- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 20 Sep 2018
Moisture in buildings
Moisture is the presence of water, often in small or even trace amounts. Moisture can be found in water vapour, condensation, and in or on the fabric of a building and can cause damp resulting in problems such as staining, mould growth, mildew and poor indoor air quality, and so on.
The common sources of moisture in buildings include:
- Penetrating damp.
- Leakage from pipes, tanks, drains, and so on.
- Rising damp.
- Building defect, e.g. lack of adequate roof space ventilation, faulty retrofit installation, application of paint or plaster that affects the breathability of the building element, and so on.
- Indoor moisture sources, e.g. cooking, bathing, washing, hot tubs, indoor swimming pools, and so on..
- Natural or mechanical ventilation.
- Use of de-humidifiers or air conditioning units.
- Insulation of cold surfaces, such as pipes.
- Increasing air temperature.
- Removing sources of moisture such as drying clothes and ensuring vented tumble dryers are appropriately vented to the outside.
- Mending leaking pipes, wastes and overflows.
- Eliminating rising damp and penetrating damp.
- Introducing moisture barriers such as vapour barriers, damp proof membranes, and so on.
 Related articles on Designing Buildings Wiki
Featured articles and news
UK energy policy uncertainty as Welsh project put on hold
What collaborative working achieves and how it can be put in place.
BSRIA publishes the 2019 edition of its small but concise annual databook.
Using QSAND to measure the performance of disaster response.
What U-values are, why they matter and how they are calculated.
The need to ensure that we plan for all aspects of our bio-economy
BSRIA calls on government to reach deeper into the causes of pollution.
George Demetri brings a whole new level of technical knowledge to Designing Buildings Wiki.
Quality professionals need to take an active role in driving the completion process forwards.
The innovations needed to move from rhetoric to realisation.
Creating a sense of place, with radically-low running costs and the highest comfort levels.
A conversation between David Mitchell and Caitlin DeSilvey.