Rising Damp

Rising Damp

Rising Damp and its treatment

Rising damp is a very real possibility wherever a wall is in contact with the ground. The evaporation of water from the surfaces of the wall exposed to the air causes the fabric of the wall to act as a 'sponge', drawing moisture up from the ground through bricks, stone or mortar.

A wall has direct contact with the subsite when a damp proof course has been omitted or has broken down. The simple cure is to install a new damp proof course at a height determined by the 

Chemical Injection

floor and external ground levels either by chemical injection or electro osmosis.

Chemical injection

Damp proof course injection is the most widely used method of installing a damp proof course into an existing building.

The system is practical, effective and economical and causes the minimum possible disruption to the occupants of the building being treated.

In line with our environmental policy Brit Rem Services introduces a mortar repellent injection cream via the mortar bed into the affected wall. The product has been designed with the environment in mind.

The formulation is water based and is low hazard, non caustic and non inflammable. Once installed it uses the moisture contained in the damp wall to diffuse where it is most needed before curing to form a water-repellent resin.

Electro-osmotic Damp Proofing

Electro-osmosis has found increasing acceptance as an alternative to fluids and physical damp courses. Electro-osmosis systems give observably the fastest results and there are few restrictions on the type of property into which it can be installed.vc

Theory

Moisture rises from the earth by capillary action. The principle is that interference with an electrical potential developed naturally between the wall and the earth can depress the rise of moisture. The system runs on very low voltage and minimal amperage's (mA range), and as a result its operation is completely safe for people, animals and plants with the added benefit of being CHEMICAL FREE.

A control power unit is automatically adapted to the degree of dampness in the wall. The electrical voltage remains constant and thus guarantees an optimal drying process which can be easily monitored via our logging system. Anodes (2) and earth rods (3) are installed to complete the system

Replastering

Although the installation of the damp proof course will prevent the passage of moisture from the ground and therefore cure the problem it is essential to combat the resultant salt contamination within the plaster by its removal (generally to a height of 1 metre) and replace it with a water resistant salts inhibitive plaster.

The sulphate cement we apply is suitable for use with waterproof additives and is designed to prevent any further passage of ground salts or salts caused by lateral penetration i.e. Sulphates.

Our Damp Proofing services also include;

  • Cellar Tanking
  • External Waterproofing
  • Surface Damp Proof membranes for solid floors

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