How long does paint last on walls?

Interior paint typically lasts 5–10 years on walls under normal residential use, with higher-quality acrylic paints lasting toward the upper end of that range. Ceilings, which receive less physical contact, can go 10–15 years between repaints. Exterior paint has a shorter lifespan — typically 5–8 years — because it is exposed to UV radiation, temperature fluctuations, humidity, and dust. In Saudi Arabia's climate, exterior surfaces face intense UV exposure and summer temperatures above 45°C, which accelerates paint film degradation; using UV-resistant exterior formulations extends the effective lifespan significantly. Surface preparation is the single biggest factor in paint longevity: paint applied to a properly cleaned, primed, and dry surface lasts considerably longer than paint applied over dust, moisture, or a failing previous coat. High-traffic surfaces such as hallways, kitchen walls, and children's rooms age faster and typically require refreshing every 3–5 years.