Machine Shop Era & Roof Color?

I have an old AHM # 5839 minikit Machine Shop I wish to weather.

I am trying to figure out the era of this brick Machine Shop, ('30’s, '40’s??), & what the flattish roof with skylight windows would have been made of - the plastic kit has molded plates or sheets representing??

Also wondering what the roof’s original color would have been & what colors they weather out to?

Thanks

Tanked

Without seeing the roof details I’m not certain what it’s supposed to be. If it is flat I would assume it’s representing a hot tar sealed roof ? Flat black /with some lighter chalks should be a safe bet. You can also try covering the roof with 600 grit w/d sandpaper & weather to Your liking. This gives the flat roofs more realistic character in my op.

I think I will post a picture tonight.

It is not ‘dead flat’ , so its not a ‘1 run’ bitumen set up, i think.

It is molded in a dark silver/gray with a definite repeat pattern that has a slightly raised edge all around each ‘tile’, but what I am scratching my head over is it looks like it is made up of plates or ‘shingles’.

Whereas a cedar shingle might be roughly a foot by a foot, these ‘plates’, look to be about a scale 4 feet by 4 feet each.

Tanked

ok, here is a picture.

Any thoughts now?

Tanked

Weathered Black.

Thanks Roger. Do you think the roof is wood or bitumin over wood or metal? Tanked

Bitumen over wood or metal.

In other words tar over wood.