Western red cedar (<i>Thuja plicata</i>) boards were weathered outdoors for up to 16 weeks, painted with alkyd oil or acrylic latex primer paints and then tested in shear or tension to determine paint adhesion. The tensile strength of the paint/wood bond decreased 50% from 2068 kilopascals in wood weathered for 4 weeks to 1034 kilopascals in wood weathered for 16 weeks. Shear strength decreased 33% from 5171 kilopascals to 3447 kilopascals.