I've had no major building projects this past winter but have had some repairs to make. My model of Niblock's Pork Store, whose prototype is a roadside landmark in Salem County here in South Jersey, is now three years old and the roof made of wet-dry sandpaper did not hold up in our local elements. I have replaced it with a Precision Products' shingle roof (made in plastic sheets) and painted it with exterior latex. It is held on with Loctite's Power Grab, a repositional high-tack building adhesive that you can get in caulking gun size in the big box builder stores. It was relatively inexpensive, easy to apply, does not have a nasty odor, and cleans up with water. I have high hope for it.
You'll note that the walls and windows of the building have become quite weathered in three years outdoors. I plan to keep it that way.
I would have posted more pictures -- I tried unsuccessfully several times -- but have found that the new software will not allow me to do so. I hope this can be resolved.