Sikaflex

Shaz · 13 October 2009, 19:55

Right, everyone has mentioned this stuff, but its seems to be available with lots of different numbers on ! Do I want 221, 255, 291, 512 or what ?? Or does that just refer to the colour, and if so, what number's orange ?

Thanks !

chewy · 13 October 2009, 19:58

Only ever seen, black, grey or white. The numbers refer to what its used for, I think 291 is the dogs danglies.

http://www.sika.co.uk/uk-home/ind-uk...-products2.htm

Some of it has to be left to cure for a long time before been submersed.

Paul E · 13 October 2009, 20:01

My dad swears by 291 and he's been fixing boats for 40 years

chewy · 13 October 2009, 20:05

A word of warning thought it does stick to everything and is a pain to get off again!

Shaz · 13 October 2009, 20:14

Wow you guys are quick ! Cool, will order some of that too. If I'm not here this time next week it's cos I've got stuck to something.....

JSP · 13 October 2009, 20:36

Quote:

Originally Posted by chewy

A word of warning thought it does stick to everything and is a pain to get off again!

Doesn't stick to some plastics. I know I got some on my fuel tank ans it pealed off very easily after it dried.

Nasher · 13 October 2009, 20:42

As mentioned 291 is what you need for most jobs around a boat.

Also as mentioned, be warned, it sticks like Sh1t to a blanket.

So..............for example............ it wouldn't be a good idear to fix the boat in the new 'T' shirt your wife brought you just two days beforehand for your birthday.

Nasher

Shaz · 13 October 2009, 20:56

Doh!

I'm always getting in trouble for trashing clothes... you want to wear something nice & warm when you're mucking around outside and before you know it the sleeve of your ridiculously expensive waterproof jacket is covered in oil. And I did that before I even owned a boat.... at least if it was 2 stroke oil the colour would've matched.

chewy · 13 October 2009, 20:59

Quote:

Originally Posted by Shaz

Doh!

I'm always getting in trouble for trashing clothes... you want to wear something nice & warm when you're mucking around outside and before you know it the sleeve of your ridiculously expensive waterproof jacket is covered in oil. And I did that before I even owned a boat.... at least if it was 2 stroke oil the colour would've matched.

My problem is wearing overalls or old clothes then walking through the house and getting grey flowcoat every where, it was on the curtains and wouldn't come off my arms after a bath so then ended up stuck to the bath and pillows!

I now get washed in acetone before coming back into the house if I'm doing fibreglass work, it makes you smell lovely too!

Nos4r2 · 13 October 2009, 21:06

If it's for the sealing up the small holes in your transom, either 221 or 291 will do the job just as well.

Your engine mounting bolts need 291 if they aren't sealed.

Shaz · 13 October 2009, 21:07

I haven't got into the joys of fibreglass yet, maybe in a few months....

chewy · 13 October 2009, 21:11

Quote:

Originally Posted by Shaz

I haven't got into the joys of fibreglass yet, maybe in a few months....

Best done in a small room with lots of heaters and no ventilation...

Jizm · 13 October 2009, 21:12

Quote:

Originally Posted by Shaz

I haven't got into the joys of fibreglass yet,

You will...

Shaz · 13 October 2009, 21:13

Quote:

Originally Posted by Nos4r2

If it's for the sealing up the small holes in your transom, either 221 or 291 will do the job just as well.

Your engine mounting bolts need 291 if they aren't sealed.

Yes it's for all the bits you pointed out, and possibly also sticking down a bit of wood to strap a pair of Chewy's fuel tanks to (I expect I can find a previous thread on that sort of thing though).

Nos4r2 · 13 October 2009, 21:22

Quote:

Originally Posted by Shaz

Yes it's for all the bits you pointed out, and possibly also sticking down a bit of wood to strap a pair of Chewy's fuel tanks to (I expect I can find a previous thread on that sort of thing though).

I'd screw the wood down-just seal the screw holes into the deck with Sikaflex 291. That way if you ever want to change it you'll have a bit more chance of removing it.

Sikaflex is an adhesive as well as a sealant and doesn't give up easily if applied to a clean grease-free surface.

chewy · 13 October 2009, 21:46

I know I haven't done this right but I just sikaflexed two bits of wood either side of the deck and out a stainless eye on each.
I've tried pulling the rings off the deck and they won't budge, I can strap the tanks down so the ratchet is tight and they're fine.
Obviously its best to screw them but I didn't want any more holes in the deck.

Tim M · 14 October 2009, 14:09

Acetone is good for getting it off your skin.

tinker · 14 October 2009, 14:20

If you Google sika 221 or sika 291 it gives you the pdf spec sheet of the materials properties. Should would work for any of the sika product codes. Looking at the 291's spec it says "Do not use as a deck seam sealant."

Adrian Brighton · 18 October 2009, 14:19

This is probably a stupid question, but thought one of you guys would know.

Would this 291 stuff work to bond marine ply into a PVC slot for a transom? And, if so, how would I prepare Marine Ply that will have been sealed, stained and varnished?

I would be grateful for any experiences in this or similar shared..

Cheers,

Nos4r2 · 18 October 2009, 16:07

Adrian-for your Zed you need Bostik 2402 and remove all the old glue before glueing it.