Mersch «Koppelwee» 15
Hybrid passive house built in concrete and solid wood in Mersch
This "hybrid" passive house made of concrete and solid wood has been realized at "Koppelweg I" housing estate in Mersch (Grand Duchy of Luxembourg).
On the ground floor, the house offers a bright living room with a beautiful contemporary oak kitchen. Inside and outside merge thanks to large bay windows of the same height as the ceiling which allow access to a pleasant terrace. The ground floor is composed of 3 bright bedrooms including a master suite with dressing room, bathroom, as well as a shower room.
Specials: All the walls of the ground floor corridor are made of oak including the interior doors. This coating is continuous on the walls of the three bedrooms. The combination of these walls with white ceilings and black parquet brings a sober and elegant atmosphere to the premises. Generally speaking, the spirit of the house was deliberately designed in a play of light and dark surfaces.
The symbiosis of concrete and wood is explained for its properties linked to the inertia of the building (better thermal comfort) and for its great acoustic capacities. The solid wood inside naturally warms and softens the modern aesthetic side of the house.
Particular attention has been paid to the acoustics of the bedrooms using a triple wall construction system. Each room has its own four walls and solid wood slab that are acoustically separated with hemp between these walls. Thus, we obtain very good acoustic values, similar to a concrete wall.
On a technical level, the installation of a heat pump with an ice tank to heat and cool the passive house should be noted. Controlled mechanical ventilation regulates the constant supply of fresh air. The ventilation air flow rate is controlled by CO2 and humidity measuring probes in each living room, which guarantees good air quality throughout the house.
The house is built using the latest passive construction technology. Ecological materials were preferred: no polystyrene or PU foam, but wood fibre celluose and cellular glass. In addition, the entire concrete area has been produced with waterproof concrete, which makes the polymeric sealing strips redundant.
Photos: mypixelworld.be / Stéphanie Bodart