The 2 kWh/m²a house. One of the most energy efficient houses in the world - when referring to thermal performance, as at the time of writing only two houses in the world have proved to be better, although having the benefit of a softer climate. Airtightness value for the air pressure test (blower doors test) of n50 = 0.1/h. Proudly wearing the Passive House plate since 2019.
We started with a Passive House foundation, using foam glass gravel insulation (geocell), an environmentally sound alternative to XPS.
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Straw Panels Phase
The house exterior shell is entirely made of Timber Frame Panels with straw bale insulation. They were not yet fully enclosed in a box type system. The building yield was around 100 linear meters of exterior panels per day. Everything fit together like puzzle pieces, as Ria House was starting to take form.
After we finished to put all the panels into place, we covered the house with a breather membrane that would allow the eventual indoor humidity to find its way outside the house through the walls, avoiding condensation and moisture.
A Passive House can not work without a HVAC system, which refreshes the entire volume of air constantly. It preheats and treats the air that comes inside and recovers the heat of all its indoor sources, be it indoor appliances or even the exhaled air of humans and animals breathing
The entire shell was covered in THD slabs. This extra insulation material is meant to correct all the thermal bridges happening at the connection of the individual elements of the house. This solid surface layer is vapour-permeable and hygroscopic and enables plasterboards to be fastened directly to it.
The entire southern wall of Ria house is glass-made, with frames that are subtly integrated into the Greenhouse structure, which results in a total U value for the entire Greenhouse wall of 0,5 W/m²K.
This enables the Sun to flood the interior space with light. Interior plants and vegetables, harvested all year round, intermediate the indoors-outdoors relation, keeping us connected to nature.
The entire southern wall of Ria house is glass-made, with frames that are subtly integrated into the Greenhouse structure. This enables the Sun to flood the interior space with light. Interior plants and vegetables, harvested all year round, intermediate the indoors-outdoors relation, keeping us connected to nature.
We are currently working on the interior finishes of the house. Both winter and summer passed, and the temperature inside, although the HVAC system has not been mounted yet, did not exceed 24 Celsius Degrees in the hottest day and did not get below 20 Celsius Degrees during the coldest day so far.
Natural finishing materials are going to complete the concept of this house. The wood structural elements are going to be protected with linseed oil. Natural wood flooring is going to be laid in the living area, bio wool carpet is designed to give a more cosy, tactile feel in the bedrooms, whilst for all the bathrooms, natural stone like white marble and black slates have been chosen.