[Anonymous]

Can anyone recommend the best sealant for resealing hatches, pulpit / pushpit bases and stanchion bases?
Many thanks

[Anonymous]

If it helps below is a list of the recommended applications for Sikaflex products.

Personally I would use 291 for the tasks you list although I know some people prefer to use 295 UV for hatches.
Cheers
Paul.

Sika Marine Products

Sikaflex®-290 DC
is a one-component, elastomeric deck caulking compound which exhibits high UV resistance, shows excellent sandability and is specially designed to caulk teak decks.
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Sikaflex®-291
is a one-component, low viscous, medium modulus, polyurethane-based sealing/adhesive compound. This all-purpose grade is used for general sealing applications.
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Sikaflex®-292
is a one-component, thixotropic, high modulus, structural, polyurethane-based adhesive system. The product is used for a wide range of bonding applications, deck-to-hull bedding of chainplates, through-hull fittings and toe rails.
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Sikaflex®-295 UV
is a fast-curing, one-component, flexible, high-performance polyurethane-based adhesive for bonding and sealing of windows and portholes. Sikaflex®-295 UV is suitable for all types of organic (PC, PMMA) window panes.
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Sikaflex®-296
is a fast-curing, one-component, flexible, high-performance polyurethane-based adhesive for bonding windows and portholes. Sikaflex®-296 is suitable for all types of mineral glass. Its high degree of UV resistance also allows the use of the system as a weatherproof sealant.
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Sikaflex®-298
is a one-component self-levelling bedding and bonding adhesive with very high adhesion properties. The product is easily spreadable with extended open time for large working areas.
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Sikaflex®-852 FR
is a one-component, polyurethane-based sealing and bonding adhesive with excellent flame-retardant properties.
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SikaTransfloor®-352
is a two-component, polyurethane-based compound used for the levelling of uneven decks prior to the application of teak decks.

[Anonymous]

What is the best one to use around the joint of the keel to the hull, as the original mastic has perished in places and i intend to replace all of it

Cheers Ed Holmes

[Anonymous]

Hi Ed,

Personally I would use the 291, however the sealant needs to fully cure before being painted over as it uses atmospheric humidity to cure.

The attached data sheet indicates the length of the curing times which could be as high as 11 days depending on the thickness of the joint, the higher the humidity, the quicker the curing times.

Sikaflex 291 Datasheet

Hope it helps,
Paul.

[Author]

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