07/06/2026
Would you drink groundwater from beneath your home? 🤔
Probably not. But if you live in a house with rising damp, there's a good chance you're breathing it in every day.
Most people think of evaporation of rising moisture as water disappearing into air. Clean. Simple. Gone.
It isn't.
When groundwater rises through the walls of an older building and evaporates into the room, it doesn't just release water vapour. It releases a complex cocktail of minerals, salts, and biological material directly into the air you breathe.
🧂 THE MINERAL LOAD
By the time water reaches your wall it has dissolved nitrates, sulphates, chlorides drawn from the soil beneath your building. As it evaporates, it leaves deposits on the wall surface and releases fine particles into the air. These aren't inert dusts. They actively absorb and release moisture depending on the humidity in the room, and they're small enough to be inhaled into your respiratory system.
🍄 THE BIOLOGICAL LAYER
Sustained damp doesn't stay chemically simple for long. Moisture at wall surfaces supports mould and bacteria growth, releasing spores and microscopic fragments that can trigger allergies, inflame respiratory tissues, and affect immune function. The smallest of these particles bypass your upper airways entirely and reach your lungs directly.
🏛️ THE BIGGER PICTURE
Old buildings were draughty by design and those draughts were doing real work, continuously diluting and flushing out airborne particles. Modern energy upgrades reduce that natural airflow. Without the right approach upgraded buildings can trap rising moisture, co2 and other pollutants created inside the building.
The moisture pathway from ground to air hasn't changed but the building ability to deal with this moisture may have changed. But there are solutions specifically designed for older buildings that address this properly.
If your home has damp walls, it's worth understanding what that actually means for the air inside it. 👇
Find out more at www.dampprotectionirelandanduk.com or visit our page for more information.
