Provide for good air circulation to prevent condensation under the plastic covering. Plywood, hardboard and particleboard all tend to absorb moisture through the ends and edges of the panel faster than through the surface. Allow at least two days for the water-repellent preservative or water repellent to dry before painting. If the panel faces are to be primed and painted, apply the same finish to the edges. Any edges which are cut during construction should also be sealed.
Ferrous nails can leave unsightly rust stains on plywood and other board products.
Use high quality galvanized nails on surfaces to be painted. Aluminum, stainless steel or high quality galvanized nails should be used if a water-repellent preservative, water repellent or semitransparent penetrating stain is to be used. Regardless of the type of finish used, the surface to which it is applied should be clean and dry. Do finishing work only in clear weather. Avoid applying finishes to exceedingly hot or cold surfaces.