How good is butyl tape

[stuartwineberg]

I sure hope it works ok - we have just fitted two Blake seacocks to a friends boat together with a Radice rubber stern gland so will be on board when launched. We used the same butyl tape I used to bed dg units to wooden windows in our extension. I did test it with a cleat on a piece of plywood and it certainly seemed to work ok.

Hmm. My understanding is that butyl tape and it’s very sticky friend in a tube arbormast is a non setting compound for bedding above water. I would use sikaflex or ct1 or pu40 for skin fittings as it’s adhesive as well as a sealant.

 

[mitiempo]

I sure hope it works ok - we have just fitted two Blake seacocks to a friends boat together with a Radice rubber stern gland so will be on board when launched. We used the same butyl tape I used to bed dg units to wooden windows in our extension. I did test it with a cleat on a piece of plywood and it certainly seemed to work ok.

Should not be used underwater though. Sika Flex is a better choice under the waterline.

Also should not be used where fuel can get to it as it will dissolve.

 

[PabloPicasso]

As long as above the waterline it's fab. If below the water line tek7 is great. Unlike sika tek7 works in the wet, even claimed to work under water. I sealed a flat roof with it recently, whilst it was raining, and it worked a treat.

Butyl tape never goes off, so can also be reused to rebed removed fittings if needs be, as long as its above the waterline.