The hidden-frame glass curtain wall project of the commercial complex in the urban area

Project Overview
This is a Class A office building in a first-tier city in South China. The total construction area is 68,000 square meters. It features a full-frame unit glass curtain wall. The exterior facade uses ultra-clear coated insulating glass combined with anodized aluminum profiles. The area is located in a coastal region with frequent rain and strong ultraviolet radiation. The construction period is 120 days. The total amount of curtain wall sealant used is 12 tons.
Core Construction Challenges
There is a significant temperature difference between day and night in the coastal area, resulting in large thermal expansion and contraction of the glass. Ordinary sealants are prone to cracking and water seepage.
The compatibility requirements for coated glass and aluminum profiles are high. To avoid the formation of a gel layer that could contaminate the surface of the panel.
The wind pressure on high-rise buildings is high, and the structural bonding needs to bear long-term loads. The waterproofing life of the weather-resistant joints is required to be over 15 years.
Selected Dual-Sourced Products
SY-9900 Neutral Silicone Structural Sealant, SY-9700 Weather-resistant Silicone Sealant Solution
The hidden glass and aluminum secondary frame are structurally bonded using SY-9900 structural adhesive, with a displacement capacity of ±25%, and the tensile strength meets the national standard GB16776. They can bear the self-weight of the glass and wind pressure loads.
The expansion joints of the curtain wall exterior walls and the joint seams of the panels use SY-9700 weatherproof adhesive. It is resistant to UV rays and salt fog, suitable for coastal environments with high humidity and salt content.
The factory provides compatibility and pollution test reports. Before construction, on-site sample guidance is provided, and unified mixing, gluing, and trimming standards are followed.
Landing effect
After completion, there is no leakage, detachment, or color change for 5 years. The elasticity of the adhesive remains intact, and there is no oil stain on the glass surface. The project general contractor has long-term定点 procurement of dual-source curtain wall adhesives， and simultaneously provides a full range of sealing materials for its hotels and commercial complexes. Customer review
The double-source structural adhesive has comparable weather resistance performance to imported top brands. It offers stable supply and complete quality inspection materials. It is completely reassuring for the use in coastal high-rise curtain wall projects, and the overall procurement cost is lower.