Inter-laboratory variability results of porous building materials hygrothermal properties

Bearing this in mind this study is focused on the analysis and discussion of properties used in different models, its availability and reliability. Laboratory test results to determine some hygrothermal properties of two common materials in walls of historical buildings: a lime natural stone and a lime mortar were developed. Some of these tests were performed by two laboratories involved in a project and the main idea is to present and compare the obtained results also comparing with database values.