In the outlying area of Bavel, on the Bolbergseweg, after the cessation of a dairy farm, lots were realized on part of the agricultural land for the new construction of two detached houses. The owner of one of the lots held a closed architectural competition for a design vision for his new energy-efficient home to be built.
After winning the architectural competition, an exciting and mutually inspiring collaboration followed in which the winning design vision was further developed. The design process resulted in a special energy-neutral home where the clients have been living with great comfort and enjoyment for several years now.
The design of the house consists of three building volumes, designed and shaped in conjunction with each other. The main volume is white stucco with wooden accents and consists of two residential floors with a basement below. The gable roof is folded over to the vertical facade on the north side and is clad in fiber cement slates. The attached shed/storage room is designed according to the same concept where the facades are in masonry. The third section is formed by a one-story extension with large glass facades that provide panoramic views of the beautiful landscape from the living kitchen and lower sitting area.
The house was designed to be as sun-oriented as possible, using the passive house concept as a starting point. This means that the north facades are almost completely closed and the south and west facades with large facade openings let in as much solar energy as possible. To prevent overheating by the sun, both the flat and pitched roofs have wide overhangs and the facade openings are equipped with automatic blinds with a special curved profile. This profile, DBL ‘Drei Bogen Lamel’, also called S-profile, ensures that direct solar energy is blocked while maintaining visibility and light.
Special part of the house are the very high quality Internorm plastic-aluminum window frames, equipped with 3-layer insulating glazing and Purenit adjustment frames. Due to the careful detailing and installation of these window frames, thermal bridges are kept to a minimum and result in a very airtight connection.
The building envelope of the house is highly insulated and highly impermeable. The insulation value of the floor is 6.4 m2K/W, the facades 6.3 m2K/W (masonry) 7.7 m2K/W (wooden parts), 8.1 m2K/W (stucco) and 9.9 m2K/W (slate), and the roofs 7.0 m2K/W (pitched roof) and 7.3 m2K/W (flat roof). Slate facade and roof thus literally form a shell that is folded around the north side of the house like a warm blanket. The flat roof is executed in concrete and provided with a sedum roof so that the thermal mass provides a delayed effect of heating by the sun.
In terms of installation technology, the house is also special. Heating and cooling are provided by a ground source heat pump with a closed source. Delivery is through hoses in the floors. The house is ventilated using two ventilation units with heat recovery (WTW) and CO2 control, each providing fresh air to a part of the house. This creates a zoning in the house in which the first floor can be ventilated separately from the first floor.
The cold water network is prepared for the collection of rainwater so that, for example, toilets can be flushed. Finally, the southern roof of the main volume is equipped with 36 PV panels. This solar installation provides the entire house with the necessary electrical energy, both the building-related part (installations, etc.) and the residents’ part (domestic use).
As an architect, I value being able to perform the energy performance calculations myself as much as possible. In this way, the impact of certain design, material and installation choices can already be understood during the design process and optimized by “turning the knobs.
The carefully crafted architectural design and elaboration, the high-quality building envelope and the matched systems ensure that the residents experience a very comfortable indoor climate year-round and keep living expenses to a minimum.
Learn more about this special project or curious what Joris Hoogstede Architectuur can do for you to realize your energy-optimal home? Click <<<HERE>>> to contact us for a free introductory meeting.
project site
Bavel | North Brabant
client
private
design & realization
2014-2016
contractor
Contractor Houtepen BV
construction advisor
Hooijen Konstruktiebureau BV
installation consultant
Van Hout consultants and installers
frame supplier
Pladeko Windows & Doors
