Our coatings are widely applicable to a variety of surfaces, including walls (such as concrete walls, brick walls, gypsum board walls, etc.), wooden objects (such as furniture, doors and windows, etc.), and metals (such as wrought iron railings, aluminum alloy window frames, etc.). However, when using on different surfaces, some pretreatment may be required. For example, rust removal and cleaning are necessary before using on metal surfaces, and the wooden surfaces need to be sanded smooth to ensure the adhesion and effect of the coatings. Specific application instructions can be viewed on the product details page or in the construction guide.