Penetrating Damp: Stop the Mould in its Tracks

The problem with penetrating damp is that it not only affects the appearance of your home but also its structural integrity.
brown pavement road between trees and house during daytime

By Bruno Martins

Penetrating damp is a form of dampness that occurs when water enters a building through the walls or roof. Unlike rising damp, which occurs from the ground up, penetrating damp is caused by water penetrating the building’s external walls. This type of dampness can occur in any part of the building, but it is most common in basements, attics, and external walls where the structure is exposed to outdoor elements.

The problem with penetrating damp is that it not only affects the appearance of your home but also its structural integrity. Over time, continuous exposure to moisture can weaken the building materials, making them susceptible to decay. Furthermore, the damp conditions create an ideal breeding ground for mould and mildew, which can contribute to a range of health problems if not addressed promptly.

How to Identify Penetrating Damp

brown and gray brick wallby Jon Moore

The most obvious sign of penetrating damp is the presence of damp patches on walls or ceilings. These patches may appear wet or discoloured and can often be accompanied by a musty smell, indicating that moisture has been present for some time. In severe cases, mould growth may also be present, which can appear as black, green, or white patches on surfaces.

You may notice other symptoms such as peeling paint or wallpaper, as well as blistering or crumbling plaster. These signs are not only unsightly but also a signal that the property’s exterior defense against moisture has been compromised. If left untreated, penetrating damp can cause serious damage to your home’s structure and lead to health issues, particularly for individuals with asthma or allergies.

Dealing with Penetrating Damp

If you suspect that your home may have a problem with penetrating damp, it’s important to take action as soon as possible. Ignoring the issue will only lead to greater damage and potentially more expensive repairs in the future. Here are some steps you can take to deal with the issue:

1. Identify the Source of the Water

Before you can effectively deal with penetrating damp, you need to identify the source of the water. This could be a leaky roof, a damaged gutter, or even a cracked wall. Inspect the exterior of your home and look for any signs of damage or areas where water could be entering.

It’s also important to consider less obvious sources such as internal plumbing leaks or condensation build-up, which can contribute to the problem. Paying attention to when and where the damp appears can provide clues; for instance, dampness that worsens after rain is likely due to external issues, while constant dampness might suggest an internal problem.

2. Fix the Source of the Water

Once you’ve identified the source of the water, it’s important to repair it as soon as possible. If you are in rented accommodation, you should report any issues to your landlord as soon as possible, giving them an opportunity to correct the problem on your behalf, as it their responsibility to ensure your home is safe and secure.

3. Damp Proofing

Damp proofing is the process of applying a waterproofing material to the external walls of your home. This can help prevent water from penetrating the walls and entering your home. There are various damp proofing products available, such as paints, sprays, and membranes. Consult a professional to determine which type of damp proofing is best suited for your home.

The effectiveness of damp proofing can vary based on the type and extent of the damp issue, as well as the materials used in the construction of your home. It’s important to select a product that provides a robust barrier against moisture while also allowing the walls to breathe, preventing trapped moisture and ensuring the longevity of the treatment.

4. Moisture Control

In addition to damp proofing, it’s important to control the moisture levels in your home. This can be achieved by using dehumidifiers or fans to help remove excess moisture from the air. It’s also important to properly ventilate your home, especially in areas prone to dampness, such as bathrooms and kitchens. By controlling the moisture levels in your home, you can help prevent the growth of mould and other harmful bacteria.

Good ventilation is not only about having the right equipment but also about using it effectively. Ensure that extractor fans are turned on during and after activities that produce a lot of moisture, like cooking or showering. Regularly opening windows can also aid in circulating fresh air and reducing humidity levels, particularly during dry, sunny days when outdoor air can help to naturally dry out damp areas.

5. Repair Any Damage

Structural damageby Pawel Czerwinski (https://unsplash.com/@pawel_czerwinski)

Penetrating damp can cause serious damage to your home’s structure, such as rotting of wood and deterioration of masonry. It’s important to repair any damage caused by the dampness as soon as possible to prevent further structural issues. Consult a professional to help you assess the damage and determine the best course of action for repairs.

6. Treat Mould Growth

Mould growth is a common side effect of penetrating damp and can cause health issues, especially for those with respiratory problems. If you notice mould growth in your home, it’s important to treat it immediately. There are various products available for mould removal, but it’s best to consult a professional to ensure that the mould is properly removed and doesn’t return.

In treating mould, safety should be a top priority. Wear protective gear such as gloves, goggles, and a mask to avoid inhaling spores. After removing the mould, it’s imperative to address the underlying dampness issue to prevent the mould from returning. Regular cleaning and monitoring of the affected areas can also help to keep mould at bay.

Prevention is Key

Preventionby Ashkan Forouzani (https://unsplash.com/@ashkfor121)

The best way to deal with penetrating damp is to prevent it from occurring in the first place. Here are some preventative measures you can take to help keep your home dry and free from dampness:

  • Regularly inspect your home for signs of damage or areas where water could enter
  • Keep gutters and downspouts clear of debris to ensure proper drainage
  • Properly seal any cracks or gaps in your walls or roof
  • Keep your home well-ventilated to help control moisture levels
  • Monitor your home’s humidity levels and use dehumidifiers if necessary

In addition to these measures, it’s wise to maintain a regular maintenance schedule for your property. This includes checking the roofing, plumbing, and drainage systems at least annually to catch any potential issues early. Landscaping can also play a role; make sure the ground slopes away from your home to prevent water from pooling around the foundations.

Conclusion

Dealing with penetrating damp can be a daunting task, but by taking the necessary steps, you can effectively prevent and treat this common issue. Remember to always fix the source of the water first, damp proof your home, and control moisture levels. By doing so, you can protect your home from structural damage and keep your family healthy and safe.

If you are a tenant and your landlord is neglecting their responsibilities to keep your home safe and free from damp and mould, contact us today on 0333 360 1724 or fill in our online form to see if we can help.

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