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  1. #1
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    Default Sikaflex alternative for sealing caravan

    Hi guys,

    I need to reseal a small bit of my caravan. I did some sealing yonks ago and it needs some touch ups. But for the life of me I cannot remember what I bought. I'm sure it was sikaflex, but my local builders only has Sikaflex 11FC and I'm not sure if I can use it.

    Are there any other alternatives?

    This is just a patch job for now for going camping at the end of April. I would like to take the caravan in for a pro job after that to have the whole van resealed properly.

    I know I should not use normal silicone.
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  2. #2
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    Default Re: Sikaflex alternative for sealing caravan

    sikaflex alternative, is soudal polyurethane sealant. Bought some yesterday at our local small hardware for R92.00. Used alot before and works well

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  4. #3
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by Dwayne P View Post
    sikaflex alternative, is soudal polyurethane sealant. Bought some yesterday at our local small hardware for R92.00. Used alot before and works well
    Thanks. Saw that at Builders.
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    Default Re: Sikaflex alternative for sealing caravan

    Would this be it?

    https://www.builders.co.za/Fasteners...00000000614583

    I suspect they only have it in black.
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    Default Re: Sikaflex alternative for sealing caravan

    I know that the marines sikaflex can only be had around Dbn. I tried calling locally as they HO is up here, but they could only sell me a full box of many more tubes than i needed.

    Speak to them and ask them who has stock of the product you need, or if it is a temp job, just bodge it with some bathroom silicone and get the guys to do it when they strip and reseal.

    For boats, people seem to swear by Sikaflex, so it seems better than the competing products based on user experience?

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  8. #6
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by stephenplumb View Post
    I know that the marines sikaflex can only be had around Dbn. I tried calling locally as they HO is up here, but they could only sell me a full box of many more tubes than i needed.

    Speak to them and ask them who has stock of the product you need, or if it is a temp job, just bodge it with some bathroom silicone and get the guys to do it when they strip and reseal.

    For boats, people seem to swear by Sikaflex, so it seems better than the competing products based on user experience?
    Heard that normal silicone eats away at the alu. I guess 4 days won't hurt. I could always just remove it when I get home.

    I was quoted R5500 to reseal the whole van. Not bad.
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by IcePick88 View Post
    Would this be it?

    https://www.builders.co.za/Fasteners...00000000614583

    I suspect they only have it in black.
    +1 on the soudalflex.

    It's available in white, black & grey. The colour can only be found just above the barcode or if you read german on top on the tube next to opening, and builders packs them all together so you have to rummage a bit.

    I always use grey on my alu canopy when a bolt goes through or wires etc and no leaks. The black I used all over the cab of the Defender cause well it's a Defender and no more leaks.
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  11. #8
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by IcePick88 View Post
    Would this be it?

    https://www.builders.co.za/Fasteners...00000000614583

    I suspect they only have it in black.
    that is the same one. We have it available in White, grey/silver and black.

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  13. #9
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by Sheldon93 View Post
    +1 on the soudalflex.

    It's available in white, black & grey. The colour can only be found just above the barcode or if you read german on top on the tube next to opening, and builders packs them all together so you have to rummage a bit.

    I always use grey on my alu canopy when a bolt goes through or wires etc and no leaks. The black I used all over the cab of the Defender cause well it's a Defender and no more leaks.
    Great thanks. I was standing at builders trying to figure out where the hell the color is written. I'll go have another look!
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by IcePick88 View Post
    Great thanks. I was standing at builders trying to figure out where the hell the color is written. I'll go have another look!
    Took me 37mins staring at every inch of the stupid thing until I saw it the first time
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  16. #11
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by Sheldon93 View Post
    +1 on the soudalflex.

    It's available in white, black & grey. The colour can only be found just above the barcode or if you read german on top on the tube next to opening, and builders packs them all together so you have to rummage a bit.

    I always use grey on my alu canopy when a bolt goes through or wires etc and no leaks. The black I used all over the cab of the Defender cause well it's a Defender and no more leaks.
    same here. use black for rubberising in load bin that has been damaged. Silver in seams on my stainless off road trailer.

  17. #12
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    Default Re: Sikaflex alternative for sealing caravan

    SikaFlex FC11 is perfect.
    (The other may be as good at slightly cheaper -I have not used it. Pay R150 for FC11 in non-Builder's shop here -Buco are at R150 also at the moment -I think)

    Colour in white,grey,black, brown -colour printed on barcode label-AND olour-coded by nozzle colour!
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  19. #13
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    Default Re: Sikaflex alternative for sealing caravan

    Wurth has an equivalent that doesn't need to be finished. You dispense as you need it.
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  21. #14
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    Default Re: Sikaflex alternative for sealing caravan

    Silkaflex could be difficult to remove if it's only a temporary job.....it's that good!
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  22. #15
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    Default Re: Sikaflex alternative for sealing caravan

    Den Braven polyflex

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  24. #16
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    Default Re: Sikaflex alternative for sealing caravan

    Quote Originally Posted by RvanZ View Post
    Den Braven polyflex
    is this still available. I have used it in past, not stocked in our local store anymore

  25. #17
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    Default Re: Sikaflex alternative for sealing caravan

    Soudaflex - same as sika just more economical. NEVER use silicone, acetic acid chows alu or any metal for that matter even stainless
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  27. #18
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    Default Re: Sikaflex alternative for sealing caravan

    Can this Soudaflex be used on yacht deck fittings?

  28. #19
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    Default Re: Sikaflex alternative for sealing caravan

    Sikafex FC11 is nowadays used a lot in marine applications, be it on decks or to combine some compound connections.

    It is meant for permanent use and rather difficult to remove once it is fully cured. The density and strength is close to the compound of a tyre rubber.

    So it is worth the while to do the Sikaflex job thoroughly the first time round.

    I have used it on a 100 year old diesel boat (1911 built) with steel hull and it has survived the hull itself when redoing the deck and roof structure.
    No more screws or nails, no rust and keep it flexing, so no cracks ever.
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  30. #20
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    Default Re: Sikaflex alternative for sealing caravan

    If i wanna seal off something on the car a usually go to pg glas and buy the silicon they use to install the windscreens of cars... Never any problems thus far...

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