Comes from contact between a wall and the ground.
Moisture which carries salts from the ground creeps up the wall by capillary action. The moisture evaporates leaving tell tale salts on the wall surface .This is a sure sign of rising damp.
Appears at low level and rarely rises above 1.5 meters
To avoid cost , and where salt damage is slight , we recommend no re plastering initially, but a free re visit after 6 months to ascertain if required, This is in line with British Standards.
Treatment is the injection of a new damp proof course
Penetrating Damp & Dry Rot
Appears as a damp patch may disappear in dry weather
Left untreated mould may develop, then wood rot and fungus
In extreme cases can lead to dry rot - very invasive and expensive to repair if left
Treatment is repairs or a water proof barrier where penetration cannot be stopped such as high ground level
Condensation & Mould Problems
Is caused by warm inside air meeting a cold surface and water being deposited from the air as it cools. It may be especially obvious on windows and the inside surface of outside walls.
Evidence, is black spots of mould on decorations or furnishings.
Treatment is to improve ventilation by inserting passive vents