Overview
The Hansø MASTER+ Pergola is fully weather-sealed when the louvers are closed.
Its precision-engineered design ensures that rainwater is captured and redirected through an internal gutter system concealed within the frame and posts.
This allows you to enjoy outdoor living in any season — whether under light rain, steady showers, or after storms.
How It Works
The MASTER+ waterproof system is made up of three key components:
1️⃣ Interlocking Louvers
Each louver overlaps tightly with the next, forming a continuous watertight roof when closed.
Rubber seals along the edges prevent water infiltration between blades.
2️⃣ Integrated Gutters
The perimeter beams act as concealed gutters, collecting rainfall from the louvers.
Water is guided toward the posts without dripping along the frame edges.
3️⃣ Internal Post Drainage
Hollow posts contain vertical drainage channels.
Water flows through these concealed paths and exits at the post base — keeping surfaces underneath dry and clear.
Performance in Heavy Rain
The MASTER+ Pergola maintains complete water resistance in steady to heavy rainfall when louvers are fully closed.
Drainage efficiency is tested to handle up to 5 inches (125 mm) of rainfall per hour.
When open, louvers allow water to fall naturally without pooling or trapping.
💡 Close louvers completely before rainfall for maximum protection.
Drainage System Maintenance
To maintain long-term waterproof performance:
Check the gutter channels quarterly for leaves or debris.
Rinse drainage openings with water to prevent blockages.
Keep louvers clean so that rubber seals remain effective.
Inspect post bases for unobstructed water outlets.
📌 A clogged drain can reduce performance during heavy storms.
Installation Tips for Maximum Waterproofing
Ensure pergola is installed on a level, solid foundation to prevent reverse drainage.
Verify posts are correctly oriented — each contains an internal drain direction.
Seal the bolt caps and corner joints with silicone (included in kit).
Always close the louvers before storms or prolonged rain exposure.
🧰 Hansø-certified installers verify these conditions during professional installation.
Wind + Rain Synergy
When louvers are closed, the MASTER+ Pergola can resist winds up to 165 mph while maintaining its water seal.
The integrated structure prevents uplift and leakage even during combined wind and rain exposure.
During high winds, always keep louvers fully closed to enhance aerodynamic stability.
Snow and Freeze Notes
The louver seals are freeze-resistant and function normally in sub-zero temperatures.
During heavy snowfall, open the louvers slightly to allow snow to fall through.
After melting, water drains automatically through the posts — no manual removal required.