| How do Architects and Designers Specify? AHE-JW-"Series"-"Code" Example: AHE-JW-Wabi-4 Preparation of Wall Foundation Surface Things to Make Sure Cement Surface is clean, dry and free of dust Gypsum Plaster / Board Surface is clean, dry and free of dust Plywood Quality of plywood is important. Apply primer or sealer to plywood to prevent lye and stains. Important to ensure that all blemishes and knotholes are fully penetrated and sealed. |