Open-joint cladding systems offer a modern aesthetic but require special detailing to manage water and UV exposure. This article reviews components and best practices for successful open-joint facades.
Overview
Unlike sealed cladding, open-joint rainscreens have intentional gaps between panels that expose the underlying water-resistive barrier (WRB). The WRB must be UV-resistant, and all fasteners must maintain integrity behind the panel gaps. Systems must manage both direct water intrusion and air movement through the cavity.
🔍 Quick Picks
- UV-Resistant WRB: DELTA-FASSADE S WRB
- Vertical Furring Vent System: Cor-A-Vent SV-3 Rainscreen Strip
- Cladding Panel Clips: Panel Mounting Clips for Open-Joint Systems
Conclusion
Open-joint systems demand UV-durable and drainage-capable WRBs. Select materials tested for long-term exposure and ensure airflow is maintained without compromising water resistance.
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Performance and Longevity
Open-joint systems are attractive but require thoughtful engineering. Ensure the WRB can withstand UV exposure (typically >180 days), and that fasteners and support systems don’t channel water inward. Some systems use double-layer WRBs or sacrificial black mesh for added durability and aesthetics behind gaps.
