Eco-construction of a micro-nursery in Pernay

Last modified by the author on 13/06/2019 - 09:53

New Construction

  • Building Type : Preschool, kindergarten, nursery
  • Construction Year : 2017
  • Delivery year : 2018
  • Address 1 - street : rue de la Gare 37230 PERNAY, France
  • Climate zone : [Cwb] Mild, dry winter, cool and wet summer.

  • Net Floor Area : 183 m2
  • Construction/refurbishment cost : 328 666 €
  • Number of Children : 1 Children
  • Cost/m2 : 1795.99 €/m2
  • Primary energy need
    97 kWhep/
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

-Compactness of the frame, South solar gains, solar protection, reinforced insulation, biosourced materials
-Low floor of insulating RCH
-Reinforced insulation of buried parts
-Structure and timber frame
-Wood cladding, zinc and veture composite panel
-Outer / inner insulation made of wood wool
-External joinery reinforced insulation, profiles with thermal / phonic bridge breakage
-Low consumption and servo lighting fixtures according to occupancy rate
-Limited flow faucets
-Mixed low temperature condensing boiler
-High efficiency double flow ventilation
-Reinforced airtightness

Sustainable development approach of the project owner

Meet the demand of the families of the Commune

Efficient, economical and virtuous building: communal will

Architectural description

Coherence with the ambitions of the public authorities in terms of sustainable development / confirm the choice of a virtuous, sustainable, adaptable and evolutive constructive principles / Choose simple materials of maintenance to make choices of design guaranteeing the optimization of the energy costs during the ranges of occupation management / Controlled and regulated energy

Search for energy sobriety / optimisation of the time "construction site" / respect of the allocated budget qualification of the southern entrance of the Commune interaction direct between MICRO-CRECHE and existing buildings / work on the envelope and the volumetry (volumetry and simple contrasts) / interior spaces quickly readable/  benchmarks for users concerning general soothing ambient comfort (brightness, colors, materials, acoustics) / PMR regulation requirements (walk-in building)


Construction Manager




    Mr RIBEIRO - 02 47 44 24 45 - [email protected]

    exterior joinery - locksmith



    Mr PAIN - 02 47 25 07 08 - [email protected]


Contracting method

Separate batches

Type of market

Global performance contract

Energy consumption

  • 97,00 kWhep/
  • 98,00 kWhep/
  • RT 2012

Envelope performance

  • 0,25 W.m-2.K-1
  • • external walls: U = 0.145 W / m2 ° C
    • low floor: Up = 0.130 W / m2 ° C
    • roof: U = 0.166 W / m2 ° C
    • exterior joinery: Uw = 1.40 W / m2.K - Sw = 0.53 - TLw = 0.65
    • coefficient. thermal bridges: 0.120 w / ml ° C and 0.60 w / ml ° C

  • 0,86
  • I4

  • 0,60


    • Low temperature gas boiler
    • Condensing gas boiler
    • Low temperature floor heating
    • Low temperature gas boiler
    • Condensing gas boiler
    • No cooling system
    • Double flow heat exchanger
    • No renewable energy systems

Urban environment

  • 424,00 m2
  • 52,00 %
  • 48,00
  • -Requalification of the southern entrance of the commune

    -Direct interaction between MICRO-CRECHE and existing buildings

    -Proximity of the plot of the site compared to the urban center (suburban area, public transport, local shops, services, ...)




    Finishing work / Partitions, insulation



Construction and exploitation costs

  • 30 000
  • 360 000


    -Immediate proximity to the public space and access to the building

    -Legibility of the 2 separate volumes constituting the building (urban landmark)

    -Easy identification of the entrance to the building (central access, zinc cap, ...)

    -Solar contributions + natural light South and West (activity room, administrative areas, staff relaxation area) = 60% of the total glazed area

    -Natural lighting through the reception area

    -Sun-breaker South entrance

    -Light interior colors - contrast between vertical walls and horizontal walls ( perception of interior volumes)

    -Reinforced insulation of the outer walls of wood wool

    -Reinforced insulation of the wood wool

    -Interior dividing walls Isophonic dividing partitions (children's areas / surrounding areas)

    -Acoustic ceilings

    -Flexible isophonic flooring

    -Non parallelepipedic activity room

Reasons for participating in the competition(s)

-Compacité du bâti
-Apports solaires Sud
-Protections solaires
-Isolation renforcée
-Matériaux biosourcés
-Pancher bas du RCH isolant
-Isolation renforcée des parties enterrées

-Structure et ossature bois
-Bardage bois, zinc et vêture panneau composite
-Isolation extérieure/intérieure en laine de bois
-Menuiseries extérieures isolation renforcée

-Profils à rupture de pont-thermique/phonique
-Appareils d'éclairage basse consommation et asservissement suivant taux d'occupation
-Robinetterie à débit limité
-Chaudière mixte à condensation basse température
-Ventilation double-flux à haut rendement
-Étanchéité à l'air renforcée

Building candidate in the category

Health & Comfort

Health & Comfort

Users' Choice

Users' Choice

Green Solutions Awards 2019 - Buildings

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éric leconte


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Green Solutions Awards 2019 - Buildings