False ceilings typically last for many years, usually around 10 to 20 years or even more, depending on various factors like the quality of materials used, installation technique, and maintenance. Proper care and occasional inspections can prolong their lifespan. However, eventual wear and tear or changes in environmental conditions may require repairs or replacements. It’s advisable to consult with professionals for guidance on maintaining the longevity of your false ceiling and addressing any concerns promptly.