Sikaflex not curing
Submitted by Travisd on Sun, 2015-10-25 15:11
Anyone out there had dramas with sikaflex not curing
washing down boat this morning and rubbed hand over the transducer (thru hull) and got a white stain. Upon closer inspection the sikaflex appeared wet when u touch with finger.
Been installed over six months. Interior side seal seams ok but going to pull it out this week but it's not a fun job
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Baron Sportsman
Just the depth that Varies
.thumbnail.JPG "plastics jack")
Scotte
Posts: 1142
Date Joined: 07/12/06
Sometimes it stays tacky bit
Sometimes it stays tacky bit like blue tack if its been cleaned up with acetone etc..
Rob H
Posts: 5745
Date Joined: 18/01/12
are you sure its Sika or
are you sure its Sika or just white sealant that looks like Sika?
I have used Sika 291/295 etc for 27yrs and only time Ive seen it not curing is in the freezer.
Give a man a mask, and he'll show you his true face...
The older you get the more you realize that no one has a f++king clue what they're doing.
Everyone's just winging it.
dodgy
Posts: 4563
Date Joined: 01/02/10
Im with rob. I used some
Im with rob. I used some stuff from Bunnings that was very close to sika but a little cheaper. Never cured and was a fair pain to clean up the mess.
Genuine only for me.
Does anyone know where the love of god goes, when the waves turn the minutes to hours?
JohnF
Posts: 2836
Date Joined: 07/07/10
Many times trying to remove
Many times trying to remove Sika I have wished it had not cured.......even in the freezer the shit goes like rock after a while.
Boston Whaler 235 Conquest......getting the flogging it was built for.
Travisd
Posts: 315
Date Joined: 07/05/11
1st time for me too
ive always sworn by the stuff. Will drag out the tube tomorrow.
it may have been cleaned with acetone. What does the acetone do?
It'll be getting redone Purely for peace of mind
Baron Sportsman
Just the depth that Varies
Scotte
Posts: 1142
Date Joined: 07/12/06
Pretty much melts it.even
Pretty much melts it.even if its cured the acetone will still break down the sikaflex.surface will become little tacky and if you were to rub it with a black rag you'll get a bit of white sika on it.
I reckon thats what is happening with your transducer and explains why the inside is fine!
luke t
Posts: 163
Date Joined: 22/02/10
There is one type of Sika
There is one type of Sika that never actually sets hard .
i can't remember which number it is , Maybe that's what has been used !!!
Starbug
Posts: 563
Date Joined: 27/08/09
Sika make a range of
Sika make a range of products. you need to make sure you have selected the right type for your job. And yes some are designed not to set.
Swompa
Posts: 3786
Date Joined: 14/10/12
Many years ago, I made a rope
Many years ago, I made a rope sling setup to lift a 3.5t keel. After all the splicing was done, I coated the sling in sikaflex to offer a bit of UV protection. The sika took months to go off.
I was working at a marine chandlery at the time and spoke with the sika rep when he came in and he said that it was most likely due to exposure to chemicals or similar.
It can happen but these ropes hadn't touched chemicals, at least whilst I had owned them.
marrisy
Posts: 198
Date Joined: 08/09/11
metho causes similar
Used metho to clean up the hull when repairing the rub rail on the boat, the stuff i used was from Bunnings, and the meto caused it to go tacky, like the kids sticky hand toy. Months later it still hadnot set, Eventualy scraped it of with a blade.
Marrisy.
Starbug
Posts: 563
Date Joined: 27/08/09
Meths/alcohol is a solvent
Meths/alcohol is a solvent for marine sikaflex. Meths can be used to remove old aplications.
Rob H
Posts: 5745
Date Joined: 18/01/12
as far as Im aware nothing
as far as Im aware nothing removes cured Sika beside mechanical removal.
Give a man a mask, and he'll show you his true face...
The older you get the more you realize that no one has a f++king clue what they're doing.
Everyone's just winging it.