Rising damp Treatment & Services

At Advanced Damp, we combine years of expertise with cutting-edge techniques to address and eliminate rising damp, ensuring your property remains dry, healthy, and comfortable. 

Rising damp can be a persistent issue, leading to structural damage, unsightly marks, and unhealthy living conditions. Our proven treatment methods not only halt the progress of rising damp but also prevent its recurrence, safeguarding the integrity of your home and the well-being of your family. Trust us to restore your peace of mind and the value of your property with our effective, long-lasting solutions.

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What is Rising damp?

Over the years, we’ve discovered that most people have no idea what rising damp is, despite them hearing a lot about it. It is a form of damp affecting walls and buildings. It generally occurs when moisture is soaked up from the ground and gradually travels up the walls. Since the water is mainly groundwater, it will contain salt, which travels with it through the walls.

The affected wall is just one area this can affect because the damp can just as easily travel through other materials such as plasterwork and even the timber in the skirtings, floorboards and joists. As the water gets absorbed into these materials, it leads to rot, especially in areas where wood is used.

Most times, the first signs of rising damp can be seen via the internal walls of a structure. The first things to start deteriorating are the wallpaper and plaster, which starts to get loose. If you’ve painted the walls, then the paint starts peeling off. You may also experience that characteristic rising damp smell, which you’d know if you’ve smelt it before.

As the paint starts to peel off, you’ll see a visible stain on the wall, a so-called tide mark forms where the groundwater has penetrated. In addition, you’ll see signs of salts around the surface. This is a sure sign of rising damp and often what causes paints and plaster work to peel off. 

removing damp plaster

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Advanced Damp offer Specialist rising damp treatment and comprehensive damp protection for your home!

experienced rising damp experts

What causes rising damp?

There can be multiple reasons for rising damp in your structure. Most buildings today have a barrier installed, especially at the ground level, to prevent water from rising up. This so-called damp proof course or DPC is made from water-repelling materials like bitumen, slate and plastic.

The materials used as DPC may vary depending on when the structure was built. However, it isn’t entirely unheard of for the DPC to fail. Older homes may not have a DPC layer, evident from chronic rising damp issues, because there is nothing to prevent water from rising up the wall. 

At times the DPC may continue to be intact, but it could have been bridged by penetrating damp. So, the damp bypasses the DPC from the ground and travels up the walls. Usually, this is caused by a construction fault.

Common reasons for damp bypassing the DPC include:

·      The existence of debris in the subfloor and wall cavity

·      Rising external ground levels above the DPC layer

·      The use of external renders and internal renders which overlap the DPC

·      Using the wrong insulation material in the gaps

·      Having intersecting masonry structures

plastering after rising damp

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Advanced Damp offer Specialist rising damp treatment and comprehensive damp protection for your home!

damp proofing plastering

Internal walls damaged by rising damp

The internal walls are one of the first places most people will notice rising damp. The most prominent sign is the tide mark on the interior walls, up to where the water has reached. Usually, these tide marks stains will appear around two meters above the skirting board. However, there are rare instances where water would rise higher than this point. 

Signs of rising damp can also be seen on external walls. Though it is only that most people may not notice it right away.

The height at which the water reaches depends on multiple factors. Some of the factors include the pore structure of the mortar and bricks, as well as the rate of evaporation. Also, masonry with a high number of fine pores helps water to rise compared to masonry with fewer pores. The issue of rising damp can happen for up to 1.5 meters and, in rare instances, higher. 

Since water from the ground will often carry salts, these are left behind on the wall when water evaporates. The salts are what cause the paint and wallpaper to bubble. What’s left behind is a deposit of fluffy mass which is salt. However, there are two primary types of salts, sulphates, which lead to crusty patches, and then there are hygroscopic salts called chlorides and nitrates. The problem with hygroscopic salts is that they make matters worse by drawing in more moisture. Thus the issue needs to be addressed right away.

Treating rising damp

Treating rising camp can be tricky, but using a damp proofing injection cream tube is the prevailing method. 

The remedial damp-proof cream is then injected or sometimes pumped into holes drilled into the mortar course. After the cream has been applied, it will revert to liquid form. In this form, the liquid effectively penetrates the brick, ensuring complete absorption of the formula. As the cream continues to cure, it will create a vital water-repelling barrier.

Sometimes installing a damp-proof membrane is a better option. This then works as a damp-proof course. The process involved is much more complex and often requires removing every brick along the mortar course and installing a physical damp-proof membrane.  

When there is evidence of rising damp, the wallpaper and plaster need to be removed, so you’re down to the substrate. Then the waterproofing needs to be applied to the external wall.

You want to ensure that the existing DPC has yet to be bridged before injecting fresh remedial damp-proof course. The key to treating rising damp is to carry out the damp injection process accurately to avoid further issues.

Treating rising damp on internal walls requires experience and knowledge to ensure that DPC is correctly installed, because if not it will not be effective.

rising damp internal wall damage. Wall is showing flaking paint and bad defects
rising damp treatment

Rising Damp FAQs

If you're dealing with rising damp in your home, you probably have a lot of questions. Our FAQs are here to help! We've gathered some of the most common questions about rising damp and provided straightforward answers to help you understand the causes, effects, and solutions for this frustrating problem. Whether you're a homeowner, a landlord, or a tenant, our FAQs can help you get the information you need to deal with rising damp effectively.

  • Are there any health risks associated with rising damp?

    Yes, there are several health risks associated with rising damp. Rising damp is a condition where moisture from the ground travels up through the walls of a building due to capillary action. This can lead to respiratory problems, allergies and asthma.
  • What are the best treatment options for rising damp?

    The best treatment options for rising damp depend on the specific situation and the extent of the problem. However, some common and effective treatments are damp proof course, damp proof injection, improving ventilation, repairing the building, internal and external waterproofing, installing a French drain plastering
  • How much does it typically cost to fix rising damp problems?

    The cost of fixing rising damp problems can vary significantly depending on the issue's extent, the property's size, the treatment method used, and local labour rates. It is good to get an assessment from the damp specialists and ask for a quote depending on the specific situation.

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