The Ncube lab

Last modified by the author on 28/08/2015 - 16:43
  • Building Type : Isolated or semi-detached house
  • Construction Year : 2014
  • Delivery year : 2014
  • Address 1 - street : Maison 9780 WINCRANGE, Luxembourg
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 114 m2
  • Construction/refurbishment cost : 248 399 €
  • Number of Dwelling : 1 Dwelling
  • Cost/m2 : 2178.94 €/m2

Certifications :

  • Primary energy need
    39.1 kWhep/
    (Calculation method : RGD du 30 novembre 2007 - bâtiment d'habitation )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

The future of one-family houses brought to life in a prototype house in Luxembourg. It is the result of three years of development and cooperation with a number of partners. With the support of the Luxembourg Ministry of the Economy, the support of Neobuild, Newconcepts and the H Tudor Public Research Centre and in partnership with the companies Dupont de Nemours, Bosch, Saint-Gobain Glass, Home Eos and Peintures Robin, the Luxembourg-based wood construction specialist Naturhome SA has designed Ncube, a highly industrialised approach to construction which is used to build passive one-family houses which are AAA-rated (mandatory standard for new builds in Luxembourg from 01/01/2017) and AAA+ (energy-positive house from 01/01/2019) as well as well-equipped and finished, all on a modest budget.


By bringing together at the construction site the 2-D prefabricated walls and self-supporting 3-D modules which are fully fitted out in the factory (international patent pending) and making use of innovative materials and equipment, it is possible to provide a home which is cutting edge in terms of its thermal and acoustic performance whilst remaining affordable.


The inspiration for Ncube is drawn from the production and organisational practices of the automotive industry. This also applies to its marketing: an online configurator allows the potential builder to design their future house and to get a price for it immediately.


The Wincrange "Living Lab" is a house which has been built using the techniques of Ncube. It will be lived in and fitted with sensors. Neobuild will monitor its thermal and acoustic performance throughout the year, along with variations in moisture and VOC levels. The purpose of these measurements is to confirm the laboratory results in a real-life environment.

See more of Ncube:

Data reliability

3rd part certified


    Structures calculist


    Francis SCHWALL

    Neobuild S.A., Technology and Sustainable Development Innovation Hub, was set up in 2011 by the Council for the Economic Development of Construction (CDEC). As the only hub of its kind, Neobuild has two main missions. The first is to promote innovation amongst all stakeholders in the sector.

    Other consultancy agency


    Lahcène Harbouche

    The Henri Tudor PRC contributes to Naturhome's Ncube project (RDI draft law) in the commercial production and site planning stages. The Centre's contribution involves providing examples of lean manufacturing techniques for the construction sector.

Contracting method

Lump-sum turnkey

Owner approach of sustainability

The Ncube modules are made solely from panels of laminated PEFC-certified wood, produced from wood taken from sustainably managed forests. The use of an amount of solid timber inside houses constitutes a significant additional carbon sink. The concept itself, which greatly reduces the amount of traveling for craftsmen to the construction sites, reduces the amount of grey energy involved in building houses.

Architectural description

A typical Luxembourg house - plastered façade and pitched roof with natural slates - 3 bedrooms - 1 study - 1 bathroom - 2 WCs - 1 entrance hall - 1 living room - 1 dining room - 1 kitchen - 1 equipment room

If you had to do it again?

4 houses have already been built using the new Ncube concept.

Building users opinion

Exceptional thermal and acoustic performance – no energy consumption – very high standard of living

Energy consumption

  • 39,10 kWhep/
  • 95,00 kWhep/
  • RGD du 30 novembre 2007 - bâtiment d'habitation

  • 9,80 kWhef/
  • 5,326 kWh = solar power generation
    854 kWh = DHW production requirements
    1,380 kWh = heating
    3,250 kWh = domestic electricity requirements

Envelope performance

  • 0,16 W.m-2.K-1
  • Uwalls = [0.08:0.12] W/m2K
    Uw = [0.7:1.6] W/m2K

  • 0,97
  • EN 13829 - n50 » (en 1/h-1)

  • 0,49
  • Excellent

Real final energy consumption

    2 014


    • Heat pump
    • Low temperature floor heating
    • Heat pump
    • Reversible heat pump
    • Double flow heat exchanger
    • Solar photovoltaic
  • 34,00 %

Smart Building

    Not yet installed but provided for by NEOBUILD

GHG emissions

  • 10,00 KgCO2/m2/an

Life Cycle Analysis

    Wood – cellulose – Flax wool

Indoor Air quality

    Tests in progress by the Luxembourg Ministry of Health


    Tests in progress by the Luxembourg Ministry of Health

    Lnw (CI) = 61 dB Rw (C;Ctr) = 54 dB





    Second œuvre / Cloisons, isolation

    Membrane which provides additional thermal inertia

    Measurements currently in progress

    Peintures ROBIN S.A.

    Peintures ROBIN S.A.

    BECKIUS Patrick - [email protected]

    Second œuvre / Peinture, revêtements muraux

    Verdello® is the first 100% bio-sourced paint. An indoor wall paint with an extra matt finish for warm interiors and at one with the environment. Made from tall oil, Verdello® is an entirely natural paint that comes from the plant world.

    Nothing to report

Construction and exploitation costs

  • 344 247,00
  • 2 445,00
  • 12 996,00
  • 63 220
  • 266 619
  • 45 000

Urban environment

House integrated into its rural surroundings

Land plot area

700,00 m2

Built-up area

10,00 %

Green space


Parking spaces

1 covered parking place – 2 uncovered parking places – 1 bike store

Building Environmental Quality

  • Building flexibility
  • indoor air quality and health
  • works (including waste management)
  • acoustics
  • comfort (visual, olfactive, thermal)
  • waste management (related to activity)
  • energy efficiency
  • renewable energies
  • building process
  • products and materials

Reasons for participating in the competition(s)

​- AAA+, positive energy, single-family passive house. – Built and fitted in the factory using modular-structure principles – Only healthy, ecological materials have been used (Ministry of Health monitors the absence of VOCs) - Economical: 25 % cheaper than standard passive buildings thanks to the production process being rationalized. Passive housing is now available to everyone! – And it can be configured on the internet – please go to:

Building candidate in the category

Matériaux bio-sourcés et recyclés

Matériaux bio-sourcés et recyclés

Bâtiment zéro énergie

Bâtiment zéro énergie

Santé et confort

Santé et confort

Green Building Solutions Awards 2015

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Author of the page

Olivier LOUIS

Directeur Général Adjoint

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Green Building Solutions Awards 2015