Today’s passive house meets tomorrow’s energy efficiency requirements

Di Trade’s long-standing partner, IZOCAM, has once again proved that it is not only the undisputed leader in the production of stone and mineral wool insulation materials, but also a completely new take on building construction, namely passive housesThe name “passive” is due to the fact that the building does not need active heating and cooling systems. These buildings do not differ in any way from the others and any house already built can be converted into a passive house.

At the seminar organized by Di – Trade in Sofia Dr. Kemal Gani Bayraktar – Technical Marketing Manager of “IZOCAM” informed the partners and friends of the company present that it is possible to build or renovate a building with a high degree of residential comfort at extremely low energy consumption. Through its program : Saint-Gobain Multi- Comfort ( Izocam aims to minimize the impact on the environment , and focuses on the comfort and well-being of occupants : ( thermal and acoustic comfort, indoor air quality , safety … ) . Completed projects of this type of houses were presented – both renovated buildings and newly built residential and public buildings. The concept of a multi-comfort house allows great flexibility in the design of the interior and exterior, reduces the consumption of heat energy, and reduces CO2 emissions.

The construction of passive houses in Bulgaria is gaining momentum. The palpable energy crisis is an incentive for more and more consumers to become aware of the running costs of buildings and the need for radical energy efficiency measures.

Constructing a passive building is somewhat more expensive than standard construction, but in the long run such a building pays for the initial investment because it saves on energy to heat and cool it.

It is estimated that a passive house uses about 4 times less energy than a conventional house.

In order for a home or building to be passive, many rules and insulation requirements must be followed when constructing it. In practice, all elements of the building are insulated, as well as the connections between them. The windows must be triple-glazed and the middle glass is low-emissivity. Insulate walls, floors and ceilings. Most often, after the insulation is installed, the wall thickness reaches and exceeds 30 cm to meet the heat transfer standard of less than 0.15 W/m2. The doors are also well insulated and sealed on all sides.

For passive buildings, the annual heating, cooling and ventilation consumption shall not exceed a total of 15 kWh/m2 of living (habitable) area.

On the other hand, the sum of energy costs for heating, hot water and appliance operation should not exceed 120 kWh/m2 per year.

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