Air Brick: A perforated brick that is built into a wall to increase ventilation.
Chemical Damp-proof Course: A form of damp-proof barrier formed by injecting or diffusing a liquid or semi-liquid mixture into a wall.
Condensation: Water droplets which form on cold surfaces – like walls and window panes – when warm damp air comes into contact with them.
Damp Proof Course: A layer of impermeable material that stops moisture rising from the ground into a building’s walls. Typically layed at aleast 2 brick courses above ground level. Commonly referred to as DPC.
Damp Proof Membrane: A waterproof layer which stops moisture rising through a sub-floor such as concrete. Often referred to as DPM.
Dehumidifier: A machine which removes excess moisture from the atmosphere.
Dry Rot: A wood rot – caused by the basidiomycete fungus – which typically affects damp timber and causes it to darken and crack into ‘cubes’.
Lateral Moisture Penetration: Water which enters a structure through a side wall.
Rising Damp: Moisture which enters a house by rising from the earth and through the lower parts of the structure.
Wet Rot: Rot occuring as a result of direct moisture or damp, which can occur both indoors and outdoors.
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