Do you have trouble with mould, damp walls and mason work? This blog may help you!

Moisture causes saltpetre – Saltpetre causes moisture

Geposted am | Februar 19, 2010

If ascending dampness stays long enough in mason work (talking particularly about decades or centuries) moisture has enough time to dissolve salts from the ground and building materials.
Salt combined with water gives water a whole new quality and suddenly water becomes conductive.
This causes electrical processes but is currently not an item.
Combined with water salt is only able to be divided from it if water evaporates, which usually happens on the masonry surface.

By evaporation salt releases unexpected powers and causes flaking plaster and paint, destroys the material which used to transport the salt once.
But if salt remains on the surface it’s supposed to cause damages. It’s popularly called Saltpeter.

Salt attracts moisture. If you once forgot fresh purchased pretzels lying in a plastic bag you’ll find them being rather watery later. The same happens to the masonry surface especially if there’s high humidity like in a rainy summer. The owner keeps the basements windows tilted all day long and warm air penetrates to the rooms.

Salt appearing on masonry surface works like sponge to high humidity in rooms. Now the salt attracts moisture and leads it back into mason work. The result is a wall being humidified by hygroscopic moisture.

The solution to this problem is simple: Whenever you notice salt on masonry surface of walls of basement or your flat just remove it immediately.
If you don’t want to call an expert take you vacuum and get all salt sucked away that has fallen to the ground.

As long as capillary rising damp is the reason for salt efflorescence this process will start all over again soon. You will have to call a specialist to remove the salt soon. He knows several procedures to dehumidify walls. But there hasn’t been developed a process to desalt affected walls yet.
But by dehumidifying you’ve got the chance to stop the salt from soaking the walls with dampness again and again and prevent a higher level of damages.

Werner Büsch ECODRY