Material Spotlight: Enhancing Concrete Landings with Sika Innovations
In our ongoing efforts to maintain and enhance community infrastructures, we have a current project that involves the meticulous repair of concrete landings throughout a local community association. These landings are crucial for both safety and unit access, requiring top-notch materials and techniques to ensure durability and effectiveness. For this project, we’ve specified products made by Sika, a renowned leader in construction products, to utilize their specialized materials designed for concrete repair and waterproofing.
Challenges in Repairing Concrete Landings
Concrete landings built on wood-framed supports face unique challenges, including the risk of water damage both to the concrete itself and the underlying wood structure. Ensuring these structures are not only repaired but also enhanced to prevent future issues is a top priority.
Sika Solutions for Durable Repairs
For this project, we’re employing a multi-layered approach using two specific Sika products in three key applications:
- Sikaflex 1A: This elastomeric joint sealant/adhesive is crucial for creating a cant strip at the perimeter of the landings. The cant strip design helps prevent water from pooling at the edges, which is vital for extending the life of the repair. Sikaflex 1A will also be used to seal the planned control joints in the new concrete slabs, providing a flexible, waterproof seal that adapts to temperature changes and settling without cracking.
- Sikalastic – 726 One Shot: As the top layer over the new concrete slab, this pedestrian-grade coating offers an exceptional waterproof barrier. It not only protects the concrete from water ingress but also adds a slip-resistant texture that enhances safety for residents. This coating is specially designed to offer long-lasting protection with just a single application, simplifying the installation process while providing superior performance.
Strategic Application for Optimal Results
The application process involves removing the existing damaged concrete and replacing the wood sheathing atop the 2x wood framing. Below the new concrete, a membrane flashing will be installed to add an additional layer of moisture protection. This comprehensive approach ensures that every layer works together to protect the structure from water damage, from the membrane flashing at the base to the Sikalastic coating on the surface.
Long-Term Benefits
Integrating Sika products into our repair strategy significantly enhances the durability and effectiveness of community infrastructure. Our approach ensures that these landings are not only repaired but are also better protected against future wear and damage, maintaining their safety and functionality for the long term.
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