Top Signs of Home Dampness & How to Fix Them | Waterproofing Guide 2025

Nowadays, health has become a priority for everyone. But have you ever thought about the health of your home? Yes, you read it right! Home health!

Our beautiful and most comfortable place also has some indicators that represent the health of our home. Due to constant exposure to biological agents in the environment, the indoors are significant health hazards that cause a wide range of health issues among family members. Home dampness is a strong indicator of the risk of asthma and other respiratory problems.

Home Dampness is caused due to inadequate ventilation, structural failures, and thermal comfort. Without proper ventilation, the home doesn't get good air quality, humidity, and condensation. It leads to home dampness, which is an injury to health, especially in this pandemic.

Even the "World Health Organization" has collected and reviewed the policies to address the health indicators of dampness in your home. It is equally essential to protect your health and your home atmosphere. As people are spending more time at home, it is necessary to protect ourselves from outside viruses and inside viruses.

Many people don't even know whether their home is damp or not. Isn't it? Then, let us first understand the signs of dampness in the house.

Signs of Home Dampness

Some common signs of dampness in the house. Those are:

1.  You see the mold or mildew growing in areas like walls, at the floor and even at the ceiling.

2.  May feel a sewer smell while moving from one room to the other in the house.

3.  When you touch walls, floors, or ceilings that feel cold or wet.

4.  They observed the stains or discoloration of the walls or plaster by painting them black in some parts.

5.  The wallpaper of the room is peeling off.

6.  You might notice condensation on windows.

7.  The white, powdery salt-like substances appeared on the walls.

These are the basic signs of home dampness that you can see while roaming around at your place. However, if your home has dampness, you can find unwanted moisture in walls, ceilings, and floors. 

Now, let's understand, what are the types of dampness? 

Types of Dampness

There are typically three types of home dampness, and their causes, identification and prevention are different. 

1. Penetrating Damp

Penetrating Damp is caused by water leakage through walls. Broken or blocked rain gutters cause it at the roof, damaged bricks, cracks in external walls, leaking pipes, cracked roof tiles, and many more.

The walls will appear in damp patches, mainly in windy and rainy weather, disappearing once the storm passes. The walls, paint, and plaster are deteriorating, and it smells like mold.

Is your home seeing these signs? Then, it's time to fix it and again freshen up your home.

Firstly, fix and clear the broken gutters at the terrace and replace the broken roof tiles that allow water to pass through it. 20MCC has the best waterproofing chemicals that work best for your home's dampness. We have Nanosilwhich is a solvent-free and silicon-based water repellent that works effectively to protect your wooden roof furniture from leakage.

2. Rising Damp

Water from the ground moves up with the help of capillary actions in the house walls is known as rising dampness. It is caused due to the structural issues of the building. To protect the house from rising dampness, building material suppliers use the damp proof membrane underneath the concrete floor to save the home from groundwater growing.

These rising damps are mostly visible at lower parts of walls which rise upwards. Even you see patches on the floor and some damaged skirting boards.

You are most likely to consult with a waterproofing expert for rising dampness. Our 20MCC waterproofing experts first visit your place and adequately inspect the location. Then, give you the proper solution that surely helps your home from damping.

3. Condensation

When moist air comes in contact with cold surfaces like walls, and thus, it can't hold the moisture, which leads to drops of water on the walls and it causes mold. It is known as condensation dampness. It is caused due to the lack of ventilation, cold surfaces, and the lack of central heating that leads moist air to sit and condense.

The condensation is identified by seeing on windows or walls, water droplets, dampness on walls and ceilings, and damp smell.

20MCC has the best dampness products and waterproofing solutions.Tigersilis one of the best waterproofing solutions for terrace leakage, paint peel-off, wall dampness, and so on. If you want to knowhow you can fix the damp walls, do check this blog. 

Top 7 Signs of Dampness in Your House 

Keeping in mind the unusual smell or visual change on your walls? These may be an initial moisture warning in the walls of the house. Quickly spotting these signs can prevent severe moisture damage to your home.

• Peeling wall paint- One of the most visible signs of moisture in the building walls is flaking or bubbling paint. It indicates moisture stuck below the surface, often due to leaks or poor ventilation.
  
  

• Damp smells indoors- The rooms are a common symptom of a mastic, soil smell. This smell is caused by the development of mold and mildew, which is constantly caused by moisture.
  
  

• Mould or fungal patches- They appear as black, green or brown spots, especially in corners or in bad ventilated places such as bathrooms. It is a red flag for the bathroom walls and moisture in the ceiling.
  
  

• Cracks in walls or ceiling- Cracks may indicate the underlying moisture in building construction, especially when the water spreads and expands during changes in temperature.
  
  

• Cold or wet walls- When the walls feel cold or moist for touch, this is an indication that the water is present under the surface - often associated with increasing moist or condensation issues.
  
  

• Discoloration in paint- Yellow, brown or brown stains on the painted walls are another sign of hidden water damage. These stains are usually accompanied by moisture in the floor or roof.
  
  

• White salt-like stains on walls- Known as EFLLORESCENCE, it is caused by salt deposits when the water evaporates from the wall. This is a clear symptom of moisture in the walls due to leakage or capillary action.
  
  

How to Fix Dampness in Walls and Ceilings

If you are wondering how to cure moisture in the walls, it is important to address both cause and damage. Plumbing leaks, structural cracks, or condensation as a result of moisture - all may require different approaches.

There is a step-by-step guide to solve this issue:

1) Identify the source- You can have a certified waterproofing contractor to inspect his property to determine whether moisture is due to leakage, increasing moisture, or condensation.

2) Repair structural damage- Fix cracks, replace damaged bricks, and seal intervals in roof or walls to prevent water penetration - especially in cases of moisture in building construction.

3) Apply waterproofing solution- Use high quality waterproofing chemicals such as tiger from 20MCC, ideal to prevent wall seepage, roof stains and moisture in the interiors of the house.

4) Improve ventilation- Compete moisture in bathroom walls and kitchens by ensuring proper airflow. Install exhaust fans or vents to reduce indoor humidity and prevent mold.

5) Install moist proof membrane- To treat moisture in the floor, adding a moist-proof course during construction or renewal helps block the moisture from the ground.

6) Use water circulation coatings- Apply silicone-based coatings on the outer walls for long-term security against rain and humidity-necessary to maintain healthy, healthy interiors.

Failing home moisture is not just about aesthetics - it is about the health of your home and the good of your family. If you look at the signs of moisture in the construction of walls or roof, do not delay.

20MCC Experts For Home Dampness Issues

The various buildings show different types of home dampness. Replacing bricks or painting them with an exterior silicone water repellent paint will help you.

With our waterproofing experts, all your home dampness problems are solved. We will advise you on the best approach to resolving home dampness at a reasonable price too. 

We have the best waterproofing chemicals and solutions such as Tigersil ; it is the best waterproofing solution and many more.

Now, it's time to check your house health and get in touch with 20MCC waterproofing experts to make your home feel alive again.