Sealing Treatment Method for GRC Panel Connections with Metal Components? GRC Metal Connection Sealing Technology

The sealing of GRC panel-to-metal component connections adopts triple protection: "substrate treatment + sealing material + constructive waterproofing." The contact surface is coated with a bonding agent (bond strength ≥1.0MPa), the joint is filled with a closed-cell foam backer rod, and silicone sealant is applied to the surface (thickness ≥6mm, width ≥1.5 times the joint width). The joint design allows a movement capacity of ≥15%.

In one project, improper sealing led to water leakage at the connection points and corrosion of the metal components. In projects treated to standard, however, the sealing remained intact after years of use. Testing shows that the Qinglong GRC sealing system achieves the highest national standard rating for watertightness and airtightness, with an anti-aging service life of ≥20 years.

Substrate Treatment Requirements

The substrate must be firm, clean, and dry; these requirements ensure adhesion.

Sealing Material Selection

Silicone sealant with movement capability ≥25%; these choices accommodate deformation.

Constructive Waterproofing Measures

Drainage holes are installed; cavities drain water; these measures discharge seepage.

Durability Assurance

Weather resistance ≥20 years; these safeguards remain effective over the long term.

Sealing treatment requires a systematic solution. Qinglong GRC's mature technology delivers durable sealing.