Sustainable by design 2050

An initiative of the UIA

Velux model home 2020

Activehouse

Sapienza_Universit___di_Roma

Architekturclips

Haus Ihlow

Haus Ihlow

Photographer: Torsten Seidel

Haus Ihlow

Photographer: Ludger Paffrath

Haus Ihlow

Photographer: Ludger Paffrath

Haus Ihlow

Photographer: Torsten Seidel

Haus Ihlow

Photographer: Torsten Seidel

Haus Ihlow

Photographer: Torsten Seidel

Haus Ihlow
Haus Ihlow
Haus Ihlow
Haus Ihlow
Architect
Eike Roswag, Dipl.-Ing. Architekt BDA
Engineers/Specialists
Dr.-Ing. Christof Ziegert, Civil Engineering, Specialist on Earthen Building Technology, Dipl.-Ing. Uwe Seiler, Civil Engineering, Static Calculations
Location
Western Europe - Germany - Ihlow, Brandenburg
Climate Zone
temperate
Design status
build
Date of completion
2005
Type
Housing
Site area (m²)
583
Footprint (m²)
131
GFA (m²)
209
NFA (m²)
180
NFA/GFA
0.861
Density
0.358
Gross Volume (GV) (m³)
1.254
Building Costs
234000 EUR
Building Costs / m² GFA
1119.617
Building Costs / m² NFA
1300
Building Costs / m³ GV
186602.871
Primary Energy (kWh/m²a)
24
Heating Energy (kWh/m²a)
68
Cooling / Heating-System

Solar thermal collectors (30qm), storage 4000 liters; additional central fire place (wood)

Use of renewable ressources - low tech
natural cross ventilation, use of high thermal mass
Use of renewable ressources - high tech
solar heating, energy storage, thermal building mass activation
Renewable, recycled, recyclable and innovative materials

Earth (load-bearing ground floor), wood (load-bearing first floor), hemp fibre insulation

Key Sustainability aspects
solar building integration, vernacular building strategies, renewable building materials, recycling and reuse, ecological building materials, innovative bulding materials, integrated planning process, participation of users in planning process
Sustainability rated
No
Social and ethical responsibility

The private family house, built almost entirely out of natural building materials, uses renewable energy for heating (sun and wood) and is a lighthouse eco building showing future options since 2004. The building uses an existing site of an old farm and is defining the edge of the village and border to the close by national park. The building is completing the old farm and protected village site. 

Ressource efficiency and environmental impact

The construction uses earth, wood and hemp fibres as natural building materials and is saving fossil resources. Not stabilised earth can endlessly be reused while adding water and putting the earth into a new form. At the end of the potential lifecycle the natural building materials also could be brought back into natural cycles. While using the sun and wood for heating, the environment and fossil resources are protected.  

Economic lifecycle perfomance

Being a pilot project using rammed earth in contemporary architecture in Germany, the building cost cannot be very low. The client was compensating the increased costs by taking part in the building process with a team of experts. So the costs was reduced the price of a conventional building.
Due to the character of a low-tech building the costs are reduced by using solar collectors and storage.