Waterproofing Techniques For Terrace

terrace pool - waterproofing

Terraces is one of the tricky parts when it comes to construction. The surface is flat and it becomes hard for water to run off the structure. When water moves slowly or stagnates on the terrace, it can be dangerous for the whole structure, weakening it and causing leakages. Knowing waterproofing techniques for terraces can help you avoid this problem for your building, making it durable. Here are some waterproofing techniques for terraces to help keep your house dry and free from leakages.

Traditional Methods

The traditional methods include the brick bat coba method and bituminous treatment.

In the brick bat coba method, the brick and motor are used to make a slope for water to easily run off from the flat terrace.

The bituminous treatment uses (asphalt) as a thin layer on top. Both these traditional methods involve the addition of waterproofing chemicals  to the mixtures.

Modern methods

A waterproofing layer is formed by mixing chemicals and cement. However, this is not a favorite choice to many as there are poor quality chemicals circulating around with short shelf life and vulnerable to extreme weather conditions.

terrace pool
Terrace Pool – Waterproofing

Terrace Waterproofing Procedure

Preparation of the surface

Remove loose concrete and debris on the terrace by raking the construction joints before patching the joints with cement and sand mortar.

Grout the nozzles and clean the RCC substrate to remove any oil, grease, and loose particles.

If there are any cracks on the RCC, repair them with cement-sand mortar.


Use a sprinkler water to wet the RCC and apply two coats o f cement based polymer. The two coats should be applied at the right angles. Lay a glass fiber mesh between the two coats for additional tensile strength. Add a third coat when the second coat is dry.

Protective Layer

Add a protective layer made of cement and sand mortar mixed with a waterproofing compound.

Brick Bat Coba Treatment

Lay brick bats with at least 40mm thickness to a specific slope. Apply the cement sand mortar mixed with a waterproofing compound on the voids left by the brick bats.

Apply 20mm thick joint less waterproofing plaster and finish the surface with a coat of neat cement. Make khurras for drainage off the terrace. After the whole process, cure the whole surface with water for two weeks.

What To Consider Before Waterproofing

It is important to consider certain conditions in order to choose the most appropriate waterproofing solution. Before waterproofing a surface, here is what you should consider.

  • Evaluate the state of the flooring
  • Verify the layered part of the structure
  • Ensure that the slope of the floor is appropriate
  • Make sure there is no separation or cracks between the layers.

Depending on the condition of the terrace, you can choose the suitable option for waterproofing.

If there are any issues found, such as cracks and holes, it is important to repair them first before waterproofing the terrace.


Terraces are a very important part of any building. They provide additional space to keep equipment, and lso offer room for expansion of the building. Keeping them in good shape by waterproofing can help maintain the overall structure of the building. Waterproofing helps in preventing leakages and thereby keeping the structure dry and strong.