Knowledge, carefully planned details and quality implementation are the most important factors that ensure that a lowenergy or passive house will meet all your needs for pleasant, healthy, comfortable and economical living. Rihter houses are made with quality that you can see for yourself, since we carefully plan the construction right in your presence and diligently implement it. After the construction is over, we use various measurements to check the quality of the built house. Among these measurements are also airtightness and the thermography of the external envelope of the building.
Airtightness is one of the most important conditions of the external envelop of each modern house, especially if the house was build according to the standard of a low energy and passive construction. Poor airtightness of the external envelop is reflected in two ways. First as the failure to meet the above mentioned standards of economical construction, which results in higher energy consumption. The second, a more concealed issue, is condensation in the house structure, which in many cases is not immediately apparent but in the long term can cause irreparable damage to the building. Good airtightness is thus a necessity and a standard without which there is no low-energy and passive construction. Passive houses must have the measured tightness of n50 ≤ 0.6 h-1. For good low-energy houses, the recommended airtightness is n50 ≤ 1.0 h-1. The n50 = 1.0 h-1 exchange means that air at 50 Pa pressure in the house would exchange in one hour. Rihter guarantees the suitable airtightness of your house upon signing the contract. This will also be demonstrated to you before completing the construction with the airtightness test or the Blower-door test. The airtightness test is performed with a special measuring device that is made of a fan and a measuring device. The fan helps create overpressure and pressure depressions in the building according to the prescribed measuring standard. At set up parameters, the device simultaneously calculates the tightness of the external envelope of the building. The airtightness test is performed during the construction phase after implementing the installation, when all the breaches of the external envelope are finished and when the corrections to any eventual poorly sealed points are still possible. Poorly sealed points are discovered with smoke and a very exact air flow measuring device.
The thermographic analysis is an indispensable method when performing energy surveys of buildings. With its help, it is possible to check the thermal bridges in the building, the irregularities in the in-built insulation materials and the correct installation of builder’s joinery. All these factors can affect the poor insulation of the external envelope, which results in energy loss, local condensation and subsequently mould. We at Rihter are aware of the issue of thermal bridges and have therefore solved all the details of the critical points where these thermal bridges can occur. This is attested to by a certificate for the Rihter Pasiv system from the renowned professional institution the Passivhaus Institut from Darmstadt. We will be glad to perform a thermographic analysis and an airtightness test of your building. This way you yourself can make sure of our professional qualification and the quality of our construction of low-energy and passive houses