The Best Techniques to Secure Floor Drains During Water Tightness Tests

The waterproofing of bathrooms is very important. After completing the waterproofing, it is essential to conduct a water tightness test in a timely manner. Only when the water tightness test passes can the waterproofing be considered qualified. So, how can you block the floor drain during the water tightness test?

How to Block the Floor Drain for Water Tightness Test

1. Use rubber gloves to fill the floor with water, completely suppressing the floor drain to prevent water leakage. An alternative method is to use a condom filled with water, as its properties are similar.

2. Sprinkle some water around the floor drain and use a crystal plate, which can be placed on a table, for better results.

3. Using a plastic bag filled with water can also serve a purpose, though there might be slight leakage from the sides, indicating that the plastic bag is not tightly sealed.

4. Take a cork that is slightly smaller than the drain hole, wrap it in several layers of cloth, twist it a few times and then tighten it. Initially, there may be some leakage, but don’t worry about the cork expanding, as you can remove the damaged cork when not in use.

5. The water tightness test, also known as the water storage test, must fill the area with water that has a sufficient volume. The depth of water should not be less than a certain height, generally around 30 cm, and the water should remain for 24 hours. If there is no significant drop in the water level, it is considered qualified.

How to Conduct a Water Tightness Test in the Bathroom

1. This test is generally conducted in areas with waterproofing requirements, such as rooftops, bathrooms, or rooms. In the initial phase of the water storage test, check every hour; in the later stages, check every 2 to 3 hours. If leakage is found, immediately stop the water storage test and improve the waterproof layer. Once improvements are completed, conduct the water storage test again.

2. Lightweight walls must undergo a spraying test, where water is continuously sprayed from top to bottom for 3 minutes. Four hours later, check the other side of the wall for any penetration. If there is no penetration, it can be regarded as a successful waterproofing construction acceptance.

3. Check downstairs, as minor leaks can be difficult to notice on the surface. Therefore, during the water tightness test, it is crucial to inspect downstairs for any signs of leakage. If leakage is observed, it should be addressed immediately by either redoing the waterproofing or repairing the leaking area.

In conclusion：this article addresses how to block the floor drain for a water tightness test. I hope it can help everyone. For more information on this topic, you can visit our website.