Are polyurethane trim and mouldings easy to install?
Most polyurethane trims and mouldings are installed by the homeowner. They may appear to be easy to install but they are not. Using corner and joiner blocks is highly recommended. Without the joining blocks, the do-it-yourself installer must manually sand the glue joints. Joiner blocks also hide any shrinkage of material that might occur. Even the slightest hairline opening in the trim will result in an unsightly gap in the trim. Polyurethane materials do have a tendency to shrink over time, depending on the manufacturer, the type of adhesive, and type of paint.
