Do not apply clear topcoats over bright white paint, as yellowing may occur due to a reaction to the substrate. Light color paints may also experience yellowing due to topcoat application, but it will less noticeable
Water based formula can be brushed, sprayed or rolled; soap and water cleanup
Exterior 450 Topcoat is enhanced with UV absorbers to maintain and safeguard the quality of the finish, although it won't stop the wood from altering its color due to sun exposure.