Decorative plaster mouldings are known for their durability and longevity. When properly installed and maintained, they can withstand the test of time. Regular cleaning with a soft, dry cloth is usually sufficient to remove dust and maintain their appearance. In the case of minor damages, repairs can be carried out by skilled craftsmen. However, it's essential to follow proper installation guidelines and ensure that the plaster is applied to a stable surface. Additionally, protective measures should be taken during painting or renovation projects to prevent accidental damage to the mouldings.