Single Sheathed vs. Double Sheathed


While wood sheathing is applied to the interior of steel cars, they are not referred to as “double sheathed”, even if they really are.
The early outside-steel sheathed cars in the 1910s and '20s were referred to as "double-sheathed" in the literature of the time. This can sometimes make it difficult to know if a given car had wood or steel exterior sheathing without some other context or knowledge.

It is worth noting that wood double-sheathed cars typically had interior sheathing from the floor to about halfway up the side. Above that was open framing.

David Thompson

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