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Pro+ Pergola — What to Do If Your Pergola Is Leaking

If your Hansø Pro+ Pergola is leaking, follow these troubleshooting steps to identify the cause, reseal key joints, and restore waterproof performance.

Updated this week

💧 Overview

Hansø Pro+ Pergolas are engineered to handle rain through an integrated drainage system, but minor leaks can occasionally occur—especially during heavy storms or improper sealing.
This guide walks you through standard sealing steps, common causes, and next actions if leaks persist after sealing.


First Steps: Standard Leak Prevention

Before assuming a structural issue, make sure the basic sealing and maintenance steps below have been completed.

1. Apply Silicone Caulk

Use clear, weatherproof outdoor silicone caulk at the following points:

  • Post-to-beam connection points

  • Beam-to-roof bracket joints

  • Any visible screw holes or seams

💡 Tip: Apply a continuous bead of silicone and smooth it with a gloved finger or caulk tool to ensure full coverage.


2. Inspect Drainage Paths

Your pergola features built-in water channels and downspouts inside the frame beams.
Check that:

  • Drain holes are clear of debris or sealant blockage.

  • Downspouts are not clogged by leaves, dirt, or insects.


💦 Still Leaking? Here’s What Might Be Happening

If you’ve already applied silicone and confirmed drainage, one of the following issues may be the cause:


1. Incomplete Sealing

Even tiny gaps or uneven caulk lines can allow water intrusion.

What to Do:

  • Reinspect all joints carefully — especially corners, beam overlaps, and underside seams.

  • Apply a second layer of caulk where coverage looks thin or cracked.


2. Thermal Expansion

Aluminum expands and contracts with temperature shifts, which can cause standard caulk to pull away over time.

What to Do:

  • Use a high-flexibility silicone caulk rated for outdoor metal or aluminum applications (e.g., GE Silicone 2 or DAP 100% Outdoor).

  • Avoid rigid or paintable caulks not designed for movement.


3. Water Wicking Behind Panels or Beams

Water can occasionally travel behind a joint or cap and reappear away from the actual leak point.

What to Do:

  • Inspect the top edges and rear sides of nearby beams.

  • Apply caulk along both the outer visible seam and the backside edge where panels overlap.


📞 Still Need Help?

If leaks persist after completing the above steps, our support team can help diagnose further.
Please contact Hansø Support with the following details:

  • 📸 Photos or video clearly showing the leak location

  • 🕐 Description of when it occurs (e.g., during heavy rain or light drizzle)

  • Confirmation of what sealing steps you’ve already taken

We’ll review your case and provide personalized repair guidance or next steps.

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