Rosita Norvaišienė

• PhD
• Researcher at Kaunas University of Technology

The article presents an analysis of changes in energy efficiency of new office buildings designed and constructed during the implementation period of the Energy Performance of Buildings Directive (2014–2024). Common criteria on energy efficiency were collected from Energy Performance Certificates (EPCs) and processed. The changes in final and prima...

The article outlines an innovative approach by schools of architecture and civil engineering to educate professionals skilled in hybrid timber building construction and design, thereby filling the educational gap in the area of timber construction. To answer the question of what student competencies should be developed in the design and constructio...

One of priorities of the EU’s climate change policy is the energy performance of buildings. This is reflected primarily through the series of Directives the EU has enacted along the years, but is most precisely conveyed in the Energy Performance of Buildings Directive (EPBD). As part of the European Union, Lithuania has enacted its own long-term st...

Currently, the optimization of thermal energy consumption in buildings is considered a suitable alternative in the construction of new buildings, as a result of which the overall energy efficiency of the building increases. Thus, this study examined the efficiency and efficacy of different building renovation packages conducted across several build...

One of priorities of the EU's climate change policy is the energy performance of buildings. This is reflected primarily through the series of Directives the EU has enacted along the years, but is most precisely conveyed in the Energy Performance of Buildings Directive (EPBD). As part of the European Union, Lithuania has enacted its own long-term st...

As per general provisions of European Directive 2010/31/EU on the energy efficiency of buildings (recast), the Lithuanian government transposed the Directive into Lithuanian national law. In the process, the Lithuanian government prepared strategic documents in the field of energy performance and renewable energy that were integrated together throu...

The article presents the results of a set of hygrothermal experiments of an external wall insulated with an ETICS. As an add-on to previous studies, thermal insulation in the form of polystyrene with an additional horizontal strip of mineral wool was used. Laboratory tests were carried out in accordance with ETAG 004. The ETICS test rig was compose...

This paper investigates the mechanical resistance of ETICS, with different types of thin-layer rendering, by means of hard body and point load impacts on such surfaces. Core materials, made of different thicknesses of EPS (expanded polystyrene) were also tested for their resilience to such loads, as well as the elasticity of widely-used applied ren...

This paper is the research output of the laboratory ageing of external thermal insulation composite systems (ETICS). This was carried out in order to study the changes in properties of systems consisting of combustible and non-combustible thermal insulation materials, and four different types of finishing renders. Four types of the widely used, thi...

Energy performance certificates (EPC) are obligatory for new and existing buildings in all European Union (EU) Member states, and provide not only the characteristics of individual buildings but are also useful for energy management and planning. However, despite the current widespread of EPC analyses in other European countries, the information of...

Construction sector accounts for 40 % of the total energy consumption in Europe and produce about 35 % of all greenhouse gas emissions. Residential buildings that represent almost 66 % of the energy consumption and more than 64 % of the emissions of the total building construction sector are the vast majority of the building sector and play a signi...

Given the fact that the solar industry is relatively mature, and the costs of equipment are stabilized, the utilization of solar thermal equipment in reducing the energy consumption in buildings increased. For this reason, in the frame of the present work, a new flat plate solar collector (H2OSS®) and a new solar air collector (Volet'air®) with hig...

This article represents the result of experimental research on transient heat transfer in a multilayered (heterogeneous) wall. Our non-steady thermal transmission simulation is based on a finite-difference calculation method. The value of a Fourier number shows the similarity of thermal variation in conditional layers of an enclosure. Most scientis...

Installations using solar energy have negative visual impact and this discourages some potential users. The aesthetic of solar thermal collectors can be an obstacle to their development and limits the growth of the market. The integration of solar collectors in buildings allows to make them invisible from the ground. In France, the law remains rigi...

Energy use in buildings represents 40% of the total primary energy used in EU and therefore developing effective energy alternatives is imperative. Solar Energy Systems (STS) will have a main role to play as they they contribute directly to heating and cooling of buildings and the provision of domestic hot water. STS are typically mounted on buildi...

In a privatized global marketplace, innovation is a key driver of sustainable development and national competitiveness. Here we report on an innovative new fully building-integrated thermal solar panel concept that is patented and currently being readied for commercialization. The paper outlines the French regulatory landscape governing the deploym...

The Energy Performance of Building Directive (EPBD) (Directive 2010/31/EU, 2010) is the main EU policy instrument to improve the energy performance of building. Energy efficiency improvement becomes the main goal in Europe. The Directive 2002/91/CE introduced an energy policy tool - the Energy Performance Certificate (EPC). The implementation of EP...

The paper proposes the durability prediction method for ETICS, which could be applied in cold and wet climate regions. This improved method is based on the international and nowadays applicable standards for systems service life assessment (ETAG 004, ISO 15462), and completes them with other necessary impact criteria. This study examines the main c...

The purpose of this research is to determine the actual effective thermal capacitance of the building envelope in respect of the place of thermal layer in the enclosure. The actual effective thermal capacitance of the building envelope is estimated by calculating the thermal capacitance of building enclosure layers in order to find out the active t...

This paper provides initial results from experimental work on the durability of external thermal insulation composite system (ETICS). In order to predict service life of ETICS, the accelerated climatic cycle was composed on the basis of earlier scientific research and the statistic data of the Lithuanian climate. The research aims to assess the dur...

The paper proposes the durability prediction method for ETICS, which could be applied in cold and wet climate regions. This improved method is based on the international and nowadays applicable standards for systems service life assessment (ETAG 004, ISO 15462), and completes them with other necessary impact criteria. This study examines the main c...

The aim of the research was to evaluate an influence of floating floor construction specimen size on weighted reduction in impact sound pressure level ΔLW. The large size (area ≥ 10 m2) specimens should be used according to LST EN ISO 10140 series standards. The problem is that produce large specimens is expensive and time-consuming process. So mor...

The paper offers a detailed description of the improved accelerated weathering test for a mild climate zone. Experiments have been carried out to improve the test methods of facade paint durability investigation by including the impact of air pollution. A painted rendering with the roughened surface was the principal test material. The test results...

This paper presents the research of the impact of acidic precipitation on painted building facades’ rendering. Four typical kinds of the building facade paints have been chosen. The moisturing–drying cycling laboratory tests simulating acidic atmospheric precipitations and also natural weathering in the field have been carried out.A significant eff...

The essential function of exterior walls is to provide a continuous barrier to the exterior environmental conditions. The decay of the building facades is accelerated by atmospheric pollution and acidic precipitation. For determining of the impact of atmospheric pollution on the building facade face materials, the tests examining the impact of the...

The essential function of exterior walls is to provide a continuous barrier to the exterior environmental conditions. The decay of the building facades is accelerated by atmospheric pollution and acidic precipitation. For determining of the impact of atmospheric pollution on the building facade face materials, the tests examining the impact of the...

The paper provides the basic characterization of the principal agents that affect the durability of building materials and the description of the degradation mechanisms. The degradation factors are classified according to their nature (mechanical, electromagnetic, thermal, chemical and biological agents) as well as to their origin (atmosphere, grou...