LAUSR

Abstract Ceramic curved tile roofs (CCTR) have been used in Spain for ages. This roofing system is very common in Primary Healthcare Centres in Extremadura (Spain). The main objective of this research is to analyse the condition-based maintenance (CBM) of CCTR of Primary Healthcare buildings. Once the condition-based maintenance is analysed, the optimal maintenance policy and frequency is obtained. A sample of 20 Primary Healthcare Centres in Extremadura (Spain) were evaluated using Markov chains, which represent a useful technique to analyse the influence of frequency and the initial year of maintenance for the increase of the CCTR service life. This study found that the service life of the CCTR can be extended by 8 years using non-periodic condition-based maintenance with a high level of reliability. The end of the service life of this system was also calculated, with a maximum estimated replacement time of about 39 years. Therefore, the maintenance program can be monitored to optimize the operation costs.