, wire ties, and other products can make them much more UV resistant. That's why you often see black sealants used in high sun areas. The white stuff works fine in more shadowed areas like hull deck joints.
Rick S., Swarthmore, PA
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2001 Catalina 34MkII Tall Rig Wing Keel Breakin' Away, Universal Diesel M35B, Mantus 35 lb. anchor, sailing out of Rock Hall Landing Marina
Last edited by TakeFive; 11-19-2015 at 09:08 AM.