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What is seepage and what are the precautions

 What is seepage and  what are the precautions 

Seepage of water 

Seepage of water is water seeping through walls or water flows from one place to another because of the presence of small holes due to any breakage or because of porous material. It usually occurs after heavy rainfall. Ground water levels rise and additional water in the soil creates wall damp. Rising damp that affects the wall of the building. It occurs when moisture from the grounds travels up through the wall by capillary action.

Water seepage in the wall could be avoided if proper precautions are taken during the construction. This will not just save a lot of money but will also keep the structural strength of your construction intact. 

 Seepage in walls is one of the most common structure issues faced by most of the home owners in Nepal.

Common causes of water seepage:

  • Poor construction material

  • Leakage in plumbing

  • Defective waterproofing material

  • Crack in exterior wall

  • Faulty drainage

Seepage in wall 

Seepage in walls may be used of second-class raw material or poor workmanship during construction. it happens due to not taking the waterproofing measure seriously, during the process of construction.

Seepage in walls is also harmful to health. Seepage causes the growth of mold and fungus thus affecting health and eventually affecting the structure of the building 

Prevention of wall seepage. Exposure to dampness and mould caused nasal stuffiness, throat irritation, eye itching, and skin allergy.

Seepage in-wall treated by:

  • Use an exhausted fan in the kitchen and bathroom to ensure proper ventilation. This is to expel the moisture from the interior.

  • Avoid painting during winter as it creates a lot of moisture. 

  • Don't dry clothes inside the house.


External wall

As for external walls of concrete structures, walls are exposed to the weather and contact with rain water can lead to cracks at the wall and give way to water and moisture seepage at the wall. Seepage in the wall makes the wall dull, damp. If it is not treated in time, this dampness seeps into the interior part of the walls and ruins the wall paint. external wall seepage could be due to a crack on an external wall, honeycomb concrete, defective waterproof membrane at the roof, defective external wall and defective drainage pipe. Splashing rainwater can cause wall seepage.

External wall seepage treated by:

  • Using good quality water resistance paints.

  • Raincoats are required to be applied to the external wall. It will create a barrier to the rainwater, and moisture and prevent dampness and seepage at the wall

  • Repairing wall cracks immediately to prevent wall seepage. 

  • External walls and boundary walls should be covered with cement plaster mixed with waterproofing additives, to prevent seepage and dampness in the wall.

  • Exterior waterproofing coats are required to be applied to the external walls. A waterproof coat will create a barrier to the rainwater and moisture, and prevent seepage.

Internal wall

Seepage in the wall begins near the window, door, or the ceiling as there are places where cracks are seen.  Cracks in the wall allow water to ingress from the terrace and external walls and cause dampness. Repair the crack and treat the damp area with waterproof material.

One of the main reasons for the seepage of water through to the interior of home is the use of poor-quality paints on the wall. Poor quality paints allow the moisture to seep through the concrete resulting in seepage in the wall and thus damaging the wall. 

Internal wall seepage treated by:

  • Use high-quality water resists paints.

  • Use an exhaust fan in the kitchen room bathroom to ensure proper ventilation.

  • Seal the gap between the window and door frame and walls.

Seepage at ceiling

Water leaking from the ceiling is a common defect in the house ceiling area. When water leaks through the ceiling area of the roof is known as seepage at ceiling. The first reason for seepage in wall through ceiling is the accumulation of water on the roof. This is a very common problem in old houses, mostly occurring in the bathroom and toilet. It is a difficult task because water can penetrate from one place and flow through the slab before it starts penetrating into the wall and floor. Ceiling water leak, if this defect is left untreated it can lead to severe outcomes like damaging property, wall collapse, and staining wall and ceiling. Leaking in the ceiling is almost caused by rainwater. The leakage usually happens during and after rain. Water leaks through the ceiling or any other visible sign of water damage either on the drywall or plaster should not be taken lightly. Typically, there is the possibility of more water storage in defective areas than visible to the eye, which might lead to structure damage.

Signs of water leakage from the ceiling

  • Discoloration of paints, slagging plaster.

  • Spot of water on the ceiling.

  • Crack or bubble paints on the ceiling.

Causes of ceiling leakage:
  • Plumbing or sanitary fitting

  • Damaged waterproofing system

  • The sloping roof can collect water that can collect water

Pevention of ceiling leakage: 

  • Treat any crack or blocked pipe in the terrace of the roof to prevent leakage.

  • To prevent seepage on the top floors, ensure that the terrace floor has a slope that does not allow water logged after rain.

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