Sikaflex 291, how fast to cure?

[BoatFisho]

How quickly does sikaflex cure in, the 100ml small tube? I know there is a fast cure version, but dont want to spend that much as its a little job.

 

[jbcurt00]

Cure depends on application thickness and humidity

 

[BoatFisho]

Very thin coat attaching rubber to gel coat, humidity is about 70%

 

[bilge rat jim]

• Density: 10.3 lbs per gal
• Tack Free Time: 60 min.
• Rate of Cure: 1/4-in x 1/4-in bead 9 days at 40F/30% R.H.
  1/4-in x 1/4-in bead 4 days at 73F/50% R.H.
  1/4-in x 1/4-in bead 3 days at 73F/70% R.H.
  1/4-in x 1/4-in bead 1 day at 100F/75% R.H.
• Shore A Hardness (ASTM D2240): 45-50
• Elongation at Break (ASTM D412): >600%
• Tensile Strength (ASTM D412): 221 PSI
• Lap Shear Strength (ASTM D1002): 165 PSI
• Peel Strength: 35 lbs/in on fiberglass, 25 lbs/in on gelcoat
• Application Temperature: 40F to 110 F
• Service Range: -40F to 190 F
• Color: Black, White
• Sandable, paintable and is waterproof

 

[BoatFisho]

So probably not the best choice for a keel protector needing quick attachment.

 

[bilge rat jim]

What is hull material, and the keel protector?

 

[BoatFisho]

I ended up peeling the keel protector as it had so many pockets and holes it wasnt worth it. I actually dont know what brand it was, couldnt recognise it against the major players otherwise I would have gone for the warranty. Thanks for the advise on sikaflex, i think it sounds a good option for fittings where you may one day want to remove them.