What is Rising Damp? Simply Explained
Rising Damp : Know the enemy!
This is the cause of your mouldy walls, that dank, smell, those salt deposits,
the bubbling, flaking or fretting plaster, the dirty and ugly tide marks,
the peeling wall paper, and source of your sinus problems?
Rising Damp - What is It?
Besides being the cause of your damp walls ...
To understand and appreciate the real solutions and to know that these work,
first we have to understand the problem - Rising Damp.
What is Rising Damp?
How & Why is this happening?
A brief explanation of what it is and how it is caused.
Rising damp is a form of dampness that occurs, particularly in older buildings, when groundwater rises up through walls, floors and masonry via capillary action which is the ability of a liquid to flow in narrow spaces in opposition to gravity.
Any masonry structure, unprotected by a properly installed course to prevent rising damp, is susceptible to natural rising damp. Damp will rise by capillary action through the pores of the masonry seeking a means of evaporation.
The moisture will continue to rise until it reaches a height where, unless no evaporation is possible, gravity takes over and pulls it down again. This height is seldom more than 1.20m, although deposits of ‘salts’ may be found higher in the wall, often driven there by the use of non-breathing plasters, renders, ‘tanking’, paints or vinyl wall papers.
Paper, sponge and brickwork have all something in common: they are porous, their structure consists of millions of thin, microscopic channels called capillaries.
Rising damp is water’s natural tendency to rise in the brickwork. Because of certain physical laws, water will rise inside the capillaries. This is called capillary attraction or capillarity.
Above: 1. Capillaries in charcoal (1500x) 2. Capillaries in limestone 3. Capillary attraction in glass tubes 4. Capillary attraction (rising damp) in brickwork
The height of the rising damp in the walls depends on several factors, such as the amount of water present in the soil, the porosity of the building materials, the weather etc. Rising damp is usually higher during the rainy season, or if the evaporation of the moisture is impeded in any way (e.g. using tiles, non-breathing cement plaster etc.)
The narrower the capillaries the higher the water will rise.
Watch this short video
How Can You Recognize Rising Damp?
Rising damp can be recognized by a series of symptoms, which forewarn of the gradual destruction of the building.
The destruction process can take several years or decades, and it typically starts with the paint (stains, flaking, blistering, peeling), then if left untreated will start destroying the plaster (initially sandy on the surface, then starts crumbling, becoming powdery), and in the final stage will damage the brick- or stonework (resulting in broken or cracked bricks, soft bricks, missing stones etc).
Here are some of the most typical signs of rising damp:
Unsightly/Unhealthy Rising Damp
Left: Here are three photos showing different effects of rising damp. These are "almost typical" and easily identifiable with the root cause - rising moisture.
Aquapol addresses this exact cause - with its moisture dehydrating system - that over time makes for the most effective, clean, eco-friendly solution to rising damp.
There is simply no more effective, proven and tested workable system in the world today than Aquapol.
Discover the Facts About YOUR Rising Damp
Get your building analysed for dampness.
Get the facts and information that really matters.
Your journey to permanent dry walls begins here.