Fraunhofer Institute for Building Physics
Evaluation of microbial growth development on weathered surfaces
Building Chemistry, Building Biology, Hygiene
| Measurement | Weathering experiment, durability, microbial susceptibility |
| Standard | Own testing method and published evaluation scheme |
| Measurement object | Complete walls/wall parts of test houses or special designed test specimen |
Technical data
| Sample size | Per variant at least a 1.20 m wide and 2.80 m high wall area or test specimen with an area of approx. 30 × 30 cm |
| Weathering experiment | Integration of a wall construction into a test house or setting up of test specimen Orientation towards west and/or east or based on consultation |
| Measured variables | Biological behavior of external construction materials/exterior building parts/façade systems, etc. under the influence of natural climatic conditions Determination of microbial growth development Exact documentation to the point Determination of the risk of complaints |
Special features
- After consultation other test sites possible (climate variation)
- Measurement at least quarterly, better monthly; seasonal course
More information
Test duration at least 12 months up to several years. Parallel investigation of the composition of the microbial growth allows a better growth management, concrete statements regarding prevention strategies.