The roof has been airbrushed with a mixture of Railmatch Weathered Black and Roof Dirt to represent a well-used example. Care was taken to avoid paintless shadows behind the torpedo vents by painting those areas first. Only once the vents and surrounding roof were painted did the process move on to the remainder of the roof.

If airbrushing the roof of a ready-to-run coach, when the roof is not easily removed, a card mask can be used to protect the sides from overspray while this is being done. Masking tape could be used, but I find that a piece of card does the job just as well when weathering. It's a different matter if you're airbrushing the main colour in the first place.

It's a pity I didn't put the roof back on properly before taking the photograph . . . . . .