What is the difference between polyurethane, water-based, and tung oil finishes?
Polyurethane finishes are tough, oil-based finishes that create a hard, durable coating atop the wood. They are known for their excellent durability and stain resistance, as well as a rich look. Polyurethane finishes are available in three sheens. Note that polyurethane, according to the Dura Seal brands Web site, will have an ambering effect when applied over light-colored surfaces, and should not be applied to floors previously finished with wax, shellac, lacquer, or stains containing wax or stearates. Three coats is standard procedure. These finishes take approximately eight hours to dry, but should not be walked on until the following day. You should wait 48 hours before you replace any furniture or rugs. Please allow for longer drying periods if there is high humidity, low temperatures, or minimal airflow.
