Sikaflex 291 vs 591

[Dockhead]

Any opinions about which is better for through hulls?

[AKA-None]

I’ve used life caulk and two seasons so far

[slug]

Originally Posted by Dockhead

Any opinions about which is better for through hulls?

I’ve only used 291...it’s been the industry standard

I believe 591 has the same mechanical properties but is formulated to confirm to new health and safety rules

[Dockhead]

OK, thanks. I will be on the hard for a week at the beginning of April, and will replace the last of my ball valves and probably a few through hulls. I'm ordering all the materials from SVB. I guess I'll go with the 291. Cheers.

[blue-moon]

My tech guy used sika 292 to replace tru-hall valves . and now. I hear different opinions about ıt. some say 291 is better. some says 292 is not good for salt water. Please advice if yoıu have better experıence.