I think it's a little pricey if I remember correctly, but it looks really nice. There's a multi-step painting process by modern masters called metal effects that can be used on exterior metal roofing. I want to duplicate the appearance of that weathered material and need to find out if there is a user-friendly product that can be applied to new galvanized corrugated steel that will make it look rusty in a matter of days or weeks. Corrugated steel roofing and siding was commonly used in this district from the 1880's to the 1940's. I am a retired architect designing a new house for myself in the historic preservation district of this old mining community. My name is Romualdo de Blas and I live in Bisbee, Arizona. Surely there is a process, and one can purchase the pieces in the steps.
The only thing I can find to "age" them is in a kit. Just had galvanized awnings added to my homes exterior by a handyman. I do not want the roofing to rust, I just want to reduce the glare. I would like to find out if there is a way to treat corrugated galvanized roofing to reduce the glare or solar reflectance to a dull finish. So I thought I could distress it myself, a friend said to use swimming pool acid. I've been trying to find some that's old and dull/slightly rusty, but no luck. I want to do a project around home using galvanized steel. I might add that I am about to try out in the laboratory, some of the formulations in the textbook by Wernick and Pinner, The Surface Treatment and Finishing of Aluminum and Its Alloys. The solution applied should not be too toxic or dangerous to the environment or to the applicator. Application should be as for paints - by roller, brush or spray. What I have in mind is a conversion coating, e.g., an oxide that can form at ambient temperature on the installed roof. I have been asked to try to find a means of dulling the surface of an installed mill-finish aluminum roof on a house - the neighbours are complaining of the glare from sunlight. "Surface Treatment & Finishing of Aluminium and Its Alloys" Just be careful where you wash the salt off to, it will kill your plants. Set the tin on your drive way, pour on a vinegar & salt & let it set. I have never used any acid that would be harmful should my grandkids be around while I have worked on tin in the past. Have used vinegar, bleach, strong salt solution, the main thing is you need "acid". Please see the entry of Decemand don't even consider hydrofluoric acid.Ī. note: Thanks Craig, but hydrofluoric acid has no role in this at all and is the most dangerous material you can imagine. I would suggest testing of several solutions before trying on your project.Įd. I have heard that Hydrofluoric Acid may be used but be very careful with this extremely dangerous acid. I have done a few Mexican restaurants that have this look, the electrical conduit was washed with sulphuric acid/water solution and I think the tin roofing was washed with the same. Someone working with such roofing may give you an estimate of how long nature will take to give about the same finish. Your call, and this will take a lot of labor, I'm sure. It is not expected that the slurry will pick up any appreciable zinc off the sheet surface, but thinking environmentally, it might be best to arrange to rinse the slurry off the roof and collect it for proper disposal.
Using a very fine - grade FFF pumice, should result in a pewter-like finish. Used with tampico brushes, to mechanically polish down the shine of zinc and other hot dip coatings (during the sheeting manufacture, not after installation).
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