37º IAHS World Congress on Housing: - Universidad de Cantabria

XXXVII <strong>IAHS</strong><strong>World</strong> <strong>Congress</strong> on HousingOctober 26 – 29, 2010, Santander, SpainCODE: 614VENEERS: HOW TO MINIMIZE BIOCOLONIZATIONLESIONSLópez Rivadulla. FJ 1 , Alonso Alonso. P 1 , Fernández Madrid. J 21 Department of Building ConstructionUniversity of Alicante, Spain.E-mail: javier.rivadulla@ua.es; patricia.alonso@ua.es2 Department of Building ConstructionUniversity of La Coruña, Spain.E-mail: jfmadrid@udc.esAbstractThe rain screen walls with stone veneers - a constructive system of recent use - has-been amajor advance in the construction world. However, with the use of granite slabs in this typeof façades, biological colonization have appeared that undermine the confidence of users andprescribers. Some of the related problems are the appearances of stains and soiling producedby living organisms called biotic agents, bacteria, cyanobacteria, fungi, algae, lichens, etc.Provided that there are no studies on biological damage in rain screen walls with stoneveneers, a research project has-been developed to analyze a series of buildings in Galicia thatpresented these injuries.Obtained results in this research allow defining relevant factors that intervene on thebiological colonization and that are of the interest for all the architectural community linkedto pathology.37º <strong>IAHS</strong> <strong>World</strong> <strong>Congress</strong> On Housing Science 243