The paper is focused on hygrothermal performance of light pipes used in Kaprálův mlýn center. It is present an analysis the condensation risk in roof dome of light pipe and on surface of double insulated glass in cool part of light pipe. Insulated glazing is integrated to thermal insulation block made of extruded polystyrol.

This paper deals with the time period of condensation on the inner surface during the day and the severity of this phenomenon. Condensation on the surface structure occurs when the surface is cooled to or below the dew point temperature, which is a function of temperature, relative humidity and atmospheric pressure.

Using the test and design standards helps to obtain a lot of information and experience in determining the thermal values of window, door structures, skylights and their components. We offer knowledge of laboratory practice.

The current trend in the use of secondary raw materials, constantly growing demands to reduce the overall energy performance of buildings and the elimination of thermal bridges both in the design phase and in the implementation phase, helps solve a new element of the threshold coupling, combining the above mentioned requirements for construction. The threshold coupling is inserted in the form of plates under the frame fills of building hole which borders between the exterior and interior of the building. The variability is in the possibility of height and longitudinal adjustment to the exact size and greater range of boards with several kinds of geometrical modifications allowing waterproof closing of waterproofing made of the commonly used materials.

This year there has been a change in the assessment of the conformity of construction products. From July 1^st 2013 the REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL No 305/2011 (issued on March 9^th 2011) laying down harmonized conditions for the marketing of construction products and repealing Council Directive 89/106/EEC will come into full force. What will be the benefit for manufacturers?

It has been one year and a half since Technical Standards Information TNI 74 6077 – The windows and external doors – Requirements for incorporation has been published. What is the consistency or inconsistency between the demands on windows and doors manufacturing, their installation and actually reached geometrical tolerances of building construction? What this state brings to manufacturers of windows and doors, what to building contractor and what to customers? The view through the eyes of quality control.

In connection with the implementation of the revised European Directive 2010/31/EU on the energy performance of buildings, certain legislative provisions such as Decree No. 148/2007, Coll. Replaced by Decree No. 78/2013, Coll. are currently amending. This article is focused on the changes associated with the energy certification of buildings, the "ENB", from the perspective of changes in the evaluation ENB.

This paper examines the occurrence of extreme boundary conditions in the internal microclimate in the context of the intended use and structural design and technical equipment of the building. It refers to the occurrence of extreme conditions of the internal microclimate and the effects on constructions of buildings.

This paper deals with the classification of test properties of windows and entrance doors in terms of usability for practical use. Those classification classes are very important for the use of acquired functional properties of hole filling for use of the products in the country. Based on the above, it is then possible to determine the specific levels of performance that should be achieved by a product to demonstrate suitability. In summary, attention is also focused on technical thermal and acoustic properties of hole filling in terms of usability for additional practice.

The CE mark indicates only that the specified product properties were tested in accordance with specified regulation, in the case of windows, the type test was performed for 1 pcs of the product. Subject to the same quality parameters, ie same values ​​of air permeability, watertightness, etc. for the entire manufacturing production is the only producer responsibility.

This article is focused on issues that owners of wooden doors and windows may deal with: product surface maintenance. In the beginning the author presents and compares pros and cons of two popular types of products (made of wood and PVC) in terms of surface service requirements. Then a precise analysis of common types of damages caused by ageing or insufficient maintenance follows. The next part includes a case study focused on step-by-step described process of professional wooden windows surface restoration. Finally, the author summarizes and concludes by proving that concerns about too demanding maintenance of wooden products should not be considered as the main criterion when considering a purchase of wooden or PVC windows.

Determination of the energy balance of required building is necessary in energy evaluation, energy audit and energy performance certification of buildings. Key values are heat gains and losses. They are initial for determination of the energy demand and consumption. Calculation of the energy performance should be done in accordance to ČSN EN ISO 13790 standard. This article describes the problematic calculation of glazing solar gains. In the end is enumeration of different methods (current and older) during the heating season.

The paper describes existing databases of environmental data of building products with focus on Czech tool Envimat.cz. It is an online tool, which provides environmental indicators of building materials with main purpose of providing a unified, transparent and reliable system that allows user to compare different products and structures; motivate the producers to fill in data sets of their products and improve their technologies; convince architects and designers to care about different sustainability profiles of materials; give advantage to products that have lower environmental impacts being at the same technical level than the competitor. The implementation of Envimat is divided into the three main phases: start-up phase (data from the generic database); transitional phase (combination of generic and localized data); regular operation with fully localized data.

Measurement of natural lighting should be performed in a dark surrounding terrain. In light terrain (landscape covered with snow) only for completion. With regard to the brightness of the sky, its stability and colour of sky, it should be performed at the time around noon. It shouldn't rain or be fog. Disadvantage is requirement of uniformly overcast sky, because it happens only few times a year.

This paper describes the design of the new windows of the building of the National Museum in Prague and its heat-technical assessment.

This paper describes the construction of window for passive houses, from the perspective of current status and vision for the future. Describes the design of windows for passive houses, certified by PHI in germany. Also shows the future design of windows for passive houses, where the window frame overlaps the edge of window glazing.

This is a highly relevant article dealing with the comparison of two types ventilation - Natural ventilation through windows and controlled mechanical ventilation. The issue of ventilation in renovated homes in our country is still relevant. This paper describes a broad-based experiment measuring the intensity and quality of ventilation in two almost identical apartment houses. The conclusion confirms the well-known experience that controlled ventilation provides both - improved indoor air quality and the energy savings.

Inadequate ventilation is risky in connection with the pollutants indoors as there is no other way to dilute them. Indoors sources can produce allergens ( pets, house dust mites), toxic compounds like toluene or carbon monoxide, carcinogenic substances (e.g. benzene, formaldehyde etc.) and also such environment is ideal for spreading of infectious agents from the human sources (e.g. pandemic flu) or from the ventilation system (e.g. Legionella). Adequate ventilation is mostly the only way to improve the indoor environment and decrease health risks.