Rising Damp - In a nutshell this is water soaked up from the ground by capillary action and is only a problem when a building has no Damp Proof Course, very common in older buildings or if the D.P.C has been bridged or damaged. Rising damp only rises about 1m above ground level due to gravity and the capillary forces.
The house damp solutions - is usually to inject a chemical D.P.C. This may need to be done to various areas and can occasionally need to be done internally as well as externally.
This type of work carries varying guarantee periods but usually between 20 - 30 years. Penetrating Damp - Water penetrating through the roof or walls. This is where water leaks into a building through a fault such as around a chimney stack or windows. Examples of this could also be missing roof tiles or lack of mortar between brick courses. Also look for leaking or missing drainpipes as these can lead to water soaking all the way through the wall.
How do I stop penetrating damp?
In some cases these internal patches will be simply rectified by making appropriate external repairs, for example re-pointing. However if this problem is more widespread internally this will lead to higher moisture content in plaster work, decorative finishes and the home in general. This will then need a more permanent solution. To stop house damp in Brisbane this continuing to be a problem, some form of external weather protection, such as a specialist render system or resin based clear coating would need to be applied.
Condensation
Usually more noticeable in winter, because the building is cold and because windows are opened less so moist air cannot escape. When warm moist air produced by ordinary household activities hits a cold surface it condenses into water droplets i.e. an outside wall or window condensation occurs.
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