In my desire to contribute to the dissemination of a hitherto forgotten aspect, I would like to share with you the 25 principles of Building Biology, published by the Building Biology Institute (USA). 

They are a set of criteria for creating healthy, nature-connected, sustainable and beautiful living environments.  They take into account ecological, economic and social aspects in the choice of materials and the design of living spaces.

INDOOR CLIMATE

01.- To reduce pollutants and irritants and to provide sufficient fresh air.

02.- Reduce the presence of toxic fungi, yeasts and bacteria, as well as dust and other allergens.

03.- Use materials with a neutral or pleasant odour.

04.- Minimise electromagnetic fields and high frequency waves.

05.- Prioritise radiant heat for heating.

INTERIOR AND ARCHITECTURAL DESIGN

06.- To observe harmonious proportions and shapes.

07.- Stimulate sensory perceptions: sight, hearing, smell and touch

08.- Favour lighting conditions and spectrum close to natural light and use flicker-free lamps.

09.- Consider knowledge of physiology and ergonomics.

10.- Promote local and regional building culture and craftsmanship.

ECO-SOCIAL HABITAT

11.- Design infrastructures with a balanced combination of uses: short distances to workplaces, public transport, schools, shops, etc.

12.- To favour a way of living that satisfies human needs and protects the environment.

13.- To provide sufficient green space in rural and urban residential areas

14.- To strengthen local self-reliance and the involvement of local networks and service providers

15.- Select construction sites that are not contaminated by harmful waste, sources of radiation, pollution and noise.

CONSTRUCTION MATERIALS AND EQUIPMENT

16.- Use natural, non-toxic materials with as little radioactivity as possible.

17.- Ensure a balanced ratio between thermal insulation and heat accumulation, as well as between surface temperature and indoor air temperature

18.- Use hygroscopic materials.

19.- Minimise the moisture content of new construction.

20.- Optimise the conditioning and acoustic insulation of spaces (including infrasound).

ENVIRONMENT, ENERGY AND WATER

21.- Minimise energy consumption and use renewable sources.

22.- When building or refurbishing, avoid negative impacts on the environment

23.- Conserve natural resources and protect flora and fauna.

24.- Favour local building systems, choose materials and life cycles with the best possible ecological balance

25.- To ensure the best possible quality of drinking water.