This is an HO scale (1/87th) unfinished building that is under construction, it is unfinished to show the structural lumber. If you print an additional roof joist unit, cut the perimeter border off and this will give you a nice stack of unused lumber.

If you would like to contact me directly: garylavart@yahoo.com. Please feel free to contact me if you would like me to design something custom for you, but please remember I will post it on Thingiverse for others to.enjoy too.