Project F.

8281
Last modified by the author on 16/05/2018 - 18:18

New Construction

  • Building Type : Isolated or semi-detached house
  • Construction Year : 2016
  • Delivery year : 2017
  • Address 1 - street : 4041 VOTTEM, Belgique
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 96 m2
  • Construction/refurbishment cost : 136 000 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 1416.67 €/m2
  • Primary energy need
    75 kWhep/m2.an
    (Calculation method : )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

This is a single-family dwelling project for a couple with a child. From the beginning, the owners wanted to design a sustainable building of simple shape, simplified use, energy efficient and composed of healthy materials, with a tight overall budget. A detached car-port street and the positioning of the dwelling on the flat part of the land, slightly back and overhang, generate a sense of intimacy and have reduced excavations. The volumetry is simple and frank, the raw materials and textures and in reduced number. Emphasis was placed on energy efficiency and formal simplicity. It is a house to live with its own personality.

If you had to do it again?

The Eternit panel siding was quite complex to achieve for a perfect layout and to adjust the joints; the light color accentuates the small defects.

Data reliability

Assessor

Contractor

Construction Manager

Stakeholders

Contracting method

Lump-sum turnkey

Owner approach of sustainability

Achieve an autonomous dwelling in terms of annual energy consumption for heating and hot water needs. Use sustainable materials within budget and technical possibilities.

Architectural description

This is a single-family dwelling project for a couple with a child. From the beginning, the owners wanted to design a sustainable building of simple shape, simplified use, energy efficient and composed of healthy materials, with a tight overall budget. A detached car-port street and the positioning of the dwelling on the flat part of the land, slightly back and overhang, generate a sense of intimacy and have reduced excavations. The volumetry is simple and frank, the raw materials and textures and in reduced number. Emphasis was placed on energy efficiency and formal simplicity. It is a house to live with its own personality.

Energy consumption

  • 75,00 kWhep/m2.an
  • 115,00 kWhep/m2.an
  • -6,00 kWhef/m2.an
  • Heating: 1.371 kWh/an - ECS: 1.457 kWh/year

Envelope performance

    The envelope is composed of a load-bearing part in cross-laminated wood panels -CLT- on which is fixed a secondary structure in prefabricated wooden beams of Steico Wall type on 36cm thick; this structure is closed using wood fiber panels type Steico Universal 3,5cm thick. Cellulose wadding is then blown into the wells thus formed.

    n50

  • 0,30
  • Complete home automation.

Systems

    • No heating system
    • Heat pump
    • No cooling system
    • Double flow heat exchanger
    • Solar photovoltaic
  • 120,00 %
  • In annual report, the photovoltaic installation covers the necessary needs in heating and hot water production. The surplus is devoted to domestic electricity consumption.

Urban environment

    Dense urban fabric, well served in services, local shops and transport offer.

  • 285,00 m2
  • 19,00 %

Product

    Cross-laminated wood structure

    Eugen Decker

    [email protected]

     http://www.eugen-decker.de

    Structural work / Structure - Masonry - Facade

    Complete structure of the building in cross-laminated wood panels -CLT-, the wood species used being spruce.

    Speed ​​of execution - mounted in two days. The choice fell on a prefabrication company CLT not too far from the site in order to remain in an overall approach of acceptable sustainability.


    Double flux ventilation

    Zehnder

    [email protected]

     https://www.zehnder.be

    HVAC, électricité / ventilation, cooling

    MVC dual flow Zehnder Comfod 250 with electric heater

    In the context of this passive project, the installation of a dual flow ventilation unit was of course mandatory. Occupants quickly realized the qualities and usefulness of the system and the calculations showed that the installation of a heating system was superfluous and that the installation of a heating battery alone could meet the demand.


    Passive exterior joinery

    Pural

    [email protected]

     https://www.pural-profile.de/

    Finishing work / Exterior joinery - Doors and Windows

    The aluminum exterior joinery comes from Pural Eco 90 series. This profile has been awarded by the PassivHaus Institute. The range is quite small but this system offers a value for money very interesting.

    We benefited from the skills of Carpentry Peters in Weywertz, with whom we developed all the constructive details in order to best meet the PHPP calculations. The Eco 90 series is very robust and offers several interesting options such as the invisible hinges (chosen for this project) and the chassis foot profiles to make connections without thermal bridges and facilitating the installation of waterproofing membranes.


    Underfloor insulation

    Jackon Insulation

    [email protected]

     https://www.jackon-insulation.com

    Structural work / Passive system

    Underfloor insulation in extruded polystyrene -XPS-, on a thickness of 32cm.

    The complete packing of the supporting raft made of reinforced concrete with the help of system really makes it possible to protect itself from any constructive knot, while preserving the benefit of the thermal inertia of the concrete on the side of the protected volume. Once the concrete cleans executed on the stonework, the installation of this insulating raft required a small day of intervention. All the tightenings around the technical ducts crossing the insulating raider have been carefully executed.


    Sealing membranes

    Siga

    [email protected]

     http://www.siga.ch

    Management / Others

    The set of airtight joints was made using Siga products, known for their durability and the preservation of their technical qualities over time. Siga Rissan for the shell, Siga Fentrim for the exterior joinery.

    A first sealing barrier was generated at the junction of the constructive panels, on the inside. A second doubling barrier was then placed on the outside of the panels.


    Platform waterproofing membrane

    Sika

    [email protected]

     https://bel.sika.com

    Structural work / Carpentry, cover, titghtness

    Cover of the platform using a Sika Sarnafil polyolefin membrane, extremely durable. The laying of this hot-welded membrane does not require any form of slope and the tightness is guaranteed until the wall-covering.

    Weighted membrane with rolled gravel, of light color.

Construction and exploitation costs

  • 7 250,00

GHG emissions

  • 75,00 an(s)

Life Cycle Analysis

    Support structure in cross-laminated wood panels -CLT-; Steico Universal fiberglass closure panels; Isocell cellulose wadding insulation

Reasons for participating in the competition(s)

Le projet est conçu sur le standard passif. ​L'intention contemporaine est franche et simple. Afin d'optimiser la compacité du projet, un car-port muni d'une toiture végétalisée est aménagé en partie avant. Il s'insère dans un tissu urbain dense, bien desservi en services, commerces de proximité et offre de transport. L'usage de matériaux durables a été mis en avant: structure en bois contrecollé, usage d'isolants durables (ouate de cellulose, liège, panneaux de fibres de bois), plaques de sols et de doublage en cellulose, absence de parachèvement des murs et plafonds intérieurs (bois d'épicéa laissé apparent), revêtements de sols en bois non traités, usage de peintures écologiques, membrane de toiture-plateforme en FPO. Simplification des installations techniques: absence de système de chauffage hormis la présence d'une batterie de chauffe sur la VMC, domotique complète.Installation de production électrique photovoltaïque de 3,75 kWc, couvrant l'entièreté des besoins énergétiques annuels pour le chauffage (1.371 kWh/an), la production d'eau chaude sanitaire (1.457 kWh/an) ainsi qu'une partie de la consommation électrique domestique; le projet peut ainsi être qualifié d'énergétiquement positif en bilan annuel (hors consommation d'électricité domestique). Les données brutes du bâtiment:Besoin annuel de chauffage selon PHPP: 14 kWh/m²a (15 kWh/m²a max.)Exigence annuelle en énergie primaire selon PHPP: 75,8 kWh/m²a (120 kWh/m²a max.)Fréquence de surchauffe selon PHPP: 5,3% (10% max). Résultats du test d'étanchéité à l'air avant parachèvements: n50: 0,19 1/h (0,6 1/h max.) selon EN 13829, méthode A Résultats du test d'étanchéité à l'air final: 0,3 1/h (0,6 1/h max.) selon EN 13829, méthode A

Building candidate in the category

Energy & Temperate Climates

Energy & Temperate Climates

Users' Choice

Users' Choice

Green Solutions Awards 2018 - Buildings
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Olivier Davids


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