Project 103
Last modified by the author on 03/02/2021 - 20:55
Renovation
- Building Type : Isolated or semi-detached house
- Construction Year :
- Delivery year : 2018
- Address 1 - street : rue des Américains 103 7022 HYON, Belgique
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 293 m2
- Construction/refurbishment cost : 178 000 €
- Number of Dwelling : 1 Dwelling
- Cost/m2 : 607.51 €/m2
-
Primary energy need
44 kWhep/m2.an
(Calculation method : )
"Projet 103" consists of the renovation of an old and unhealthy house. The objective was to reach the "Q-ZEN" energy standard (2021 standard in the Walloon Region, Belgium) at the end of the renovation while doing without fossil fuels: only a wood stove provides heating for the house.
The programme includes insulation of the envelope (with, in particular, bio-sourced insulation for the roof: Gramitherm), careful airtightness, double flow ventilation and photovoltaic panels.
The label of the house is A+, which is better than what is required for a new house in 2021.
Data reliability
3rd part certified
Photo credit
Elie Delvigne
Cecile Hoyos
Denis vasilov
Contractor
Construction Manager
Stakeholders
Designer
Homeco architecture
Xavier Bachelart
https://www.homeco.be/architect
Owner approach of sustainability
The aim was to carry out a renovation (environmental impact of a renovation vs. new construction) of a house in an urban context (proximity to services, public transport, etc.).
The objective of the renovation was to show that it is possible to achieve high energy performance (A+ label) without the use of fossil fuels (only a wood-burning stove heats the house) and by using bio-based materials (gramitherm insulation on the roof).
The consumption of the house is currently 0 € (wood recovered from neighbours, electricity compensated by photovoltaic panels).
In terms of biodiversity, a permaculture vegetable garden, a greenhouse and a henhouse have been installed.
Architectural description
Work on the building envelope:
- external insulation of walls ;
- insulation of the attic floor;
- triple glazed aluminium joinery;
- insulation of the floor slab and the cellar ceiling;
- work on the airtightness.
Systems:
- Heating by wood stove (independence from fossil fuels);
- Domestic hot water by electric boiler (simplicity of installation);
- double flow ventilation system with heat recovery;
- photovoltaic panels to compensate for electricity consumption.
Energy consumption
- 44,00 kWhep/m2.an
- 510,00 kWhep/m2.an
- 40,00 kWhef/m2.an
- 658,00 kWhep/m2.an
Envelope performance
- 0,33 W.m-2.K-1
- 0,62
- 5,00 Test blower door
Systems
- Wood boiler
- Individual electric boiler
- No cooling system
- Double flow heat exchanger
- Solar photovoltaic
- Wood boiler
- 100,00 %
Urban environment
Product
Gramitherm
Gramitherm
https://gramitherm.ch/Finishing work / Partitions, insulation
Grass-based insulation
Happy to test this bio-based, innovative and local solution
Double flow ventilation
Zehnder
https://www.zehnder.be/HVAC, électricité / ventilation, cooling
Double flow ventilation
Improved air quality, night cooling in summer
Wood stove
STUV
https://www.stuv.com/frHVAC, électricité / heating, hot water
Wood stove
Wood stove "heat", independence from renewable energy
Photovoltaic installation
JA Solar
https://www.jasolar.comManagement / Others
20 solar panels of 270 Wp
Electricity bill at 0
Solvent-free paint
Peintagone
https://www.peintagone.be/Finishing work / paints, mural, wallcoverings
Velvety matt acrylic paint, almost solvent-free and plasticizer-free, very washable.
Solvent-free paint used throughout the house to minimise the air quality impact of finishes
Construction and exploitation costs
- 1 500,00 €
- 6 900,00 €
- 190 000 €
- 30 000 €
Water management
- 30,00 m3
- 40,00 m3
Indoor Air quality
GHG emissions
- 1,00 KgCO2/m2/an
- 120,00 KgCO2 /m2
- 50,00 an(s)
Reasons for participating in the competition(s)
L'objectif premier du projet est de montrer aux particuliers et professionnels qu'il est possible d'atteindre une haute performance énergétique en rénovation. Le bâtiment est labellisé A+ (meilleur que le niveau d'exigence des nouvelles constructions en 2021).
Le second objectif est de montrer que le premier est atteignable en utilisant des matériaux biosourcés produit localement (Gramitherm, isolant à base d'herbe de prairie, produit à Auvelais en Belgique).
Enfin, le troisième objectif visé et atteint est de se passer des énergies fossiles afin de réduire au maximum l'empreinte carbone du bâtiment.