Putztechnik products for internal use

Building Biology and Plaster

The environments of our houses and workplace have a major influence on our personal comfort and health. We feel and perform best when comfortable.
Generally, climatic conditions of an environment are comfortable if the heat generated by our bodies maintains a balance with the heat lost at the clothed and unclothed surfaces of our bodies without an excessive amount of perspiration. This balance is dependent upon:
• air temperature
• relative humidity
• surface temperature of the surrounding area and
• airflow

Other factors can include:
• Moisture in the wall construction;
• Temperature gradients within the room;
• Diathermancy of glazed areas; (Ceramic tiles);
• Air quality (pollution through dust and unpleasant odours). The latter can originate from building materials, particularly if these are damp.
• Ventilation and airflow through free convection.
• Radioactivity of building materials.
• Ionisation of air and electrical fields in room.
• Heating and heating systems.
• Lighting.

Physiological research has shown that the average temperature of the air in a room in relation to the temperature of the walls should attain the following relationship to be comfortable for us. At an air temperature of 18° C, walls should be at approximately the same temperature. When the air temperature is higher the walls should be cooler, and vice-versa.

PT400

Whiteset Render, a gypsum-lime render suitable for a wide range of finishes, from a
straight polished finish to undulating sponged.

PT402

Whiteset Finishing Render, a gypsum-lime render for use where a high level polished
finish is required.