Penetrating Damp Symptoms
Before any form of dampness in walls can be treated, the source of the damp problem must be correctly identified. In order to find out which type of dampness is affecting masonry, a full examination of the property should be undertaken.
Penetrating Damp Symptoms on External Walls
Signs of penetrating damp can often be seen on the outside of houses. Damaged brickwork, moss and algae growth, as well as localised damp patches are common symptoms of penetrating damp.
Damage to Brickwork
One of the symptoms of penetrating damp is damaged brickwork on external walls. This is mostly caused by frost damage. When water freezes it expands. Moisture, which penetrated brickwork, expands in freezing weather conditions causing spalling and cracks in the structure of the wall.
Moss Growth on Outer Walls
Damp walls are a perfect substrate for moss and algae growth. These organisms are attracted to damp substrates and can spread widely along walls. Damp penetrating masonry ensures a habitable space for moss, resulting in an unaesthetic appearance.
Isolated Localised Dampness
Common symptoms of penetrating damp are localised damp patches on walls. Watermarks appear as a result of damp penetrating brickwork. These damp patches can grow in size when moisture continues to enter bricks.
Internal Penetrating Damp Symptoms
Symptoms of penetrating damp are not only visible on external walls. Common signs of penetrating damp on the inside of walls are damaged plasterwork, rotten timber and mould growth.
Damage to Plasterwork
Penetrating damp can cause the deterioration of paints and plaster, blistering, and the appearance of stains and salts on the surface of walls.
Wet Rot Affecting Wooden Fixtures
Damp brickwork can seriously affect wooden fixtures directly connected with it. Water can seep through bricks and saturate timber, causing it to rot and decay.