Cloth weight threshold for unlined coat

[kolecho]

Alden recently posted pictures of his gorgeous unlined Minnis fresco jacket.

http://thelondonlounge.net/gl/forum/vie ... php?t=6248

In Alden's unlined coat, the canvass is covered with self material. Is it practical for this treatment to be used for heavier cloths, say 13oz-15oz range?

[Guest]

I saw a completely unlined coat - I say completely, including sleeves front and back - made with a heavy and thick thornproof tweed.

Not something I would do, but It can be made.

[kolecho]

Was it self-lined on the inside to cover the canvass?

[Guest]

Yes.

[uppercase]

14 ozs. for unpadded.

[DD MacDonald]

Uppercase, your 14 oz threshold for unlined, is this for reasons of structure and drape?

DDM

[Guest]

I think uppercase means that more 14oz has no reason to be. It would be just a matter of showing off technique and art.

I agree.

[the tailor]

There is no restriction to cloth weight for leaving a jacket unlined.
Why would there be?