The "Passivhaus"
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The "Passivhaus" Building with the technology of tomorrow

It should be noted that details, illustrations, general technical information and diagrams contained in this document are only general proposals and details which merely describe basic functions schematically. No precise dimensions are included. The applicator/customer is independently responsible for determining the suitability and completeness for the product in question. Neighbouring works are described only schematically. All specifi cations and information must be adjusted or agreed in the light of local conditions and do not constitute work, detail or assembly plans. The technical...

The best way to pay less for energy is to use less. Sto can play a decisive role. Nearly 90% of the energy we use comes from fossil fuels – and 40% of this energy is used for heating buildings. Private residence in Rosegg, A, Architect Dr. Gerhard Kopeinig (Dipl.-Ing.), Velden, A Energy is not limitless – and it is certainly not free! Anyone who has given thought to our environment knows this, but homeowners feel this particularly acutely at the end of the year, for this is when heating bills suddenly rise once again. People living in a "Passivhaus" do not need to worry about such things,...

It pays to construct a "Passivhaus". Maximum comfort – minimum consumption. The "Passivhaus" standard continues to gain ground – and not only for detached houses. Owners, planners and investors have also discovered the advantages of this sustainable construction method for multi-storey residential buildings, office complexes and industrial buildings: minimal energy costs coupled with maximised quality of life – and the extra costs are minimal. Nor should one forget the government subsidy programmes available which further reduce the expenditure required. No wonder that even those renovating...

Seeing red is expensive If heat is allowed to escape for no reason, the interior must be heated once again, and that is expensive. The "Passivhaus" guarantees optimum utilisation of heat in the winter and a cool ambient interior climate in summer. Low energy house vs. "Passivhaus" The avoidance of heat loss in a "Passivhaus" is primarily based on the following three factors: 1. An airtight building envelope 2. Optimal insulation 3. Avoidance of thermal bridging at all critical locations such as windows etc. Wall: 0.20-0.30 W/(m²K) Window: 1.2 W/(m²K) Floor slab: 0.30-0.35 W/(m²K) Wall: ≤...

There is no more intelligent way to build a house The standards for a "Passivhaus". In order for a "Passivhaus" to "work", it must comply with the following technical and planning specifications: a building envelope which is completely airtight; a ventilation system with an efficient heat recovery system; optimised thermal insulation; avoidance of thermal bridging throughout, and triple-glazed windows with highly insulated frames integrated directly into the house’s insulation layer. In addition, the primary glazing should be south facing, the structure should be compact in order to avoid...

By the way: opening the windows is perfectly okay! The widespread belief that "You can never open the windows in a 'Passivhaus'" is simply not true. Of course you are able to open the windows in a "Passivhaus". The thing is, you do not need to, for the rooms are continuously supplied with fresh air – air which is even free of pollen, pollutants and dust. Five advantages of the "Passivhaus" Architectural facts and figures for the "Passivhaus" Good thermal insulation and compact building envelope Free of thermal bridging with a U value ≤ 15W/(m²K) South-facing structure free of shadow Passive...

400 million square metres worldwide EWIS components from Sto are unparalleled – and have been for more than 40 years The energy requirements of "Passivhaus" are directly dependent on the quality of its insulation. In other words, buildings which are otherwise well insulated can find their energy balance severely affected by even a few thermal bridges. As a specialist for detail solutions and leading provider of EWIS for more than 40 years, Sto is your ideal partner for state-of-the-art external wall insulation systems. 400 million square metres of Sto systems worldwide attest to that!...

Insulation systems deserve a closer look. Sto offers optimum solutions for every detail. When building a "Passivhaus" it is essential that potential thermal bridges are eliminated at the time of construction. Penetrations of the thermal envelope should be kept to a minimum and building components should be thermally insulated. The basic rule is, the better insulated the connections, building corners, projections, recesses, reveals etc., the fewer the thermal bridges that will be created. Those who want to be on the safe side rely on Sto’s systems which have been specially certified for use...

EWIS solutions from the market leader. Certified systems from Sto. Weather, thermal insulation, sound insulation and fire protection... The diverse range of insulation systems available from Sto provides the ideal characteristics to meet all individual needs – and offers crucial advantages in terms of quality. Our quality assurance process ensures this, and external quality control organisations confirm it: the Sto EWIS product range is renowned among architects, planners and applicators for its durability, reliability and economy. Certified quality In addition to careful planning,...

An exemplary case study: StoTherm Wood for a "Passivhaus". Retter detached house, Ratten, A, Reinhard Hausbauer, Ratten, A Awarded the internationally recognised natureplus seal of quality With its soft wood fibre insulating board, StoTherm Wood fulfils the highest standards for environmental compatibility and sustainability. It is not only in timber construction that ecological insulation is good for the building biology, for it is free of emissions, compostable and easy to dispose of. It offers an economical and environmentally friendly way to insulate load-bearing timber structures and...