Aspergillus
TG 26 Mould in Buildings, A BSRIA topic guide, written by Spyros Efthymiopoulos & Yasemin D. Aktas, and published by BSRIA in 2024, states:
‘Visible mould is a problem and should not be tolerated, regardless of what species it is. However, some species have heightened associations with excess moisture or water damage, and health problems: Aspergillus: Species of the Aspergillus genera are often treated as indicators of moisture damage and excess water. Especially, A. versicolor is listed in the international standard BS ISO 16000-17[3] as being indicative of the lack of moisture balance in a property. It is expected to be among the first moulds to thrive when the moisture content in a space is elevated for a prolonged time. High exposure to this mould leads to Aspergilloma or Aspergillosis, which particularly affect people with low immune support or pre-existing respiratory health problems.’
--BSRIA
[edit] Related articles on Designing Buildings
- Damp and timber report.
- Damp.
- Degradation of construction materials.
- Dry rot fungus.
- Mould growth in buildings.
- Moulds in historic buildings.
- Moisture.
- Penetrating damp.
- Recognising wood rot and insect damage in buildings.
- Rising damp.
- Rising damp in walls - diagnosis and treatment (DG 245).
- Stachybotrys.
- Ventilation.
- Wet rot.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Electrical contractors need to understand the practical implications.
The real barrier to getting more value from digital technology.
Your guide to The Construction Reset at UKCW Birmingham.
Accommodating the Victorian and Edwardian working woman. Book review.
Rethinking passive fire protection in design
PFP demands the same level of design rigour as structure or services.
38% of Gen Zs feel safe when a fire door is wedged open.
Stunning images from around the world
Shortlist for CIOB’s Art of Building photography competition.
Guidance for conversion of traditional pre-1919 stone buildings.
Industrial heritage in the Ruhr
A marked difference to the fate of industrial landscapes in the UK.
Communities will be able to build their own clean energy.
Why diversity and inclusion matters for SMEs
CIOB’s D&I Charter shows how practical changes can support long-term growth.
Cut electricity bills to power growth
Coalition sends joint letter to the Chancellor.

















