In ACM (Aluminum Composite) curtain wall projects, joint sealing plays a critical role in long-term facade durability. Different projects demand different levels of weather resistance, adhesion, and flexibility.
ACM Curtain Wall Sealants Requirements in Construction Projects
ACM panel joints are continuously exposed to UV, temperature changes, and structural movement.
For contractors, silicone sealants ACM need to meet several key performance requirements:
- Joint cracking, leading to a degradation in sealing performance
- Rainwater infiltration, causing moisture absorption—and potentially even delamination—of the core material
- Adhesion difficulties on coated surfaces (e.g., PVDF finishes)
- Signs of aging, chalking, or surface contamination following prolonged environmental exposure
Therefore, from the perspective of the engineering contractor, ACM sealing materials must simultaneously satisfy the following core performance requirements:
- Weather resistance: Remains stable under long-term UV exposure and temperature changes.
- Movement Adaptability: Accommodates joint movement caused by thermal expansion, preventing cracking and adhesion failure.
- Waterproofing Performance: Prevents water penetration under long-term rain and wind pressure.
- Long-term Stability: Maintains stable color and surface appearance over time, resisting chalking, staining, and discoloration in outdoor conditions.
Silicone Sealants Solutions Suitable for ACM Curtain Walls
High Modulus Silicone Sealant
Силиконовые герметики offer neutral curing and reliable weather resistance in one-component systems.
In practical engineering applications, In real applications, its key advantages include:
- Broad Substrate Adhesion: Exhibits excellent adhesion to a wide range of building materials—including glass, aluminum panels, stone, and metal structures—and typically requires no primer application.
- Superior Movement and Elasticity Performance: Upon curing, it forms a highly elastic sealing layer capable of withstanding structural movements and joint deformations over the long term.
- Weather Resistance: Maintains stable performance in environments exposed to UV radiation, ozone, and atmospheric aging, and is highly resistant to chalking or failure.
- Wide Temperature Adaptability: Maintains stable performance across both high- and low-temperature extremes, making it suitable for projects located in diverse climatic regions.
- Environmental Friendly: Non-corrosive to adjacent materials, exhibits excellent compatibility, and does not stain or contaminate the substrate surface.
Applicable Engineering Application:
- Sealing systems for architectural curtain wall joints.
- Joint sealing for ACM (Aluminum Composite Material) panel facades.
- Waterproofing and sealing for high-rise building facades and roofing systems.
- Sealing Solutions for Long-Term Outdoor Structures
TNS-721 high modulus silicone sealant is a one-component, neutral-cure silicone weatherproofing sealant. Upon curing at room temperature, it forms a high-strength, highly elastic sealing layer that exhibits excellent adhesion and joint movement capability, making it ideal for curtain walls and other building joints.
Professional Neutral Silicone Sealant Supply for Projects & Distributors
For contractors and distributors, we offer:
- Bulk supply for specific projects
- Stable, long-term supply partnerships
- OEM / Brand customization support
- Provision of TDS, MSDS, and technical documentation
- Support for sample testing and solution matching
How to Select the Right Sealing Solution for ACM Projects
When choosing neutral cure silicone sealants, consider:
- Service environment (indoor or outdoor)
- Joint movement requirements
- Need for paintability or aesthetic color matching.
- Project timeline and durability requirements
For specific sealing solution recommendations tailored to ACM curtain wall projects, you may share your application and substrate conditions. We can help match suitable sealant solutions and provide sample testing support.