A damp affected wall

How Long Does Damp Take To Dry?

Key Takeaways

Drying time Varies: How long it takes for damp to dry is not fixed and depends on various factors, including the nature of the surface, the underlying cause, the extent of damp, weather conditions, and more. Drying Damp Walls: Damp walls can dry, but the process is influenced by factors like wetness degree, plaster type, temperature, humidity, and the air flow and circulation. Complete drying may take weeks or months, and addressing the root cause is crucial for a sustainable solution. Factors Influencing Drying: The amount of damp affects drying time; more water extends the process. The type of surface or plaster, temperature, humidity, airflow, and thickness impact drying.   The answer to the question – "How long does it take to dry a damp wall?" is not a straightforward one. A lot of factors play out when it comes to drying damp on walls, ceilings, floors, or other areas of the house. These factors might include the nature of the surface on which the damp has occurred, the underlying cause has been treated or not, the extent of the damp issue, weather conditions, the temperature of the area which is damp, the type of equipment that is being used during the drying process, etc. Therefore, there are a lot of things – some smaller ones and some bigger ones that need to be taken into consideration during the damp drying process. But how does that all work? Well, let's find out! A damp affected basement getting a damp drying procedure  

Is it Possible to Dry Damp Walls?

Damp walls can dry, but the process is controlled by a variety of factors, such as the degree of wetness, the kind of plaster used, ambient temperature and humidity levels, and the quantity of moist air in circulation inside the affected space. Complete drying of wet materials may take several weeks or even months. However, it is critical to note that depending just on the natural drying process may be insufficient since treating the underlying source of moisture becomes critical to avoiding potential issues in the future. Furthermore, identifying and resolving the fundamental cause requires a thorough understanding of elements such as inadequate ventilation, pipe leaks, and condensation, all of which contribute to the persistence of damp conditions. Taking preemptive actions to address these underlying difficulties not only expedites the damp walls' drying process but also reduces the chance of recurring problems, resulting in a more sustainable and long-lasting solution. A damp professional checking for humidity level in the house  

The Drying of Damp Depends on Various Factors

Damp plaster drying time can be influenced by several common factors, including:

How Much Damp is it?

More water in the plaster means a longer drying time. Slightly damp plaster dries faster than fully saturated wet plaster.

What is the Type of Surface or Plaster?

Plasters dry at varying rates; lime plaster, for instance, dries more slowly than gypsum plaster.

What's the Temperature of the Affected Area?

Warmer temperatures accelerate drying, and cooler temperatures decelerate it. Therefore, maintaining good ventilation in the room during drying is crucial to avoid condensation on the plaster.

What are the Humidity Levels?

Humidity affects drying time. High humidity slows it down, and low moisture speeds it up. To expedite drying, use a dehumidifier or fans to lower humidity levels.

Is the Airflow Good?

Adequate airflow speeds up the drying process by circulating air around damp plaster. Ensure the room is well-ventilated, and use fans to enhance airflow while drying.

What is the Thickness of the Surface?

Thicker plaster layers need more time to dry than thinner ones. Make sure the plaster dries uniformly to avoid shrinkage or cracks.   A paint professional treating a damp affected wall

How to Dry Damp Walls?

First, Get Rid of the Cause

Once you have an official damp survey, you may begin working through the therapy procedure. When you choose Damp Surveyors Ltd., they will do a thorough site survey before providing you with a complete future course of action. The survey results help to clarify the complexities of the situation, providing insights into the issue's multiple characters and prescribing a sophisticated plan for its resolution. Within this sophisticated framework, considerations may mandate the renovation or replacement of the Damp Proof Course (DPC) in cases where it has been compromised. Alternatively, the need may need the replacement of specific wood components within the flooring structure due to water infiltration and the consequent appearance of dry rot and/or wet rot. In severe cases, when widespread rising damp saturates the walls, causing damage to the brickwork, plaster extraction and replacement may be necessary. The extent of inflicted harm varies by property, as these cases require the orchestration of a more sophisticated and thorough plan to deal with far graver concerns.

Circulate Air around the Affected Surface

Next, use oscillating fans in conjunction with strategically opened windows or doors to quickly relieve excess moisture from the air. If the afflicted area lacks accessible apertures, try installing a specialized dehumidifier. This intelligent technology will efficiently collect moisture from the surrounding air, reducing its tendency to gather on the walls and worsen the existing problem.

Use Fans

If a specific portion of the wall has been wet, use standard electric fans to help the drying process. Position one or more fans strategically near the dampened area, ensuring that they are set to work at their maximum speed. By doing so, you maximize the evacuation of wet air and actively accelerate the desiccation of afflicted regions.

Use Moisture Absorbers

To aid the moisture removal process within a restricted area, such as a closet, it is advised to strategically arrange items having moisture-absorbing capabilities, popularly referred to as desiccants, in close proximity to the inner walls of same room. This strategic positioning seeks to improve the extraction of surplus water vapour, contributing to a faster and more effective drying process.

Use a Dehumidifier

Purchase a high-capacity dehumidifier. Follow the manufacturer's detailed instructions to seamlessly integrate the gadget into the specified area containing the moisture-laden wall. Before beginning the operating sequence of the aforementioned dehumidification, ensure that all access points, including doors and windows inside the defined space, are sealed.

Remove Wall Coverings

Wall coverings such as wallpaper and fabric obstruct the typical passage of dry air through to the wall, resulting in a longer drying time. Furthermore, soaked wall coverings have the potential to act as breeding grounds for dangerous mould and mildew, raising safety issues.

Remove Damaged Materials

If damp has injured metal stud walls, causing paint or wallpaper to peel, remove them to avoid further damage and aid in drying. Remove loose debris using a scraper or putty knife while wearing gloves and a mask to guard against mould or pollutants.

Apply Damp-proofing Solution

Use a specific damp-proofing solution to form an impermeable barrier, effectively blocking the penetration of moisture and preventing the return of damp and mould development in the most affected areas. A professional checking the humidity level in a house  

Prevent Damp Issues

Keeping your home's structure firm and safeguarding against further mould growth and health risks requires addressing damp in walls. Follow these steps to prevent wall damp:

Maintain Proper Ventilation

Ensure good ventilation to avoid damp walls. Use exhaust fans in the kitchen and bathroom, and open windows regularly for better airflow.

Insulate the Walls

Insulating walls prevent damp by minimizing condensation and moisture accumulation.

Fix any Structural Leaks

Inspect and promptly fix any leaks in pipes, windows, or roofs to prevent damp.

Dehumidifier Can Help

A dehumidifier helps lower humidity and prevents a rising dampness in your home if the air is too humid.


If standing water in your home is often wet or rainy, you might need to waterproof the walls to stop water from getting in. House owner using a dehumidifier to get rid of damp walls  

Call Damp Survey Professionals

If significant water damage makes wall drying difficult, or if you prefer not to handle the process yourself, hiring a professional is strongly advised. The financial expenditure is determined by your geographical location and the severity of the damage, with the majority of independent damp surveyors, such as Damp Surveyors Ltd., providing a thorough evaluation and future course of action. So, call them right away! Presence of mould on a wall  

How Long Does a Damp wall Take to Dry?

The time it takes for wet walls to dry varies depending on the degree of the damage, the wall's individual qualities, and the underlying issue. This timescale is flexible, ranging from a few days to many weeks. It is critical to detect moist walls early on and begin the drying process immediately. Failure to do so may result in the growth of mould, which poses health hazards and contributes to skin and respiratory issues. As a result, preventing these adverse outcomes requires aggressive and early moisture mitigation.  

The Bottom Line

Look, every damp issue is different. You don't know how much damage has been done or how much the extent of the problem is. Therefore, it becomes even more challenging to estimate the right amount of time that it will take to get rid of wetness and eventually dry the surface. There are innovative equipment that can help out during these times of crisis. Instruments like moisture meters are used by professionals that allow monitoring of the level of wetness and, therefore, give a rough idea of how much time it will take to wrap everything up. On an ending note, it doesn't matter what the extent of the problem is; make sure that you are acting fast because as soon as the water seeps in, the damage starts happening. But make sure that your fast approach doesn't turn into hastening and that the quality of the process is not suffering.  

How long does wet walls take to dry?

How long it takes for damp to dry out depends on factors such as the extent of moisture, the materials involved, and environmental conditions. Generally, it may take several days to a few weeks for damp areas to dry completely. Adequate ventilation and temperature control can expedite the drying process.

Can damp dry out on its own?

Damp can dry out on its own to some extent, primarily if the source of moisture is eliminated and proper ventilation is maintained. However, relying solely on natural drying may be slow and may not be effective in more severe cases. It's advisable to actively address the root cause of damp and implement drying techniques for a faster and more thorough resolution.

How do you dry damp walls fast?

To dry damp walls quickly, it is crucial to identify and eliminate the source of moisture, whether it be a leak, condensation, or other issues. Improving ventilation by using fans or opening windows can enhance air circulation, facilitating faster drying. Additionally, employing dehumidifiers and absorbent materials, such as towels or desiccants, can help absorb excess moisture from the walls and accelerate the drying process.

Does putting the heating on help damp?

Putting the heating on can indeed help with damp issues, as warmth promotes evaporation and aids in drying. Heating helps to increase the temperature in the affected area, reducing humidity and facilitating the drying of damp surfaces. Combining heating with proper ventilation is an effective strategy to address damp problems, but it's essential to identify and address the root cause of the damp problem to prevent recurrence.

Table of Contents

Picture of Sam Fitzgerald – CSRT Damp Surveyor

Sam Fitzgerald – CSRT Damp Surveyor

Author – CSRT Damp Surveyor
Sam is a highly qualified and seasoned damp surveyor with over ten years of specialised experience. With a strong academic foundation in building surveying and numerous professional certifications, Sam has established himself as an authority in the field of damp diagnosis and remediation.

At Damp Surveyors Ltd, Sam applies his extensive knowledge to help homeowners across the UK address and solve their damp issues effectively. His approach combines cutting-edge techniques with a commitment to honest, client-focused service, ensuring that every survey and recommendation is tailored to the specific needs of the property.

As a thought leader, Sam’s insights into damp prevention and treatment have been featured in industry publications, underscoring his role as a trusted expert dedicated to maintaining the integrity and comfort of your home.

Testing device for measuring dampness in a house


At Damp Surveyors Ltd, we stand out as your premier choice for damp survey services in the UK. Our commitment to excellence and customer satisfaction sets us apart. Here’s why you should choose us:

  • Exclusive 3 Free Quotes: We offer a one-of-a-kind optional service where you not only get our top-notch damp survey but also receive 3 free quotes from vetted local companies, giving you peace of mind by saving you thousands on getting the most competitive quotes, and also time researching and contacting other reputable companies.
  • Knowledge and Experience: We provide unmatched knowledge to every survey we conduct thanks to our team of seasoned professionals and years of industry experience. This guarantees accurate assessments and practical solutions.
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Choose Damp Surveyors Ltd as your reliable partner for all-inclusive survey needs. Our top concerns are the health and safety of your property, and we are committed to providing outcomes you can trust.

Damp surveyor explaining house survey to prospect buyer

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