General Finishes’ Exterior 450 Wood Stains are premium quality, exterior pigmented stains designed for outdoor projects. They contain U.V. absorbers and mildewcides for maximum protection from the elements. Exterior 450 Stains can be applied by brush, roll or spray. You have two options: Apply two coats Exterior 450 Wood Stain with no topcoat for a semi-transparent look or apply one coat of stain, wipe off and apply several coats of Exterior 450 Clear Finish. Warning: We do not recommend Ext 450 stains or topcoats for exotic woods Ipe, teak, or other dense oily woods that will get exposure.