Shielding the Overhead: Exploring Waterproofing Solutions for Concrete and Low Pitch Roofs

The Imperative of Waterproofing

Water is a silent infiltrator that can cause significant damage over time if not adequately managed. In concrete roofs, water can find its way through cracks and pores, leading to issues like mold, mildew, and structural weakening. Similarly, low pitch roofs are prone to water pooling, which, over time, can cause sagging, leaks, and damage to the roof structure and interior of the building.

Waterproofing Techniques for Concrete Roofs

  • Liquid Waterproofing Membrane: This is a thin coating which consists of a primer coat and two top coats applied by roller, brush or spray. It’s flexible and resistant to UV rays.
  • Cementitious Waterproofing: Being a rigid type of waterproofing, it is ideal for concrete surfaces. It’s applied with a long-handled brush and can be a cost-effective choice.
  • Polyurea Coating: This is a highly flexible and fast-setting waterproofing method that adheres well to concrete and provides a durable seal against water ingress.

Waterproofing Solutions for Low Pitch Roofs

  • Sheet Membranes: These are large waterproof sheets laid across the roof, providing an impervious barrier to water. They can be self-adhering or require a separate adhesive.
  • Bituminous Membrane: Known for its waterproofing qualities, this membrane is perfect for low slope roofs, creating a seamless barrier against water penetration.
  • TPO and EPDM Roofing: These are single-ply roofing membranes that are resistant to water and UV rays, making them a suitable choice for low pitch roofs.

Price Points: An Investment in Longevity

The cost of waterproofing varies based on the size of the roof, the materials chosen, and the labor involved. While there might be an upfront cost, waterproofing is a long-term investment that protects the structural integrity of the building, enhances the lifespan of the roof, and reduces maintenance costs in the long run.


A robust waterproofing system is a cornerstone of a durable and long-lasting roof, whether it’s made of concrete or has a low pitch. By understanding the various waterproofing methods available and investing in a quality waterproofing solution, building owners can ensure that their premises remain dry, safe, and secure through all seasons.


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