Rising damp showing on interior wall

How To Treat Rising Damp?

One of the most common methods to treat rising damp is the installation of a remedial damp proof course. Rising damp is a particular problem in older buildings where the damp proof course (DPC) has become damaged or when the ground level around the house has been raised by the addition of a path or driveway.

Rising damp is the process of water rising up the wall, just like the way water is soaked up by a sponge. This water will contain salts that are deposited onto the wall. Other building materials that are near the affected wall, such as skirting boards, joists and plasterwork will absorb the moisture from the ground. This can result in problems such as wet rot.

One of the most important steps in treating rising damp is the identification stage. This is why it is important to contact a fully qualified surveyor so a full rising damp inspection and treatment can be carried out.


How Is Rising Damp Caused?

To understand how to treat rising damp you must first understand what the causes are. If your property is not protected by a rising damp barrier (otherwise known as a damp proof course or DPC) then rising damp is more than likely going to occur at some point.

Rising damp occurs by drawing moisture from the ground via capillary action. The moisture will only reach a certain height of approx. 1 meter.

Salt deposits may be found higher in the wall, these are as a result of the use of paints, vinyl wallpapers and tanking systems.

Rising damp can occur as a result of groundwater finding its way into your home through brickwork or stonework.

This groundwater contains soluble salts, which are deposited on the interior and exterior walls of the property. In turn, these salts draw moisture from the atmosphere giving a permanently damp feeling to the wall.

Most groundwater contains small quantities of salts which are, in most cases, at an acceptable level.

To find out more about the causes of rising damp then visit our what causes rising damp? page.

Request a survey

Worried about Rising Damp? Call 0800 288 8660 or

How to Identify Rising Damp?

surveyor using damp meter to detector damp

There are certain checks that can be made by yourself without the assistance of a damp surveyor.

The simple procedure of looking and running your hands around the suspected rising damp areas will allow you to identify a rising damp problem. The typical signs for spotting rising damp include the following:

  • Horizontal brown or discloured marks to be seen up to 1 meter in height on interior walls. These will be damp to touch and otherwise known as ‘Tide Marks’.
  • Plaster will bubble and peel away from the interior walls.
  • Wooden beading and skirting boards will become brittle and eventually show signs of deterioration.
  • Mould on walls
  • Walls will feel damp when touched

If you are still unsure about identifying the signs of rising damp then get in touch with Timberwise where our expert team of surveyors can provide you with the right treatments to eradicate any damp problems you may have. Call 0800 288 8660 or request a survey online.

You can find more information about identifying rising damp by visiting our how to identify rising damp page.

How to Treat Rising Damp

One of the main steps to treating rising damp is identifying the source of the damp problem. Carrying out quick fixes will only cover up the issue for a short term period and therefore make it more expensive for you to solve in the long term.

One solution for treating rising damp at your property is the installation of a damp proof course. For a professional rising damp treatment service, Timberwise will provide an experienced surveyor who will visit your property and outline potential damp proofing treatments and costs.

Rising damp treatment being applied

Below are the methods that are used to treat rising damp from your property:

Rising Damp Survey

The first step to treating rising damp is to have a survey carried out by a qualified surveyor. Condensation, penetrating damp and rising damp all have similar symptoms such as black mould, damp patches on walls, and musty smells. This makes it easy for the untrained eye to misdiagnose rising damp for other types of damp.

It is important to have a surveyor who has the experience and knowledge of damp to inspect the property for all damp issues and provide the best rising damp treatments for your property.

DryTek Damp Proofing Injection Cream

The DryTek Damp Proofing System is a unique product to Timberwise, this damp proof injection cream is applied into old brick and stonework structures as well as into granite boulder walls.

This creates a barrier that moisture cannot pass, the cream will tend to fill any fine cracks and this forms a solid plug. This product comes complete with a 20 year guarantee giving complete peace of mind.

Damp Proof Course

Most modern properties are often built with a damp proof course installed, usually in the form of an impermeable plastic membrane, which is placed along a mortar line near the ground.

Older properties, however, are often built with no damp-proof course, or the original course may have failed over time.

If your property is in need of a damp-proof course there are a number of methods that our team of qualified technicians can implement.

We provide a variety of damp proofing systems to suit different property requirements, for example; a property constructed with stone may require an electro-osmosis system, whereas a property with brickwork construction may require a pressure injection system.

Injection Mortar

This grouting type of material is ideal for many applications, particularly where a good sized bedjoint is in evidence. The damp proofing agent is carried into the porous mortar beds and rubble by the rising damp, where it crystallises to form an impermeable barrier to control subsequent water rise.

Electro Osmosis System

The Electro-Osmosis System introduces a very small electric current into the wall just above the ground level. The current repels rising moisture back down the wall. As long as the charge is maintained the walls will remain dry and free of damp.

For more information visit the Electro Osmotic Damp Proofing page.

Request a survey

Worried about Rising Damp? Call 0800 288 8660 or

Replastering After Rising Damp Treatment

The technician will ensure that before the damp proof cream is applied into the walls of the building that any salt contaminated plaster is removed. After the damp proof injection cream has been applied then the replastering of the walls can be carried out. After the walls have been replastered then you can decorate the walls as you wish.

What is the Cost Of Rising Damp Treatment?

“How much does rising damp treatment cost?” It is perhaps one of the most frequently asked questions by homeowners with a damp issue.  The cost of damp proofing is subjective to a number of variables including; property size, location and accessibility.

The type of damp proofing system to be installed also has an effect on cost. Replacing an existing damaged physical damp proof course with a new one is a very difficult process that would almost certainly involve large amounts of structural work taking place – for that reason, the most common and cost effective treatment for rising damp is to install what is known as a chemical damp proof course or dependent on the situation an electro osmotic damp proofing system.

Are Rising Damp Treatments Covered by a Guarantee?

There are a number of rising damp treatments that can be carried out and whichever one is used at your property comes complete with a long term guarantee.

This provides you with the reassurance that if in the unlikely event that something goes wrong with the treatment or rising damp starts to re-appear, then we will be on hand to fix the problem.

What Happens If Rising Damp Is Left Untreated?

Leaving rising damp left untreated

If rising damp is left untreated then it can lead to serious issues with the structural integrity of your property. If left, the rising damp problem will worsen potentially causing further damp related damage. This will ultimately then lead to increased costs to rectify the problem What could have been a relatively small damp proofing job could become something much larger.

Any decoration that you have added to your home, such as wallpapering and plastering, will deteriorate increasing the costs further. If you are in the process of selling your home a damp issue makes the process longer for you and may delay the sale.

Can Rising Damp Cause Health Issues?

This question is one that is asked by many customers. In many cases if treated in good time then damp won’t be a concern for your health.

If left unchecked it can lead to other issues forming, such as mould, that can have implications on health. Having a damp smell in your property isn’t pleasing to live with but the health risks aren’t a real issue as long as the damp problem is resolved.

How to Prevent Rising Damp

Most of the modern buildings in the UK have a physical damp proof course which can act as a barrier against water penetration. However, there are some cases where there are defects that can affect the building and damp can then become a problem. All the external masonry, guttering and rainwater pipes should be properly maintained to ensure that penetrating damp does not become an issue.

There should also be regular checks for signs of dampness on internal surfaces on the ground floor surfaces and skirting boards.

Checks should also be made to ensure that external roofs, gutters and roof pipes are free from debris. All air vents must be free from obstruction to allow air to flow freely out of the building. This is key to maintaining a damp free environment.

Need the Assistance of a Rising Damp Specialist?

The age-old problem of damp is not an issue for our rising damp specialists. From seeing the initial tell tales signs of damp patches and stains that appear on the walls to the salts forming on the brickwork outside, property owners know there is only one name they need to know to treat their rising damp problems. Timberwise can help! Need a survey? Find out how our Timberwise surveyors carry out a damp proofing survey.

With over 50 years of experience in the installation of damp proof courses and having eradicated rising damp problems in thousands of homes, you can trust Timberwise’s damp proofing solutions to remove your damp problem for good.

If you suspect damp may be occurring in your property then call 0800 288 8660 or request a property survey online where our team will be able to help with any damp problems that you may have.

Utilising the most up-to-date methods, Timberwise offers a long-term guarantee to give you complete peace of mind that your rising damp will be a thing of the past.