Today I finished building a kit of a barn for the farm on Hadarford. The roof was the final item to be glued in place, and the roof, walls and doors were weathered.
Probably not needed, but I do like to put additional bracing inside kits I build just to reduce any bowing of walls and to keep the corners at right-angles. My experience of constructing buildings is that the thin walls tend to bow very easily, especially the bigger the building. It is always handy when kit manufacturers supply the kits with the parts still attached to their moulding spurs, which is what I used for the bracing for this model. I also added corner braces mad from other scrap plastic parts. I used the new tools I recently bought to hold pieces of wall together at right-angles to form corners.
They certainly work well and definitely makes construction a lot easier.