Built-In Moisture Process in Structure with Damaged Waterproofing after the Application of Thermal Insulation Boards

Abstract

The article deals with energy rehabilitation of a building with damaged waterproofing of its lower structure. The reference construction is made of fired bricks, whose functional properties are perfectly fine, but the thermal insulation properties are insufficient for this time. The most common solution of such a problem is the application of a thermal insulating material based on expanded polystyrene on the building envelope. Unfortunately, these solutions often entail the risk of moisture problems in places that appeared to be dry before. The article compares the current solution with the new one relying on material based on calcium silicate [4] with high moisture transport capabilities as an alternative insulation of these buildings.

Numerical moisture simulation of redeveloped structures using active materials based on cement composite

“…Contrary to simulation, the most significant amount of condensate was formed in the original state, i.e. only after the treatment of window reveal by means of cement‐lime plaster .…”

“…Contrary to simulation, the most significant amount of condensate was formed in the original state, i.e. only after the treatment of window reveal by means of cementlime plaster [9,10]. The lowest amount of condensate formed, as expected, after the application of thermal insulation boards made according to recipe 1.…”

“…3. It was expected the least favourable outcome in case of this technical measure, just like in case of simulation which evaluated the critical detail of moisture-laden wall footing [9,10]. Contrary to simulation, the most significant amount of condensate was formed in the original state, i.e.…”

Energy Remediation Combining Insulation Materials Based on Calcium Silicate and Expanded Polymers

“…A legitimate concern resulting from the emergence of these moisture problems is based on situations, where the footing of the foundation structure is exposed to increased moisture caused by malfunctioning waterproofing layer of the substructure. This issue is described in more detailed manner in articles [1,2,3]. In the pursuit of functional design of outdoor thermal insulation, it is necessary to take into account not only the requirements of the thermal technical standards, but also the current actual moisture condition of the structure.…”

“…In the pursuit of functional design of outdoor thermal insulation, it is necessary to take into account not only the requirements of the thermal technical standards, but also the current actual moisture condition of the structure. The possible functional designs and other energy rehabilitation options are described in Articles [1,2,3,4,6,7]. These professional publications deal with the development of materials based on calcium silicate and aluminosilicate, as well as the suitability of the utilization of these materials for energy rehabilitation of buildings.…”