Altex Yacht & Boat Surfacer Undercoat is exclusively intended for usage above water.
It can be used in the following ways:
-In the Single Component topsides maritime paint system, as a surface and build coat.
-Directly applied as an adhesion/surfacing coat to adequately prepared fibre-glass gel-coat.
-Direct access to appropriately prepared and sealed lumber for cabin inside.
-After proper preparation, as a tie coat and improvement on existing sound enamel finishes
