Great help! Thankyou all very much. I'll check out the links.
Howdy Dave;
In pre 60’s or so times boxcar roofs were often painted over the galvanized steel. As the car aged splotches of paint would peel or flake off leaving grayed galvanizing showing. Later roofs were unpainted galvanized steel; however there was often overspray around the roof edges.
Have fun, Rob
If you want to replicate the straight weathered galvanized metal, just look at guard rail to light poles, these are all delivered as shiny galvanized metal, and quickly oxidize to a grayish color.
Rick
Rule 1: This is my railroad.
Rule 2: I make the rules.
Rule 3: Illuminating discussion of prototype history, equipment and operating practices is always welcome, but in the event of visitor-perceived anacronisms, detail descrepancies or operating errors, consult RULE 1!
Dave-the-Train: There's a number of good photo gallery sites out there. Try browsing them for boxcar pics and find shots that show the roof of the car.
http://railcarphotos.com
http://rr-fallenflags.org
http://canadianfreightcargallery.ca / http://freight.railfan.ca
http://rrpicturearchives.net
http://www.niagararails.com/railcars.shtml
Chris van der Heide
My Algoma Central Railway Modeling Blog
What I have observed is the roofs get scraped or the gavinized coating wears down allowing rust to form. Or chemicals, powders and dirt accumulate to discolor or rust the roof. It is generally a spotty rust or part of panels. If that is not the case, the galvinizing takes on a patina. Yours, The Ferrequinologist
The Ferroequinologist layoutconcepts@yahoo.com eBay store: Backshop Train & China Store Facebook: Model Trains, Train Sets, Buildings & Layout Concepts
markpierce A thin wash of 70% alcohol and a bit of acrylic burnt sienna (rust colored) and/or black or burnt umber (dirt colored) should do the trick. Apply with a brush. Mark
A thin wash of 70% alcohol and a bit of acrylic burnt sienna (rust colored) and/or black or burnt umber (dirt colored) should do the trick. Apply with a brush.
Mark
These colour will work well for your project. Also try an aluminum color on the roof to simulate the effects of the elements on the galvenized roof.
Freelancer with an interest in N&W, SCL, and other 70s railroads
It drives me nuts to ask this...
I'm doing some weathering - mostly trying to keep it minimal or less - and the thing I can't figure is what to do about the extra shiny "out of the packet" silver roofs on a whole variety of makers cars.
I assume that roofs that aren't painted a colour are galvanised and would therefore be pretty shiny when new... but what happens next please?
Okay there will be atmospheric crud, stuff dropped on them and, eventually, rust patches... there may also be exhaust mess if they run next to a smoking loco... That all applies to any roof I figure...
But what about that galvanising... surely it must fade... mustn't it? A galvanised bucket never stays shiny for long... they got various shades of grey... Do the boxcar roofs do the same thing please?
Which natuarlly leads to the question of whether people just dull down car roofs or do they completely over-paint them?
Thanks