Internal wall insulation with a new aerogel panel: SLENTITE^®for energetic retrofit in historic buildings

Abstract

We present two recent test case application examples of a new high-performance insulation panel with product name SLENTITE® used as core element of a rendered internal wall insulation system. The first case study refers to the 18th-century building Alte Schäfflerei now the Fraunhofer Centre for Conservation and Energy Performance of Historic Buildings, at the monastery Benediktbeuern, southern Germany, where SLENTITE® was applied in 11/2017. The second test case was installed in 04/2019 in a heritage building situated in the historic center of Luxembourg. In Benediktbeuern, a single layer of insulation material was chosen, in Luxembourg we applied two layers of insulation. In both cases, detail work around the windows was a main task and we gained experience on product processing under real conditions. In terms of indoor room usage, the object in Benediktbeuern is used as exhibition hall with rare traffic and well controlled climate, whereas the object in Luxembourg is used as meeting room without climate control. Measured data of 20 months from the object in Benediktbeuern and first impressions of the performance in Luxembourg are discussed.

Advanced Carbon Reinforced Concrete Technologies for Façade Elements of Nearly Zero-Energy Buildings

“…Due to their special thermal insulation properties, they are currently among the most efficient insulation materials with the lowest thermal conductivities. Mostly, they are based on SiO 2 , which is processed from aqueous precursor solutions containing silicate by adding a base to increase the pHvalue [29]. Thus, a highly open-pored, porous SiO 2 structure is obtained after supercritical drying.…”

“…Thus, the convective part of the heat conduction can be excluded. Pure aerogels usually have a thermal conductivity between 12-20 mW/(m•K) and the air-filled pores make up to 99.8% of the volume [29]. In addition, SiO 2 aerogels are nonflammable and have low strengths.…”

“…The range of application has expanded, and new processing techniques have been developed. Among them are high-performance insulation materials to improve thermal conductivities such as vacuum insulation panels (VIP) [28] or aerogels [29,30]. However, with the increasing shortage of fossil materials and the growing sustainable awareness, substitutes need be found for market-dominating fossil insulation materials such as expanded polystyrene (EPS) or extruded polystyrene (XPS).…”

New Aerogel Products for Construction Use: Product Specifications, Application Examples, Practical Aspects

“…It can be applied where protected by a waterproofing layer or in vapor open construction variants. A detailed report on two field test cases where SLENTITE ® was applied as interior insulation in heritage buildings is given in our second paper [7].…”

Measurement of the Kinetics and Thermodynamics of the Thermal Degradation for a Flame Retardant Polyurethane-Based Aerogel

“…In this study, this methodology was applied to characterize the thermal decomposition of the flame retardant polyurethane aerogel (FR_PU_aerogel, SLENTITE ® , Osnabrück, Germany), a newly-developed high-performance insulating material by BASF (Aerogelit) [25,26]. To the best of our knowledge, the thermal degradation for the FR_PU_aerogel has not been studied yet.…”