Sikkens Proluxe Cetol 1 RE is a premium, translucent, exterior wood base coat to be used with Sikkens Proluxe Cetol 23 RE Plus. Its superior oil alkyd formulation offers excellent penetration and adhesion to vertical wood surfaces. Sikkens Proluxe Cetol 1 RE offers superior UV protection, and is highly transparent, water repellent, weather resistant, flexible, and breathable. When used as a system, this product provides a durable, rich film that will protect from harmful UV rays and minimize peeling and blistering. The inclusion of translucent iron oxide pigments and UV absorbers gives excellent UV protection and color retention.