EXTERNAL WALLS

Damaged brickwork

Moss growth

Algae growth

Localised damp patches

are all common symptoms of penetrating damp, with defective pointing and spalling bricks.

When water-soluble salts like calcium carbonate or sodium sulphate are present inside brick, they dissolve in contact with moisture. The resulting salty water travels through the brick's capillaries to leach out of its surface.

Moisture evaporates on the wall, leaving a white and powdery substance on the surface. While efflorescence itself is mostly an aesthetic problem, it is a warning sign of dampness within a wall.

For more information call us on 0333 242 0857 or submit an enquiry for information on www.drdamp.co.uk

for damp surveys.

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