tPhase change materials are a promising strategy to reduce energy consumption in a wide range of appli-cations including the building sector. Many studies have been done to evaluate the impact of PCM onthermal properties of building materials, however there exists little information on the influence ofPCM on other properties of the support materials. This knowledge is necessary to determine the fea-sibility to apply and use building materials containing PCM. In this paper, the effect of the addition ofdifferent percentages of microencapsulated phase change material on the properties of two commercialsingle layer mortars has been studied. Physical and thermal properties as well as fire reaction have beenevaluated.

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