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MAKING BITUMEN WATERPROOFER BRUSHABLE AGAIN:

Discussion in 'Roofing and Guttering' started by RONCHAM, 25 Aug 2014.

  1. RONCHAM

    RONCHAM

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    Hi all - I've been using brush-applied fibre filled bitumen waterproofer (from a 5 litre tin). At risk of being told it should have been obvious, the instructions did not advise to stir before or during use (so I didn't!). Initially the contents were paint consistency and brushed on easily - but after about two hours (and quite suddenly) became quite stiff and impossible to apply by brush.

    My question is how do I make this waterproofer brushable again. Do I add white spirit or could I add water??

    The instructions DID say to clean all tools with white spirit.

    Advice would be appreciated.

    Regards.
     
  2. gregers

    gregers

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    think i would be doing the whole lot again and this time make sure you stir the tin.
     
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  4. RONCHAM

    RONCHAM

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    Thanks for that.

    Not quite the answer I was looking for and I'm not sure how well-informed?? If it was critical I'm sure the instructions would have made mention - even a humble tin of paint tells you to stir the contents (except for non-drip).

    I've seen this problem raised elsewhere but the answers have always been a bit ambiguous - I'm presuming it depends if the waterproofer is water or solvent based?

    The instructions do at least recommend two coats - at right angles to each other.

    Further replies will be appreciated.

    Regards.
     
  5. Burnerman

    Burnerman

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    If white spirit is the solvent for the brushes, then use this to thin your bitumen......definitely not water!
    Keep the solution on the thick side so you get a heavy coat - but not so thick that's it's difficult to apply.
    John :)
     
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  7. RONCHAM

    RONCHAM

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    Thanks for that - a much more useful answer! And confirmation of what I suspected.

    It probably is a good idea to stir the contents from time to time and some people have suggested turning the tin upside down for a time. But I'm surprised there's no mention in the instructions - they usually cater for idiots (like me!).

    Regards.
     
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