How to Waterproof UHPC Curtain Walls in Humid Regions? Qinglong UHPC Moisture-Proof and Waterproof Technical Solution

UHPC curtain wall waterproofing in humid regions adopts a "multi-level defense" strategy, including surface hydrophobic treatment, joint sealing waterproofing, cavity drainage organization, and internal moisture-proof construction. Through systematic design, the curtain wall system remains leak-free under a water pressure of 0.3MPa for 2 hours.

In waterproofing design, Qinglong UHPC employs multiple proprietary technologies: spraying silicone hydrophobic agent on panel surfaces with a contact angle ≥110°; double-seal joint design; installation of drainage holes and water guide channels; and ventilated, moisture-protected internal cavities. In a project in a high-humidity region, this waterproofing system withstood an annual rainfall of 2000mm, and after 5 years of use, the curtain wall interior remained dry and free of mildew.

Surface Waterproofing Treatment

Spraying silicone hydrophobic agent with water absorption ≤5%; regular maintenance and coating renewal; these treatments improve water repellency.

Joint Sealing Design

Using weather-resistant sealant with a service life ≥20 years; installing backing materials to control sealant shape; these designs ensure reliable sealing.

Drainage System Organization

Drainage holes spaced ≤500mm apart with a diameter of 8mm; installing water guide panels to direct water flow; these arrangements ensure effective drainage.

Moisture-Proof Ventilation Construction

Cavity height ≥30mm with maintained ventilation; installing breathable valves to balance air pressure; these constructions prevent condensation.

Waterproofing in humid regions requires systematic design. Qinglong UHPC proprietary technologies solve waterproofing challenges.