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Thread: coracle coated in bitumen paint

  1. #1
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    Default coracle coated in bitumen paint

    Does anyone know what I can put on / over bitumen paint to stop it from constantly being just a tad tacky?

    I have made a coracle but after a few days of drying I lent it up against a wall and it stuck to the wall (only slightly) so it looks like it's fine unless some presure is applied. I am hoping that I can cover the bitumen with some sort of coating to stop the stickiness.

    ...or am I just being fussy and perhaps it'll harden more?
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
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  2. #2

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    Quote Originally Posted by andylincs View Post
    Does anyone know what I can put on / over bitumen paint to stop it from constantly being just a tad tacky?

    I have made a coracle but after a few days of drying I lent it up against a wall and it stuck to the wall (only slightly) so it looks like it's fine unless some presure is applied. I am hoping that I can cover the bitumen with some sort of coating to stop the stickiness.

    ...or am I just being fussy and perhaps it'll harden more?
    Kiln dried sand the same stuff used on roofing felt may help.

  3. #3
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    Quote Originally Posted by Sonar View Post
    Kiln dried sand the same stuff used on roofing felt may help.
    Thanks for the idea, although a bit too much hassle i think as it'd require another coat of bitumen to stick the sand to. I tried Danish oil but that melts the bitumen and although it works it thins or probably disturbs the integrity of the bitumen.

    I guess a spray of silicone like you put on car bumpers or blackboard paint as it dries fully but I don't want to try other things (cost) unless someone has experience.

    If there isn't a quick cheap easy way then perhaps I'm making more of the issue than I should
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    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
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  4. #4

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    I'm not sure exactly what you have applied but it is normal to use pitch, the hard stuff which roofers use, boil it up on a stove and add just a little linseed oil to help it stay flexible, apply it quickly before it goes cold and hard again.

    If you have used 'bitumen paint', you may need to check the intsructions to see how long it takes to set. How about sprinkling it with talcum powder?

  5. #5
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    Quote Originally Posted by Adrian Cooper View Post
    I'm not sure exactly what you have applied but it is normal to use pitch, the hard stuff which roofers use, boil it up on a stove and add just a little linseed oil to help it stay flexible, apply it quickly before it goes cold and hard again.

    If you have used 'bitumen paint', you may need to check the intsructions to see how long it takes to set. How about sprinkling it with talcum powder?
    Bitchumen paint seems to be the modern way of doing it. It dries hard but flexible but hard only to the point that touching it feels dry. Any pressure applied seems to make it tacky.

    ...the tin only says leave 2 hrs between coats, no overall time to dry. Can't put talc over it as it is dry.

    Perhaps leave another week is the answer as it has only had 3 days to dry or so.
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    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  6. #6
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    I'm with the dust folk. I'd guess dusty soil, talc (don't worry about which scent to use). Anything 'dusty' will, or should, absorb the stickiness and/or make it dry out.
    http://www.davidwperry.blogspot.com/

  7. #7
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    Got it sussed!...I think.

    I found, just laying around, an old tin of "Holts Bitumen undershield" for cars....sprayed that over the Bitumen paint and it sets totally dry within very few minutes.
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  8. #8

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    Hi Andy,

    I'm just in the process of making a coracle too. Funily enough I've just got to the stage where I'm about to paint it in bitumen! I was wondering about it finishing a bit sticky, so your post has come very timely indeed.



    Does this look like the same stuff you've used:
    http://recommendations.ebay.co.uk/Ho...d=160674397395

    Many thanks
    Lee.
    Last edited by ReactionJackson; 5th-April-2012 at 07:33 AM.

  9. #9
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    Hi Lee,

    Your's looks a bit more professional than mine I'll post some pics and do a blog soon. It may be that the bitumen paint sets well enough but I didn't wait. I would suggest waiting before buying the holts stuff, just to save some money.
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  10. #10
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    Quote Originally Posted by ReactionJackson View Post

    Does this look like the same stuff you've used:
    http://recommendations.ebay.co.uk/Ho...d=160674397395

    Many thanks
    Lee.
    Yes - exactly
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  11. #11

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    Excellent. I'll be painting the bitumen this weekend, but my boat won't be going near water for over a month. Hopefully that should give it ample time to dry.

    Myself and two friends are each making one as part of a 'coracle challenge'. The idea is that we each build a boat, then use our boats together for the first time in May. Strictly no practicing allowed before the big day when we'll be doing a bit of a river pub crawl! All in aid of immaturity and fun!


    I may well pop a wee blog together as Iíve enjoyed building this. Next stop is a marine ply canoe or maybe a cedar strip canoe (in for a penny...)

    Thank you very much for your prompt help

  12. #12
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    Quote Originally Posted by ReactionJackson View Post
    I may well pop a wee blog together as Iíve enjoyed building this. Next stop is a marine ply canoe or maybe a cedar strip canoe (in for a penny...)
    Snap!!! ...but I have decided cedar is too expensive so have asked my local woodman to price up cutting another type of wood to 6mm strips, if too much then I will do plywood canoe.

    I have already started on a paddle and thwartes for the canoe and have got some free plans for a wood canvas canoe which I am going to use for the shape. Once I have the forms done I will decide on the type of wood (strip or ply).

    My Coracle was just to prove a) I could do it and b) I could start and finish a project c) Learn along the way...
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  13. #13

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    Hi Andy,

    Well rain stopped play this weekend and the bitumen stayed safely in the tin! I'm hoping it'll get it done one evening now... bloody April showers.

    Another Lee (one of the other coracle makers) and I were discussing which way to go next this very weekend. We leant towards a quality ply canoe as 1) its easier, and 2) because I already have one to copy from!
    On that note, the one I have is a very good example, although it's getting tired through heavy use. You're welcome to reference it and I'll happily send you pics if you go down that route. I'm only down the road.

    We looked into the cedar strip canoe and the cost became painfully apparent - also I suspect wifey would lose patience in 2 years when the garage is stuffed full of expensive kindling (and no canoe)!

    I'll update once I have some black stuff to pick from under the fingernails. In the mean time I doff my boater in your direction sir!

  14. #14
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    A friend and I have just made a wood canvas canoe...minus canvas because the canvas hasn't arrived. It will get covered in bitumen paint because so far the cost has been £45 for wood, £30 canvas and it'll be £15 (ish) for the paint. Took under the week. It's my friends canoe as I'll be doing my own from the same plans only in strips or plywood. The shape is a classic indian canoe and the basic plan can be used for strip/canvas or ply. It's a beautiful shape....I'll dig out the URL of the free plan.
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  15. #15
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    http://www.svensons.com/boat/?p=RowBoats/LittleChief the plans are 4 pictures so you need to "enlarge" the pics to fit A4 paper before printing.

    Coracle


    Wood canvas canoe - almost finished and steaming the last piece. We then painted fence preservative on it and will cover it in canvas and bitumen that. The plans above were for 16ft but that wouldn't fit into the workshop so we shortened it by 2ft.
    --
    Andy

    "Nature Deficit Disorder" causes ADHD, get kids outdoors.
    http://marstonvaleforestschool.co.uk

  16. #16

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    I'm loving that Andy... great stuff!

    That's cetainly given me food for thought.

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