c. 1930s Home Gets Plaster/Trim Repairs August 24, 2015 / Administrator / Interior Extension jambs and base coat of plaster (brand Struct-o-Lite). Vinyl windows were previously installed by another contractor. The wallpaper in all the rooms had to be removed first. Finished product. Water-based Liquid Nails used to re-adhere plaster to lath where keys are broken. You can see the two different layers of plaster- the thicker, gray base layer and the thinner, white finish layer. The old corner blocks are still in stock. Amber shellac and lacquer for a finish.