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Case Study: Waterproofing the Concord Hospital Multi-Storey Car Park

Here’s the best way to apply CMA100® ULTRA CLEARSEAL. Follow each of these steps to ensure your waterproofing is done right:

1. Choose appropriate application equipment: Select either a backpack sprayer or a motorised pump depending on your project size.
 
2. Prepare the surface: Ensure the concrete is properly vibrated, with a minimum of 20MPa, and that the surface is clean, dry, and free from any materials that may hinder penetration.
 
3. Apply: Spray the CMA100® ULTRA CLEARSEAL product onto the surface until the concrete won’t absorb any more, making covering cracks as needed at a rate of approximately 1 litre per 3 lineal meters.
 
4. Allow drying time: Let the surface dry until touch dry, generally within 2-5 hours depending on climate. If temperatures fall below +5°C or rise above +40°C contact usfor specific instructions.
 
5. Water generously: CMA100® ULTRA CLEARSEAL cannot be overwatered so water the surface generously both 24 and 48 hours after the initial application to facilitate optimal absorption. Feel free to pond the area to confirm the effectiveness of the product.

 

application equipment

Waterproofing Requirements

Given the environmental challenges, ensuring the structural integrity and longevity of the Concord Hospital Multi-Storey Car Park was a top priority. The open top level required advanced waterproofing to protect the facility from the elements and ensure consistent functionality for years to come.=

The waterproofing solution needed to:

  • Resist water ingress and damage caused by Sydney’s seasonal rainfall, which can lead to long-term structural issues if not addressed.

  • Endure UV exposure and thermal stress associated with Australia’s harsh climate, preventing deterioration from extreme weather conditions.

  • Provide a surface capable of supporting heavy vehicle and pedestrian traffic, maintaining functionality without compromising performance or safety.


In addition to meeting these technical requirements, the chosen waterproofing solution needed to align with the project’s overall goals of efficiency, sustainability and cost-effectiveness — warranting the car park’s longevity while staying within budget and adhering to strict timelines.

The Waterproofing Solution

To meet these demands, the solution chosen was CMA100® ULTRA CLEARSEAL, a spray-applied waterproofing technology from Scientific Waterproofing Products (SWP)

This advanced formulation is designed to protect concrete against water, chloride and other chemical attacks for the entire design life of the structure.

Health Infrastructure NSW chose CMA100® ULTRA CLEARSEAL for the following key benefits that it offers:

  • Durability: CMA100® ULTRA CLEARSEAL integrates with concrete to form a permanent barrier, which reduces the need for future maintenance.

  • Crack Sealing: Seals cracks up to 2.2mm and remains reactive to address future hairline cracks upon contact with water.
  • Thermal Stress Resistance: Its unique formulation withstands extreme temperature fluctuations and allows direct application of hot asphalt, removing the need for additional protective layers.

  • Environmentally Friendly: A non-toxic, eco-conscious solution registered with the International EPD® System and EPD Australasia.

  • Ease of Application: CMA100® ULTRA CLEARSEAL speeds up construction timelines with its spray-applied application and is trafficable within 2 – 6 hours.

  • Increased Strength: Hardens concrete to a Mohs scale of 9, which surpasses granite’s strength.


CMA100® ULTRA CLEARSEAL
also eliminates the need for screeds, supports ponding water and enhances concrete bonds by 80%.

Prepare the surface:

Waterproofing Application Process

The waterproofing process began with Scientific Waterproofing Products’ (SWP) CMA100® ULTRA CLEARSEAL to the top deck’s concrete surface.

The technology ensured deep penetration into the concrete matrix, providing comprehensive coverage and creating a watertight barrier. This eliminated the need for traditional protective layers and streamlined the construction timeline, saving time and resources.

To achieve outstanding results with CMA100® ULTRA CLEARSEAL, here are the essential steps to follow for effective waterproofing:

  1. Choose appropriate application equipment: Select either a backpack sprayer or a motorised pump depending on your project size.

  2. Prepare the surface: Ensure the concrete is properly vibrated, with a minimum of 20MPa, and that the surface is clean, dry and free from any materials that may hinder penetration. 

  3. Apply: Spray the CMA100® ULTRA CLEARSEAL product onto the surface until the concrete won’t absorb any more, making covering cracks as needed at a rate of approximately 1 litre per 3 lineal meters

  4. Allow drying time: Let the surface dry until touch dry, generally within 2-5 hours depending on climate. If temperatures fall below +5°C or rise above +40°C contact us for specific instructions.

  5. Water generously: CMA100® ULTRA CLEARSEAL cannot be overwatered so water the surface generously, 6 hours after application, but not before 2 hours, and then both 24 and 48 hours after the initial application to facilitate optimal absorption. Feel free to pond the area to confirm the effectiveness of the product.


By closely following the product specifications and guidelines throughout the application process, the project was able to achieve optimal performance and deliver the best possible results. The flexibility of CMA100® ULTRA CLEARSEAL also allowed for seamless integration with other construction phases, promising minimal disruption to the overall workflow.

Apply

Waterproofing Project Outcome

With the CMA100® ULTRA CLEARSEAL, the top deck of the five-storey car park is now fully protected against water ingress – ensuring long-term durability, enhanced structural integrity and reduced maintenance needs.

The successful application of CMA100® ULTRA CLEARSEAL delivered exceptional results, meeting and exceeding the project’s waterproofing requirements:

  • Enhanced Durability: The top deck is now equipped to withstand prolonged exposure to water, UV radiation and thermal stress, ensuring its long-term structural integrity.

  • Trafficability: The waterproofed surface can safely accommodate both vehicle and pedestrian traffic, providing a functional and reliable parking solution.

  • Streamlined Construction: The efficiency of CMA100® ULTRA CLEARSEAL’s application contributed to a smoother construction process, aligning with project timelines and budget constraints.
Allow drying time

The waterproofing of the Concord Hospital Multi-Storey Car Park top deck exemplifies the power of innovation in construction. 

CMA100® ULTRA CLEARSEAL’s advanced technology, combined with its ease of application and long-lasting performance, provided an effective solution to the project’s unique challenges.

As part of the broader development at Concord Repatriation General Hospital, the car park contributes to the hospital’s mission of improving access to healthcare services and enhancing the overall experience for its community. Prioritising quality and sustainability for this project has set a high standard for future infrastructure initiatives in the region.

Scientific Waterproofing Products’ CMA100® ULTRA CLEARSEAL continues to demonstrate its value as a reliable and efficient waterproofing solution, making sure that large-scale infrastructure projects like the Concord Hospital Multi-Storey Car Park remain durable, functional and ready to serve the community for years to come.

Water generously

With SWP’s CMA100® ULTRA CLEARSEAL, you can also choose the ultimate waterproofing solution.

This solution effectively penetrates concrete to form a permanent barrier against water and endure harsh environmental conditions – perfect for large infrastructure projects like Concord Hospital’s Multi-Storey Car Park.

Like all our products at SWP, CMA100® ULTRA CLEARSEAL is environmentally friendly and designed to provide robust protection while maintaining sustainability. With its advanced formulation, you can trust CMA100® ULTRA CLEARSEAL to protect your project, your clients and the environment.

Get the best waterproofing solutions for your next project with SWP.

At Scientific Waterproofing Products (SWP), our team is dedicated to delivering innovative waterproofing solutions tailored to your unique needs, including the reliable CMA100® ULTRA CLEARSEAL.

If you want to learn more about our other high-quality waterproofing products or discover why CMA100® ULTRA CLEARSEAL is the perfect choice for your next construction project, contact us today!

As always, SWP is here to provide the right waterproofing solution for any challenge, ensuring your projects are built to last.

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