Rising Damp In Concrete Walls

Rising damp is most often found in older homes that don t have a damp proof course dpc or where a dpc has failed.

Rising damp in concrete walls.

Because of a highly successful sales campaign for over 30 years by specialist remedial contractors installing injected chemical dampproof courses this misdiagnosis of rising damp has also become synonymous with a diagnosis of a lack of an injected chemical damp proof course. Indoor and outdoor use an acrylic brush on membrane dunlop damp proof waterproofing will prevent rising damp efflorescence and will resist negative hydrostatic pressure. Right now parts of australia are in the grip of a rising damp and mould scourge. Groundwater not only rises through capillaries in walls it can also rise up in concrete floors.

The common causes are a missing damp course or the deterioration of the damp course layer due to age. Rising damp and mould. It often happens to older buildings. Drill holes 18 20mm diameter in your walls and as such this method is only really suitable for stable thick stone.

Rising damp is widely misdiagnosed in existing buildings based on the incorrect interpretation of visual evidence and the readings of moisture meters. Capillary penetration of fluid from the ground up through concrete or masonry is known as rising damp and is governed by the shape and porosity of the construction materials through which this evaporation limited capillary penetration takes place. If you have damp patches bubbling paint crumbling plaster or powdery deposits on wall surfaces close to the floor rising damp is probably the culprit. It has excellent adhesion to most substrates including brick masonry concrete block concrete stone and timber and is simple to apply with a brush or roller.

If left untreated rising damp can carry soluble salts up into the masonry causing what s known as efflorescence which can eventually destroy foundations and in severe cases result in once solid masonry eroding and crumbling away. Rising damp usually occurs in masonry. Rising damp is a relatively rare form of damp that affects the walls of buildings. Luckily there s an easy way to fix rising damp before it reaches further up your wall using a chemical cream treatment.

This means that ground water is effectively sucked up through tiny tubes in the bricks like a series of straws. This water contains salts that also travel up through the wall. Mix the cement based mortar with water to make a slurry and use a plastic heavy duty injection gun to inject this into. Rising damp is a common problem when water absorbs through a brick foundation and causes damage to your walls.

It occurs when moisture from the ground travels up through the walls by capillary action.