EZ Prime 6149 should be used as a base coat whenever the surface to be painted is aged, cracked, checked, pitted, or in any way less than smooth. It can be applied to fiberglass, wood and previously painted surfaces. EZ Prime 6149 dries quickly and is easy to sand. This high-build formula has excellent filling properties which can be used for a full, one-coat application. When using on bare wood, seal with 2018 Clear Wood Sealer to provide water resistance and dry rot protection. Not for use below the waterline. Apply any Pettit, Z*Spar or Shipendec enamel as a topcoat. When using on bare wood, seal with 2018 Clear Wood Sealer to provide water resistance and dry rot protection. Use 120 Thinner for brushing, rolling or clean-up. Use 121 Thinner for spraying.