Leaking zinc gutter pierced by corrosion: why? Emergency repair and what lasting solution?
published: 07/07/21, 11:10
I had noticed leakage problems on some of my downhill gutters for a few years now ... in particular more or less significant oozing ... but I had left "pissed" (that's the case to say!) . With the violent storms of the last few days I decided to take a closer look ...
Well I was quite surprised to find that some gutters are pierced with multiple corrosion holes and become so thin that you can go through them and tear the gutter with your fingers !!
I think they are lead and / or tin welded zinc gutters ... they are a little less than 40 years old and the roof is slate with stainless steel hooks. I do not see well the electro chemical incompatibility that it could have? I have very little dirt in this gutter which has never been clogged!
So question: where does this corrosion come from? I don't understand ... Acid rain, poor material quality?
For the emergency repair part, I cut out the most corroded parts and I plated some old plastic flowerpot as I could (a few necklaces, a little silicone glue). And I covered them with a roof waterproofing adhesive such as scotch Butyl ... it seems to be working pretty well ... for the moment!
For the least impacted holes, I simply put a bead of silicone glue ... it will hold what it will hold ...
I would especially like to understand where it comes from and see if we can possibly avoid it with a simple tip upstream?
Well I was quite surprised to find that some gutters are pierced with multiple corrosion holes and become so thin that you can go through them and tear the gutter with your fingers !!
I think they are lead and / or tin welded zinc gutters ... they are a little less than 40 years old and the roof is slate with stainless steel hooks. I do not see well the electro chemical incompatibility that it could have? I have very little dirt in this gutter which has never been clogged!
So question: where does this corrosion come from? I don't understand ... Acid rain, poor material quality?
For the emergency repair part, I cut out the most corroded parts and I plated some old plastic flowerpot as I could (a few necklaces, a little silicone glue). And I covered them with a roof waterproofing adhesive such as scotch Butyl ... it seems to be working pretty well ... for the moment!
For the least impacted holes, I simply put a bead of silicone glue ... it will hold what it will hold ...
I would especially like to understand where it comes from and see if we can possibly avoid it with a simple tip upstream?