How many years does Bitumen Waterproofing last?

Depending upon the porosity of the surface, bitumen waterproofing can last for 10 years or more. This process assists in safeguarding closed structures, pavements, and other surfaces from water damage. Bitumen is a durable and effective solution employed by millions of individuals (homeowners and businessmen) globally.

Let’s discuss the waterproofing process in more detail.

What is Bitumen Waterproofing?

Bitumen waterproofing, also known as asphalt or tar waterproofing, involves the application of bitumen-based materials to create a water-resistant barrier. This technique is used to manage roofs, foundations, basements, and other surfaces. Bitumen is a hydrocarbon-based substance that forms a strong and impermeable layer when applied in the right proportions.

Bitumen Waterproofing – Is It Long-Lasting?

The lifespan of bitumen waterproofing depends on the quality of materials, process, and the environmental conditions to which it is exposed. Following are some key factors that influence the layering process.

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Quality of Materials

The quality of bitumen and other components play a significant role in coating surfaces. These materials are less prone to deterioration and UV. In addition, they possess the ability to withstand the test of time.

 Application Technique

Safe and smooth application is crucial for the long-lastingness of the bitumen surface. The process should be handled by experts of the highest caliber. On the other hand, improper application can lead to premature failure.

Environmental Conditions

The climatic and environmental conditions are essential in the installation of the bitumen membrane. Extreme temperatures, UV radiation, and freeze-thaw cycles can affect the lifespan of the waterproofing system. Bitumen can become brittle in extreme cold and soft in high heat, leading to crevices and ruptures.

Areas that experience heavy traffic or loads require more frequent maintenance and reapplication due to the constant wear and tear.


Periodic maintenance can extend the lifespan of the bitumen membrane. Inspections, repairs, and reapplications of protective coatings can help prevent deterioration and leaks.

Substrate Condition

The form of the substrate (the surface to which the bitumen is applied) also matters. If the substrate is not managed properly or is tarnished, it can affect the adhesion and performance of the waterproofing system.

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Managing the compatibility factor is essential for waterproofing experts: It leads to proper adhesion, smooth surface, and an attractive appearance.

As discussed before, the lifespan of bitumen waterproofing can range from 10 years or more. In ideal conditions, it can last even longer. As far as residential buildings are concerned, the useful life augments from 20 to 30 years.

However, it’s important to note that bitumen waterproofing is not a one-size-fits-all solution. Different types of bitumen materials, such as modified bitumen or built-up roofing, can have varying lifespans. The choice of the right type of bitumen and waterproofing system should be based on the specific requirements of the project.

To maximize the longevity of bitumen waterproofing, regular inspections and maintenance are crucial. Checking for signs of wear, damage, or deterioration, and addressing any issues are essential. Additionally, the application of protective coatings or sealants can help prolong the life of the coating.

Bottom Line

The lifespan of bitumen waterproofing is based on several factors, including material quality, application technique, environmental conditions, maintenance, and the type of project. While it can last anywhere from 10 to 30 years or more, proper care and attention are essential for ensuring the longevity and effectiveness of bitumen waterproofing. When done correctly, it is a reliable and cost-effective method for protecting structures from water damage.

Bitumen waterproofing experts are hard to find, especially if you are residing in a metropolitan city like Karachi. Its best to connect with Lakhwa Chemical Services, the one-in-all solution for your waterproofing and heat-proofing needs.

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