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Rising Damp

What is Rising Damp?

Rising damp is a relatively common form of damp that affects the walls of buildings. It occurs when moisture from the ground travels up through the walls by capillary action. This means that groundwater is effectively sucked up through tiny tubes in the bricks, like a series of straws. This water contains salts that also travel up through the wall.

Around the affected wall, you get other porous building materials such as plaster sand and the windows joints from not installing correctly. These materials will also absorb the groundwater and rain water easily and you may find evidence of bubbles and mould.

Generally rising damp is first noticed by the damage it causes to the internal walls of a building. Plaster and paint can deteriorate and any wallpaper tends to loosen. A visible stain often appears on the wall in the form of a tide mark at the point where the groundwater has reached, we call this the evaporation zone. You may also see salts blooming on the internal surface. This is something often associated with rising damp and will lead to the delamination of paints and even plasterwork. Externally, mortar may crumble and white salt stains may appear on the walls.

Causes of Rising Damp

Most buildings have some form of barrier installed at the lower level of the foundation wall to prevent water from rising up into the walls. It is called a damp proof course (DPC). In the past they were made of non-absorbent, water-resistant materials such as slate, bitumen, and in our present and future a plastic (DPC) depending on the period the property was built. Most old homes that are older than 20 years the (DPC) erodes as the (DPC) only lasts 20 years. The other causes of damaged (DPC), would be with mechanical wheel barrows when they built the house, the (DPC) only needs 1 hole to allow all the ground water to enter and destroy the rest of your walls over time. The last cause would be that the builder forgot completely to tell his team to install it for the client when the home is being built. The only way now would be with the Aquapol technology.

The Aquapol solution changes the polarity of the water, thereby causing it to move back down the capillaries into the ground.