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    repairing cast iron gutters and drainpipes
    • #1
    • 15th Apr 09, 5:34 PM
    repairing cast iron gutters and drainpipes 15th Apr 09 at 5:34 PM
    I'm hoping to repair a lot of rather elderly cast iron gutters and drainpipes - I can't see any actual holes, but they are quite rusty and in need of repainting.

    Listed building, so replacing with plastic is not much of a solution here!

    Is there any easy (or easier) way to go about renovating them? As far as I can see, they would need taking off the roof, getting the rust off, repainting and then putting back up again. Sounds like a fair amount of work...
Page 1
    • savemoney
    • By savemoney 15th Apr 09, 5:41 PM
    • 12,869 Posts
    • 11,484 Thanks
    • #2
    • 15th Apr 09, 5:41 PM
    • #2
    • 15th Apr 09, 5:41 PM
    I have cast iron drainpipes/guttering.

    I have at present applied gutter sealant to prevent a leak. I will later clean gutters, remove any loose paint, and paint with Ronseal paint that can be applied to guttering and on top of rust (hammerite also do a paint that can be applied on rust). Then apply two coats of bitumen paint this is on inside of the guttering, the outside isnt too bad
    • a&akay
    • By a&akay 15th Apr 09, 6:07 PM
    • 522 Posts
    • 188 Thanks
    • #3
    • 15th Apr 09, 6:07 PM
    • #3
    • 15th Apr 09, 6:07 PM
    I have a 1953 house with the problem you describe. However, I also have a scaffold tower with wheels that reaches all the gutters. If you feel at the very back of the underside of them you are likely to encounter a crumbly layer, ie corrosion. I scuffed this off by hand and wire brushed where accessible. I googled 'Hammerite' and bought the cheapest black 5 litre version plus lots of 3" cheap brushes, as it's not worth cleaning them, the price they are. I painted the underside and topside using plenty at the back problem area. I removed the down pipes and found most were showing signs of a 'split' down the back. I filled these with 'gun and nails' smoothed off by hand and then painted with Hammerite. All the wooden spacer bobbins were rotten so I replaced them with plastic. The nails I replaced with galvanised 10mm bolts using plastic rawlplugs. Admittedly a lot of work but hopefully not repeated in the next 10 years +.
    Last edited by a&akay; 15-04-2009 at 6:09 PM.
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