Why Wall Screeding is Essential Before Your Topcoat Paint
May 10, 2026 • BellonPaint Team
Screeding is the process of applying a thin, smooth layer of specialized putty (screeding putty) over plaster walls to create a flawless, flat substrate. Many homeowners skip this step, but professional painters know it is the key to a premium, long-lasting finish.
Unscreeded plaster walls have minor cracks, uneven pores, and rough textures. If you apply high-quality paint directly over them, the plaster will absorb the paint unevenly, resulting in patchiness and requiring extra coats. Screeding seals these pores, ensuring uniform topcoat absorption and color consistency.
Additionally, screeding putty fills hairline cracks and prevents them from showing through your final coat. It makes sanding easier, allowing you to achieve a glass-like flat wall. If you are investing in premium satin or gloss paints, screeding is absolutely mandatory to get the best return on your investment.