Damp proofing

It is the technique by which moisture control product is applied to the walls and floors of the building. This use of this material did not allow the moisture to move inside your roof. 


Difference between the damp proofing and vapor barrier

Damp-proofing is a technique that averts the entrance of moisture inside your property. The vapor barrier prevents the deposition of dampness on the wall. This technique makes your property resistant to moisture and, it is not accurate. It is tested by specific test methods, limits, and engineering methods.


City and town paving and masonry are providing damp proofing services in the following ways:


Application of membrane

The damp proof membrane is applied to the wall to prevent the crossing of the moisture. For example, the use of polyethylene sheet placed under the concrete slab stops the entrance of dampness. 

  • Damp proof course

It is a type of barrier used in the structure to prevent the rising of moisture through capillary action. This process is known as rising damp which may be horizontal and vertical. The barrier is placed below the walls independent the wall is load-bearing or partitioned.

  • Integral damp proofing

This technique is done by adding the material in the concrete to make the surface water-resistant.

  • Surface coating

The application of water-resistant material to the surface, such as epoxy resin, makes the surface resistant to non-pressurized moisture such as rainwater. We can also use cement sprays on the wall known as shotcrete to resist the water under pressure.

  • Making the cavity in the wall

In this technique, we construct a rain screen or cavity between the interior and exterior wall to prevent water seepage.

  • Materials required for damp proofing
  • The use of different types of flexible material is required, such as butyl rubber, asphalt, copper, plastic sheet, etc. Semi-rigid material like mastic asphalt is also required.
  • The use of different rigid materials is also common such as stone, slate, cement mortar. Stones and mortar mix with waterproofing compounds
  • Use of coarse sand floors under floors and plastic sheet



  • How is the damp proofing done?

Based on a survey, we decide which technique will prove suitable for damp proofing.

  • Application of DPC

The DPC is a very durable material such as metal, plastics, etc. This material is placed into the mortar between the bricks. Near the ground, you see that it appears as a thin layer. The DPC is applied on both sides of the walls. About 150 to 200mm is layered to the outer and 2 to 3 bricks above the ground level.  In the inner wall, it is below the floor level. In this way, rains splash off from the ground without saturating the wall. 

  • The barrier to the concrete walls and floors

The vapor barrier is applied on the exterior walls and floors in the form of products to prevent the entrance of moisture into the concrete walls and floors. The coating is in the form of asphalt, asphalt emulsion. The use of rubber products does better performance.