Should Pergolas Be Open or Closed in High Winds?

High winds and pergolas—an outdoor drama waiting to happen! So, should pergolas be open or closed in high winds? The short answer: open, for better airflow and reduced pressure. But wait! From design tricks to the sturdy charm of an aluminium pergola, there’s plenty to explore. Let’s weatherproof your outdoor oasis!

Open or Close Your Pergola in High Winds? A Safety Guide

Picture this: your beautifully crafted pergola standing proud in your garden, the centrepiece of your outdoor space. Then, out of nowhere, the wind starts howling. Will your pergola hold its ground or turn into a casualty of the storm? The short answer to the question "Should pergolas be open or closed in high winds?" is: it depends on the design and conditions. Let's unravel the secrets to keeping your pergola safe and sound when the wind picks up.

Understanding the Forces of Wind on a Pergola

Wind Uplift

Wind doesn’t just push—it can also lift. When strong winds sweep over a pergola with a solid roof, they create upward pressure, known as wind uplift. It’s a bit like the wind trying to turn your pergola into a kite! Without secure anchoring, this force can lift roof panels or even dislodge the entire structure.

Wind Loading

Horizontal forces, called wind loading, can push against the pergola's frame, causing swaying or bending. If the structure isn’t up to the challenge, the pressure can lead to collapse. The taller or more exposed your pergola, the greater the risk.

Importance of Secure Anchoring

Anchoring your pergola is non-negotiable. Whether it’s fixed into concrete footings or reinforced with heavy-duty brackets, a well-anchored pergola is far less likely to become a windblown hazard. Think of it as giving your pergola sturdy boots to weather the storm!

Pergolas with Different Roof Types in High Winds

Open Pergolas (No Roof or Open Lattice)

Minimal Wind Resistance

Open pergolas are the wind’s best friend—they let it flow right through without resistance. These designs are a solid choice for windy areas, as there’s no surface for the wind to grab onto.

Importance of Secure Posts

Even with minimal resistance, don’t skimp on strong posts and secure fixings. The last thing you want is your pergola dancing across the garden during a storm.

Pergolas with Solid Roofs (e.g., Polycarbonate, Metal)

Increased Wind Uplift Risk

A solid roof might look sleek, but in high winds, it’s like putting up a sail. Wind uplift can easily take hold, increasing the risk of roof panels being ripped off.

Importance of Secure Fastenings and Strong Structure

To counteract these forces, you’ll need a rock-solid frame and high-quality fastenings. Without them, the entire structure could suffer significant damage.

Potential for Damage if Not Secure

An improperly secured solid-roof pergola is a disaster waiting to happen. Panels could tear off, leaving a mess (and a repair bill) in their wake.

Pergolas with Retractable Canopies/Awnings

Retract the Canopy in High Winds

When the wind starts picking up, retract that canopy immediately. Leaving it open during a storm is a surefire way to damage the fabric or even the mechanism.

Secure the Retracted Canopy

Once retracted, make sure it’s secured tightly. Flapping fabric isn’t just noisy—it can cause unnecessary wear and tear.

Pergolas with Louvered Roofs

Open the Louvers (Partially or Fully)

Adjustable louvres are brilliant for wind management. By opening them, you let the wind pass through rather than pushing against a solid surface.

Avoid Fully Closing Louvers in Extreme Winds

In high winds, closing the louvres completely is a no-go. It creates a solid surface, increasing the chances of wind uplift wreaking havoc.

General Safety Precautions for Pergolas in High Winds

Regularly Inspect Your Pergola

Don’t wait for disaster to strike. Check for loose fastenings, cracks, or signs of wear regularly. A little maintenance goes a long way in ensuring your pergola stays storm-ready.

Trim Overhanging Branches

Overhanging branches might look charming, but in high winds, they can be your pergola’s worst enemy. Keep them trimmed to avoid unwanted damage.

Secure Loose Objects Around the Pergola

Patio furniture, planters, and decor can quickly become airborne missiles in a storm. Secure or store them to keep your pergola (and your garden) safe.

What to Do After a High Wind Event

Inspect for Damage

Once the winds have settled, give your pergola a thorough once-over. Check the roof, posts, and fixings for signs of damage. Catching issues early can save you from bigger headaches later.

Contact a Professional if Necessary

If the damage is extensive or you’re unsure about the safety of your pergola, call in a professional. It’s better to be safe than sorry when it comes to structural integrity.

Conclusion

When high winds are in the forecast, the best approach depends on your pergola’s design. Open or partially open roofs, like louvres or retractable canopies, are generally the safest choice as they reduce wind resistance. Solid-roof pergolas require robust construction and secure fixings to weather the storm.

Whatever your pergola type, regular maintenance, secure anchoring, and proactive storm preparation are the keys to keeping it standing tall. With these tips in mind, you can relax and enjoy your outdoor space, rain or shine—or even in a bit of a breeze!