tetter's Duff Challange

[TinGoat]

Nicely done, but with all that framing you forgot something...

Since this is Canada, you might have considered adding insulation and a vapour barrier... Help to keep the train room and the rest of the house toasty warm.

Might not be too late, if you get a Spray Foam Kit. That stuff can be squirted into all sorts of tight nooks and crannies which means that you can get it done without having to move too much stuff out of the way...

Not to mention the Scenery making potential you could have with any left-over foam....