What Methods Are Commonly Used for GRC Curtain Wall Waterproofing? Technical Analysis of the Qinglong GRC Waterproofing System

GRC curtain wall waterproofing follows the principle of "drainage first, combining waterproofing with drainage," ensuring watertightness through multiple lines of waterproofing defense. The main waterproofing measures include: joint sealing with weather-resistant sealant (thickness ≥6mm), drainage through internal cavity construction, water diversion via drip lines, and interception by waterproof boards. These measures form a complete waterproofing system.

In terms of waterproofing material selection, Qinglong GRC uses premium silicone sealant (movement capability ≥25%) with a service life of up to 20 years; drainage holes are installed (spacing ≤500mm) with a diameter of 8-10mm; and stainless steel waterproof boards (thickness ≥1mm) are used. In a coastal project, this waterproofing system withstood typhoon tests and remained leak-free over 5 years of use.

Key Technologies for Joint Waterproofing

Sealant thickness ≥6mm, width 1.5 times the joint width; backer material filled to a depth ≥ the joint width; these technologies ensure effective sealing.

Cavity Drainage System Design

Drainage holes installed at spacing ≤500mm; cavity height ≥20mm; slope ≥5%; these designs ensure effective drainage.

Waterproof Board Installation Requirements

Stainless steel board thickness ≥1mm; overlap length ≥100mm; these requirements prevent rainwater penetration.

Dynamic Joint Waterproofing Treatment

Accommodates thermal deformation; resists seismic movement; these treatments ensure dynamic sealing.

Waterproofing requires systematic design. Qinglong GRC waterproofing technology is mature and reliable.