Thermal Performance of CSEBS Residential Buildings in Lagos State

Purpose: This study empirically investigates the thermal performance of residential buildings constructed with Compressed Stabilized Earth Blocks (CSEBs) in Lagos State, Nigeria, to determine occupant thermal perception and to evaluate the material’s benefits relative to conventional masonry in a hot–humid tropical context. Methodology: A descriptive design was adopted. Primary data were collected from residents of Amen Estate, Ibeju-Lekki, using a structured questionnaire (n = 221; stratified random sampling) complemented by observational visits and on-site atmospheric measurements. Quantitative data were analyzed with SPSS v26 and Excel using descriptive statistics to summarize thermal sensation and perceived benefits; contextual interpretation was informed by relevant thermal comfort standards (ASHRAE 55, ISO 7730) and literature on earth-based materials. Findings: The results indicate overwhelmingly positive thermal performance for CSEB buildings: 96% of respondents reported satisfactory indoor thermal conditions, and large majorities endorsed CSEBs as low-embodied-energy (73% agreement), durable (95%), environmentally sustainable (94%), cost-effective (94%), and aesthetically pleasing (91%). These perceptions align with CSEBs’ high heat capacity and thermal inertia, which moderate diurnal temperature swings in the tropical monsoon climate of Ibeju-Lekki. Originality: By providing an evidence-based assessment from a contemporary Nigerian estate, this paper strengthens empirical support for CSEBs as a viable, low-carbon alternative to concrete masonry in hot-humid regions, and it offers actionable recommendations for location-appropriate deployment and further material optimization.