Rising Damp
Water rises by capillary action where inadequate or damaged damp proof courses are present in the walls of the home.
Descending Damp
Lateral ( Penetrating) Damp
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Damp Cause Analysis
Dampproofing Do’s & Dont
Dont's
- Scrape and paint
- Apply a waterproofing product on the wall to the height of the dampness, as the dampness will rise above the waterproofing and create a bigger problem.
- Do only one side of the wall.
Do's
- Remove contaminated plaster to plus minus 200mm above the damp to dry brick.
- Inject a new DPC and waterproof below/above the new DPC.
- Waterproof both sides of the wall where possible, and re-plaster with a salt retarding plaster.
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What health problems does black mold cause?
Toxic black mold, or Stachybotrys chartarum, as it’s known to scientists, can release spores as it feeds on organic materials in common household materials like drywall, carpet, insulation, or sub-flooring that have been exposed to moisture. These spores, if ingested or inhaled, can cause a range of unpleasant and even dangerous symptoms in humans.
What are Salts
It’s Not the moisture that causes damage in the walls/plaster, but the salt contained in the moisture. Building materials such as sand, cement, brick, and water contain a variety of salts. Damp is the vehicle but salts are the driver, and do their damage and have to be removed if a permanent solution is to be found
Buying a New Home?
Take a moment and make sure that there is no dampness present, some sellers go to great lengths to hide the dampness.
