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  • Painting cast iron downpipes

    From somewhere else@"somewhere else"@gmail.com to uk.d-i-y on Wed Apr 29 09:24:30 2026
    From Newsgroup: uk.d-i-y

    I have quite a few cast iron hoppers and downpipes that are showing
    rust. I don't want to replace them with plastic - there are too many and
    some of the hoppers are embedded in the roughcast render - so what's the
    best way to tackle them. Fully stripping the existing paint isn't really
    an option ... so what do I do?
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  • From Andy Burns@usenet@andyburns.uk to uk.d-i-y on Wed Apr 29 09:39:46 2026
    From Newsgroup: uk.d-i-y

    Sparky wrote:

    I have quite a few cast iron hoppers and downpipes that are showing
    rust. I don't want to replace them with plastic - there are too many and some of the hoppers are embedded in the roughcast render - so what's the best way to tackle them. Fully stripping the existing paint isn't really
    an option ... so what do I do?

    Hammerite Direct-to-Rust, despite the name it does need loose rust/paint removing but not all the way to bare metal ...



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  • From John Rumm@see.my.signature@nowhere.null to uk.d-i-y on Wed Apr 29 11:34:21 2026
    From Newsgroup: uk.d-i-y

    On 29/04/2026 09:24, Sparky wrote:
    I have quite a few cast iron hoppers and downpipes that are showing
    rust. I don't want to replace them with plastic - there are too many and some of the hoppers are embedded in the roughcast render - so what's the best way to tackle them. Fully stripping the existing paint isn't really
    an option ... so what do I do?

    Wire brush off the loose rust and paint[1], then use a direct to metal hammered or smooth finish paint.


    [1] by hand, or wire cup brush / poly paint removal disc on an angle
    grinder if there is a large amount to do.
    --
    Cheers,

    John.

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