key differences between Level 4 and Level 5 drywall finishes
1. Surface appearance and texture
Level 4: A Level 4 finish provides a smooth surface for flat paints, light textures and non-continuous textures. Imperfections may be visible under harsh lighting conditions. This finish is suitable for most residential and commercial spaces where the lighting is forgiving and less likely to highlight imperfections on a surface, such as ambient or indirect lighting.
Level 5: A Level 5 finish offers superior smoothness and texture quality, making it ideal for high-end applications and areas with critical lighting. The additional skim coat ensures a good appearance, essential for spaces with dark paint colors or significant natural light. Due to the directional nature of sunlight as it enters a space — and the harsh shadows and glare that accompany it — natural light can highlight imperfections on wall surfaces.
2. Application process
Level 4: The application of a Level 4 finish involves taping; applying joint compound over joints, angles, fasteners and accessories; and sanding to a smooth surface. The tools used typically include taping knives and sanders. The "field" of the gypsum board is left untouched in this level, creating a differentiation in the way paint will be accepted on the finished product. Level 5: Achieving a Level 5 finish requires an extra step: applying a skim coat over the entire surface to create an appearance that is free of imperfections.
