Re: C&S Outside Metal Roofs -- Painting and Weathering Models

Posted by Pat Student on Jun 14, 2020; 2:50pm
URL: http://c-sng-discussion-forum.254.s1.nabble.com/C-S-Outside-Metal-Roofs-Painting-and-Weathering-Models-tp15730p15734.html

Jim

A couple thoughts.

Paint on galvanized metal.  Some 30 years ago I painted al lot of the galvanized flashing on my house.  An old time painter told me that I had to clean it first to remove oil from manufacturing and use a coating that looked like contact cement, but without the "tack" before painting. When it was taken off last December, most of the paint was gone and rust was beginning to show.

I just removed a couple hundred galvanized screws from a wooden sidewalk that are installed some 20 years ago.  Almost all the zinc was gone and the rust appears to be the same color as the roof in the RGS train. My first reaction to the photo was that the panels had "rusted", about what I would expect after nearly 50 years.

Pat