Natural Building Materials and Social Representations in Informal Settlements: How Perceptions of Bamboo Interfere with Sustainable, Affordable, and Quality Housing

Building with natural materials has proven to be a sustainable approach in addressing the needs of affordable and healthy housing and improving living conditions in informal settlements in an era of ecological transition. In view of this, the use of bamboo as a building material is considered a promising practice. However, although many traditional building techniques incorporate the use of bamboo, its application in contemporary informal settlements is disputed. This interdisciplinary study critically explores the social and cultural factors limiting the use of bamboo in a contemporary context by investigating housing perceptions and practices in an informal settlement in Colombia. Results show how the combined effect of cultural globalization, modernization, and the standardization of construction practices have marginalized and are now devaluing traditional knowledge on natural local building materials. Structured observations and in-depth interviews reveal that inhabitants’ refusal of the local bamboo building tradition, their representation of bamboo as an unsafe and temporary material, and their choices of less sustainable contemporary building materials, are better understood by situating these preferences within the complex system of the community’s imaginary. These social representations validate housing behaviors for their symbolic implications rather than for their actual consequences on livability, comfort, and overall dwelling quality. The study also discusses the limits of policies promoting natural building materials in housing when exclusively focusing on technical performance, while neglecting the prevailing impact of the cultural domain on housing preferences and behaviors.