A large number of Indian homeowners complain of damp walls with the onset of the monsoon.  During the rainy season, moisture seeps through the exteriors of the house and causes damp patches on the internal walls. This results in peeling paint, leakage, mould, fungus and also makes your home feel cold and dank. Often, these patches remain long after the rainy season has passed.

The arrival of rainy season calls for special attention to your building as any building must be protected from various kinds of damages that are associated with damp weather. During the time of the construction, you can discuss with your Architect how to ensure protection for your building against weather extremities.

Prolonged exposure to moisture can do serious damage to your walls and to the structure of the house, so it’s essential to deal with the problem effectively.

Here are three quick and easy ways to prevent damp walls:

  1. Check for any cracks in the walls and seal them –

Firstly, ensure that you fix any cracks that start appearing at any place on the building and plug them properly so that they don’t grow bigger. Rainy season will worsen the situation as cracks facilitate water seepage into the interior structures of the building. Cracks on any building wall are the precursor to further potential damages to the building. Check for flaking plaster on the building exteriors that can aggravate damage. Make sure that you inspect the building regularly for any cracks and get them fixed while they are still in the initial stage.

Over time, the walls of your house can develop cracks, which typically start near the door and window frames. These cracks allow moisture to get into the structure of your building and cause damp patches. All these gaps need to be filled with crack fill putty. Once the gaps and cracks are filled, all the loose plaster is removed and the wall is then re-painted. Just make sure you do this before the monsoon starts.

  1. Waterproof the external walls and roof –

Many exterior paints used on buildings are permeable and allow water to seep from the exteriors of your house to the interior walls. To prevent seepage, exterior waterproofing coats are required for the external walls  A waterproof coat will create a barrier to the rain water and moisture, and prevent damp walls in your home.

Waterproofing the roof is just as crucial as waterproofing external walls. The terrace is exposed to harsh weather conditions and water easily accumulates on the surface resulting in leakage and damp patches on the interiors. Roofs should ideally have a waterproof roof coating which acts as a sealant and prevents seepage of water.

  1. Install a damp proof course –

Sometimes, you will notice wet patches all along the lower portion of your walls, close to the skirting. A damp proof course is a preventive measure to prevent ground water from rising up through the walls of your house.  In a damp proof course, a preventive barrier of an impervious material ( something that doesn’t allow water to pass through) is constructed into the brick wall about 150mm above ground level. This prevents any moisture from the ground rising through the walls and causing damage.

Most buildings are usually constructed with a damp proof course in place. However, if you’ve noticed damp patches on the lower portion of your walls, the damp proof course may need replacing.  This is an intensive job that needs to be done right, so it is best to get a professional to evaluate the damage and replace the damp proof course if necessary. Remember to keep your home  well-ventilated during this season and take quick steps to remove any mould or fungus from your walls since this can cause respiratory issues. If you notice excess moisture or deep cracks in your walls, consult a professional immediately to prevent damp walls.

  1. Check all pipelines –

The rain water pipes and sewers should be well maintained and you should ensure that the rain water and sewage is passing through them unobstructed. If these lines of flow get choked, water will accumulate and inundate the areas. If such is happening in the roofs or at any place inside the building, that part will get damaged due to water retention.

  1. Painting doors & windows –

Some things can be done to further reduce accumulation of moisture within rooms and building premises. If there are wooden doors, windows or other wooden fittings, they tend to swell up during rainy season due to absorption of moisture. Make sure they are varnished and painted before fixing them so that such doesn’t occur during moist weather. Get them redone after some time to maintain them. Some rooms can have indoor plants. These should be removed outside, preferably in open places as the presence of plants in enclosed areas contributes to increase in air moisture.

  1. Checking of fabrication items –

You can ask the construction company for maintaining the building structure in a manner so that it’s least vulnerable to rain water damages. The rooms should be well ventilated and provide entry of sunlight, so that there is no dampness. Get all iron structures of the building like grills, railings, window panes, etc painted to prevent rusting by an oxide primer and oil paint.


These simple remedies can ensure that your school building remains free of damages from rain water. In the long run, these simple steps will protect the structure of the building and help you save thousands in repairs and give your building a longer life.



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