Waterproofing & water ingress control
BCS delivers expert concrete and asset repair, protection, and strengthening solutions using advanced technology, premium materials, and industry-leading expertise.

Waterproofing Australia’s largest commercial structures since 2004
Backed by over 20 years of industry experience, we combine high-quality products with unmatched expertise to deliver water ingress control solutions that consistently exceed expectations.
Control water ingress and protect your structure with Building Chemical Supplies
BCS offers tailored water ingress control and waterproofing solutions for car parks, basements, tunnels, bridges, and commercial structures, ensuring long-lasting protection and structural integrity.
Our waterproofing & water ingress control solutions
With a diverse range of both standard and custom solutions, our expert team applies advanced injection systems, high-performance sealants, and durable waterproof barriers to deliver effective and lasting results. These include:
Epoxy injection
Epoxy injection is ideal for bonding structural cracks, achieving a permanent, high-strength solution that restores the integrity and stability of compromised structures. This approach ensures long-lasting results that prevent further damage, saving you from costly repairs down the line.
Polyurethane (PU) injection
Perfect for flexible sealing in areas affected by water ingress, PU injection expands and cures inside cracks and voids, effectively preventing moisture from entering the structure. This solution is ideal for areas with fluctuating temperatures or moisture levels, offering long-term protection.
Surface sealing and stitching
Surface sealing and stitching are used to strengthen compromised concrete areas, preventing the spread of cracks and reinforcing the overall stability of the structure. These techniques are designed to address more widespread damage and ensure the structure remains secure for years to come.
Crack routing and sealing
This process involves routing out cracks to create a stable base for sealing. It helps prevent further damage by stopping the spread of cracks, reinforcing the affected areas, and providing a smooth, effective seal that protects the concrete from moisture and additional stress.
Causes of water ingress
Water ingress can lead to significant damage if not addressed promptly. Identifying the underlying causes is necessary to prevent further deterioration and reinforce the long-term integrity of your structure. Below are some of the most common factors that contribute to water ingress in buildings.
Poor waterproofing or deterioration
Inadequate waterproofing systems or the natural wear and tear of existing materials can lead to water entering vulnerable areas of a structure. Over time, waterproof barriers can degrade, allowing moisture to penetrate.
Structural cracks and gaps
Cracks and gaps in the foundation or walls provide easy entry points for water. These can develop due to settling, shifting, or general wear, compromising the integrity of the structure.
Hydrostatic pressure
When water accumulates around a structure, it exerts pressure against the walls and foundation. This hydrostatic pressure can force water through cracks or weak spots, leading to water ingress.
Drainage and plumbing issues
Improper drainage or blocked plumbing systems can cause water to back up or pool around the structure. This excess moisture can seep into the building, contributing to water ingress and potential damage.c
Our waterproofing & water ingress control process
Custom solutions & expert methodology
We offer expert guidance and effective water ingress control strategies for each project, combining proven methods with innovative solutions. By thoroughly assessing site conditions, we develop waterproofing approaches that address both structural and environmental needs.
Precision application & quality assurance
Our skilled team uses advanced equipment, high-quality materials, and quality control to prevent water ingress while delivering durability, safety, and longevity. We adapt to changing conditions, maintaining seamless execution and preserving the integrity of your structure.
Comprehensive monitoring & reporting
We prioritise safety, transparency, and accountability through detailed reporting, ongoing assessments, and strict compliance with Australian and international standards. Our structured water ingress inspection and monitoring processes ensure long-term performance and client confidence in every project.
Dedicated to compliance and safety across every project
At BCS, we are committed to our work, upholding strict adherence to QBCC regulations, using the appropriate and safe equipment, keeping safety training current, and applying site-specific risk and environmental management plans for each project.



Why choose
Building Chemical Supplies
Expertise in injection, repair, and protection (IRP)
With over 20 years of experience, we offer comprehensive solutions to address all aspects of water ingress, providing long-lasting protection and enhanced performance for various structures.
Advanced equipment and skilled applicators
Our team uses state-of-the-art technology and proven techniques to tackle water ingress challenges, delivering precise, efficient, and high-quality results on every project.
Compliance with Australian regulations and international standards
We strictly adhere to industry standards to ensure every water ingress control solution complies with both local and global safety, quality, and environmental requirements.
Ingenuity and flexibility
We provide on-demand services that can scale to meet the specific needs of your project, from large commercial structures to smaller repairs. Our team has also created custom water ingress control solutions that address client requirements with innovative approaches you can’t find anywhere else.
Our projects
Our relationships with repeat customers such as Acciona, QLD Rail, Transurban, CPB, Rio Tinto, Sydney Trains and more have allowed us to repeatedly provide successful solutions on projects such as:
Control water ingress today with Building Chemical Supplies
Whether you’re dealing with structural cracks, water infiltration, or long-term concrete durability concerns, our expert team provides tailored solutions to restore and protect your structures.
Contact us today to discuss how we can help waterproof your concrete.