Damp Proofing Costs& Free Quotes

Dampness in the walls and ceiling is usually caused by excess moisture mostly by leaking pipes, rain seeping because of damaged roof or window frames, or rising damp. Dampness does not occur overnight; it is a process that takes time to develop and mostly remain unnoticed until it spreads widely. This problem needs to be addressed quickly to prevent it from compromising the structural integrity of your house. This means that you need to call an expert to identify the root cause of the problem and provide an excellent plan to eliminate the problem.

A common mistake that most homeowners make is treating the symptoms but not tackling the root cause of the problem. Treating symptoms will only provide temporary relief but will not solve the problem. The issue will keep coming back, and over time, it can comprise the structure of your home, putting your valuable possessions at risk of getting damaged.

If dampness is visible on the interior wall, then the most likely culprit is the rising damp. This problem occurs when water from the ground seeps through walls then travels upwards in capillary action until it reaches the interior walls. The results are peeling of the paint and dampness like marks on the walls.

How to determine whether rising damp is present in your home

Rising damp is a problem that occurs over time. Main signs that indicate the presence of rising damp in your home include:

  • Visible white salt within the plaster
  • Brown or yellowish tide mark stains on the skirting boards
  • Sign of rooting on the flooring
  • Peeling wallpaper or paint
  • Damp and musty smell
  • Black mould

If damp patches are 1.2 meters up on the wall or ceiling, then the chances are that the leaks are coming from the roof. You should call a roofing expert to inspect the roof.

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Causes of rising damp

Rising damp can be fixed if the root cause is identified. Below are potential causes of rising damp.

Leaking damp proof coursing (DPC)

The first place that you should check when you notice the dampness on the wall is the damp proof coursing located on the outside wall of your home. The DPC plays a crucial role in preventing moisture from rising through capillary action to the interior walls. So if you notice moister on the interior walls, then chances are that the DPC is compromised or there is no DPC at all.

Presence of bridging

Any substance that comes in contact with your home's wall at a level that is slightly higher than the DPC can create a bridge that allows water to seep into the exterior walls easily. It is, therefore, essential to inspect the DPC to know if it is above the ground. If not, then you should have it fixed as soon as possible.

Problem with your neighbour’s DPC

This frequently occurs for people who reside in a semi-detached property. Bridging can arise if your neighbor’s DPC layer is not above the ground or not at the same level as your home's DPC.

Internal bridging

Rising damp can also occur as a result of internal bridging. This problem occurs if debris were not appropriately cleared inside the wall cavities during construction enabling moisture to bypass the DPC layer and seep into your house. Call an expert to inspect your home to check if there is internal bridging.

How to fix rising damp

Rising damp can be fixed by employing a few simple strategies. However, DIY is not recommended because it only focuses on the symptoms but does not address the root cause of the problem. The best route to take is seeking help from experts, as this will guarantee that the problem will be fixed once and for all. Besides, being experts, they have the right tools that enable them to identify the root of the problem and fix it accurately.

What is the average cost of damp proofing?

This question does not have a definite answer because it depends on factors including the severity of the problem, the size of your property, and the cause of the problem.

The location also plays a big part in determining how much you will pay. For instance, if you reside in central London, then you can end up paying 20% higher than the average market price.

The cause of the problem will also affect the price. For instance, if a rising damp occurred because the ground level is higher than the DPC, then you will have to pay more because some excavation must be done to fix the problem. The cost can double if concrete paving slabs are laid to prevent water from seeping through the wall.

The average cost of fixing a single wall on a terraced property is about £180, while fixing the entire will home cost around £300 to £320.

Fixing a single wall on a terraced semi-detached house is around £250 and about £550 to fix the entire house. On the other hand, fixing a single wall of a detached home can cost around £400 and approximately £1,500 to repair the whole household.

If a house does not have a DPC layer to prevent water seepage, a chemical DPC will be applied at an additional cost for material used and labour.

Homeowners should expect to part ways with around £250 for a single wall and about £ 400 to fix the entire home.

For semi-detached property, prices range from £380 for a single wall and £850 for the entire property.

The cost can go as high as £700 for fixing a single wall of the detached property and up to £2200 to fix the entire home.

Reasons why rising damp should not be ignored

Many homeowners tend to ignore signs of rising damp and only take action when things get serious. Ignoring the warnings of rising damp or trying to cover them up with a fresh coat of paint is not a wise idea. Remember that postponing the problem is not fixing it and will only make things worse because it will quickly spread to other areas.

If the rising dump is ignored for long, moisture will go up through capillary action and will eventually reach the brickwork and also penetrate through any plaster and wood that cross its paths. Over time, it can damage the structural integrity of your house and cost you a lot of money to fix it.

Additionally, ignoring the rising dump may also result in the development of black mold in your home. Black mould causes not only severe health issues like asthma but also cause massive damage to property.

If you have noticed signs of rising damp on your property, give us a call today or fill our contact form. We will link you with experts who are knowledgeable and experienced in fixing the rising damp problem. All experts that we have in our database are accredited and have been prescreened manually by our competent team. A free price estimate is given upon request. Don’t wait, fill our contact form and let us link you with the best experts in town who will deliver quality work that you will be proud of.

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Complete Tradesman provides cost guides and free quotes for all UK home improvement projects.

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