Lacking the UV protection provided by copper, carbon-based preservative-treated wood used in many above-ground applications will require coating to meet consumer demand for weather resistance. While earlier metal-based preservatives were true solutions, many of the formulations of carbon-based preservatives rely on surfactants for solubility or dispersion in water. These surfactants can potentially react badly with the dispersion agents in the existing coatings on the market. The present work investigates the performance of six selected coatings on white spruce heartwood and ponderosa pine sapwood untreated and treated with one of three carbon-based preservatives. An earlier report described coating performance after 500 hours of artificial weathering (Stirling and Morris, 2010). The present report describes coating performance after 1000 hours of artificial weathering. The general ratings of the coatings on spruce were typically one to two points higher than those on pine indicating that spruce was a more stable substrate. Contrary to the initial concern, treatment with carbon-based preservatives was associated with coating performance under accelerated UV exposure similar to, or slightly better than, that on untreated wood.