To provide the best possible service this site uses cookies technicians. Continuing browsing the site you consent to their use in accordance with our  Cookies Policy    

Green Habitat Efficient Envelope

Hall 26


An information and demonstration space for efficient envelopes in Hall 26


Scientific coordinators:

Massimo Rossetti (University Iuav of Venezia)

Norbert Lantschner (ClimaAbita Foundation)

Domenico Pepe (Casa Clima expert)


Airtightness is becoming an increasingly important issue. Reducing energy requirements by improving the thermal performance of the building envelope or using heat recovery systems is no longer sufficient to meet the goal of nZEB if not accompanied by airtightness of the building envelope. When correctly adopted on nZEB buildings, airtightness can contribute to around 30% of the energy requirements of the building. Failure to implement it correctly may result in additional losses with respect to those estimated by UNI/TS 11300, leading to a disparity between real consumptions and those estimated by means of the calculation.


Airtightness of buildings brings a number of advantages:

- Reduction in uncontrolled cold draughts in winter which may create discomfort.

- Cold air flows caused by uncontrolled draughts, contributing to higher energy losses due to the outflow of warm air in winter or the ingress of humidity and heat from outside in summer.

- Reduction in the transmission of noise

- Reduction in the ingress of external pollutants

- Reduction in the formation of condensation and interstitial mould

- Reduction in the effects of imbalance in mechanical ventilation, ensuring a constant exchange of air in all rooms


The dedicated space in Hall 26 displaed mockups devoted to airtightness demonstrating:

- the passage of utilities through an XLAM wall (electrical system, drains, mechanical ventilation, etc.)

- anchorage between subframe/wall and frame/subframe


The mock-up presented here by the companies WoodCapeWolf Fenster and Riwega was accompanied by demonstrations and notices explaining the importance of airtightness. 

In cooperation with