Penetrating Damp: Signs, Causes and Solutions

Moisture will find a way to get into your property, one way or the other. Even the smallest hole or crack in the wall can allow water to enter. If not treated right away, you might be faced with penetrating damp before you know it which can quickly lead to more serious issues for your property.

What Causes Penetrating Damp?

Penetrating damp is caused by water seeping through the walls. It is typically caused by permeable walls. Ageing walls lose their ability to protect your home from rain penetration over time. Another cause can be brickwork damage that allows water to enter. Roof damage, poorly installed windows and defective guttering and downpipes can also be culprits.

Signs of Penetrating Damp

  • Musty smell
  • Black mould growth on skirting boards and walls
  • Water drips or damp patches on ceilings, walls and floors
  • Cold rooms
  • Stained or blistered plaster
  • Rotting skirting boards or wooden floors
  • Roof leaks

Penetrating Damp Treatment and Prevention


Damp is treated by eradicating the moisture source at its core. This can be achieved by installing a barrier between your property and the damp. Penetrating damp proofing is carried out from the outside of your home making it a lot more cost-effective since you won’t have to replaster inside your home. Damp Proofing specialists, Hydrostop SA, take it another step further by removing the damp completely.


There are several things you can do to protect your home against penetrating damp. Below are some suggestions:

  • If your home is prone to damp, invest in an electronic moisture meter to check moisture levels regularly
  • Inspect downpipes for blockages
  • Make sure your household appliances aren’t leaking
  • Look out for water coming into your roof’s loft
  • Inspect for cracks in your rendering regularly

Damp proofing with a specialist will save you money in the long run since your home will be protected against damp for many years to come. For more information about Damp Proofing Johannesburg or for a free quote, get in touch with HydroStop SA today!


Damp Proofing Pretoria

3 Steps to Take This Summer to Avoid Damp in Your Home In Winter

We know it will be summer for at least a few more months but before you know it winter will be here and it will be cold and damp. Many people face damp problems in winter due to excess condensation or neglected roof leaks. And while Gauteng doesn’t receive rainfall during winter, the leak you acquired and ignored this summer will come back to haunt you.

To prevent damp issues in future, we suggest waterproofing your roof and walls. This affordable solution will save you tons of money on damp treatment and repairs in the future. So while you decide on the best time to book Hydrostop for your waterproofing, let’s look at other things you can do to prevent damp in your home.

Check Gutters and Downpipes for Blockages and Damage

Make sure that your gutters are cleaned out, connected and flowing freely. If you have a sump pump, make sure that it drains at least 3 meters away from your property. The last thing you need is for rainwater to flow right into the foundation of your home and wreak havoc.

Inspect Your Roof and Walls

Check for roof leaks, any roof damage or water buildup that could lead to bigger issues. Also, look out for cracks in your basement floors and walls. Water accumulation in the soil beneath the basement floor can create pressure, resulting in cracks. Water stains and wall/floor discolouration, as well as salt residue, are other things to check for.

The smallest leak or crack can lead to moisture problems and even structural damage, putting the lives of yourself and your loved ones in danger.

What To Do If You Find a Problem

If you find any problems, it’s best to get them checked out by a professional like HydroStop SA right away. We’ll do a thorough inspection to evaluate the extent of the problem and give you a recommendation on how to solve it for good.

HydroStop SA specialises in waterproofing any type of roof, parapet and retaining walls as well as basements. For more information or to book your waterproofing in Pretoria and surrounds, speak to the team at HydroStop today!