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Sealing Sheet Tracks


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Here you go : https://www.tradeproducts.co.nz/product/butyl-lap-tape-white-4mm/

I did the same as Fish using Sika 291, the trick is too do the last tighten after it’s hardened but before it’s fully cured. And tighten the nuts not the screw of course

Yes, 291 is the stuff, and 180S is spot on, and in better detail than me. It is definitely a 2 person job. Firstly to lay down the sika and place the track on it, then to tighten the nuts while someon

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2 minutes ago, L00seM00se said:

Only thing I’ve ever been able to get working properly is Butyl Tape. I bought three rolls when I was in the states last as I couldn’t find it here. 

Yes I get that answer a lot but I can't source the stuff here in NZ! 

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3 hours ago, Jasetheace02 said:

Has anyone ever successfully sealed one of these tracks? Both of mine are leaking through into the cabin. Planning on first sail in a few weeks but I can't for the life of me stop water getting into this boat (rain that is)!!!

IMG_2070.jpeg

Yes, I've done it. Not sure if its the exact same track, but I've sealed track that takes genoa car on the side decks.

Take the whole thing off, seal underneath the track and around each bolt hole with sika sealant. Re-mount the track, and ONLY FINGER TIGHTEN the bolts. Let the sika set, one or two days, and then snug them down firm, but don't try cranking the f*ck out of them, just snug. Idea is to leave a bed of sika, and not squeeze it out. You've got to put light pressure on to get it to bed down, but wait for it to set before putting any tension on the bolts.

We also had little plastic inserts that go between the bolt head and the track. Shaped kind of like a funnel. I understand these also help seal and stop water ingress from around the top of the bolt. Fairly sure our track was harken, with harken plastic insert thingees. I remember getting snaffueed cause we extended the track and ended up with metric hole spacings and imperial track, got half way up the track and the existing bolt holes wouldn't line up....

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48 minutes ago, Fish said:

Yes, I've done it. Not sure if its the exact same track, but I've sealed track that takes genoa car on the side decks.

Take the whole thing off, seal underneath the track and around each bolt hole with sika sealant. Re-mount the track, and ONLY FINGER TIGHTEN the bolts. Let the sika set, one or two days, and then snug them down firm, but don't try cranking the f*ck out of them, just snug. Idea is to leave a bed of sika, and not squeeze it out. You've got to put light pressure on to get it to bed down, but wait for it to set before putting any tension on the bolts.

We also had little plastic inserts that go between the bolt head and the track. Shaped kind of like a funnel. I understand these also help seal and stop water ingress from around the top of the bolt. Fairly sure our track was harken, with harken plastic insert thingees. I remember getting snaffueed cause we extended the track and ended up with metric hole spacings and imperial track, got half way up the track and the existing bolt holes wouldn't line up....

Ok sounds good thanks Fish. I am using Mastersil SMP 50, should be ok?

IMG_2071.jpeg

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No idea sorry. I know there is sika, and there is sika. Has a particular number (which I can find if you want). a lot of that sealant stuff looks the same, but performs completely differently. If you are going to go to the effort of doing the job again, I'd make sure you get the right stuff.

 

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2 minutes ago, Fish said:

No idea sorry. I know there is sika, and there is sika. Has a particular number (which I can find if you want). a lot of that sealant stuff looks the same, but performs completely differently. If you are going to go to the effort of doing the job again, I'd make sure you get the right stuff.

 

Thanks Fish, if you could get the Sika number that would be great, may as well give myself the best chance of success, don't want to be doing it a 3rd time!!!

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