![]() I'm just trying to prevent leaks while being able to use the water for hygiene and drinking. Some clear sealer crap.īen Gorski wrote:Look into Lotusan paint based on the water shedding properties of lotus leaf.ĭoesn't look like they make a paint for old galvanized corrugated roofing material.īy the look of the site, their projects, and their products, it doesn't look like I could pay for anything they offer. I did find something on the Home Depot website. ![]() I'm not doing that, even if it was within my budget. ![]() The only articles I found speaking of rain harvesting and health are about studies on roof materials, things that come already treated, meaning if you want to collect good water, you might need to strip the old roof off, send to a landfill, and buy new roofing material. In the US, and on this island, people depend on their tap water, heavily. Apparently, collecting rainwater is big over there. Wish I could have access to them, but I find nothing on the US from them, let alone in this island.Īll the paints I found, even articles talking about safe paints for roofs, come from that area, AU and NZ(I think I saw one from the UK). In Australia Wattyl Kill Rust is suitable. John C Daley wrote:Make sure you buy a roof paint that specifically says its safe for potable water - Dulux, Wattyl etc do make them I honestly can’t say if this falls under the “organic or better policy” but as we are talking about paint, I don’t really know what is acceptable and what isn’t. Off hand, I would think that a polyurethane pant possibly is the best option as it tends to form a very hard, stable coating. I realize this is not the paint you were looking for, but painting rust is just about guaranteed to create little rust bubbles over time. The easiest to use source I have found is Gemplers rust converter (from ). ![]() I have done this on some metal odds and ends and the rust chemically turns to a hard black coating that positively resists further rusting and acts like a primer surface for painting. Option two might be to chemically treat the rust spots with a rust converter. Unfortunately this will also remove adjacent galvanized coating and make the underlying metal even more prone to rust. One option would be to get up with an angle grinder or wire brush and physically remove the rust. This might be a stretch, but if your roof is getting rusty, painting it will not stop the rust, but only slow it down. ![]()
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