How Much Clearance is Needed For a Retractable Awning?
A retractable awning is a valuable addition to many Australian homes and outdoor spaces. It provides protection from the sun, shelter from light rain, and adds an aesthetic touch to patios, balconies, and gardens. However, one crucial factor often overlooked during installation is ensuring there is enough clearance for the awning to operate properly.
Clearance is essential to prevent any obstructions when the awning extends or retracts and to allow proper airflow and functionality. In this guide, we’ll explore the different types of clearance needed for retractable awnings and other considerations to ensure smooth operation and durability.
Understanding Clearance for Retractable Awnings
Clearance refers to the space required around the retractable awning to ensure it extends and retracts smoothly without hitting walls, doors, windows, or any other structures. This involves both vertical and horizontal measurements and may vary depending on the type of awning, its size, and the location where it will be installed. Let’s explore each type of clearance in detail.
1. Vertical Clearance
Vertical clearance is the space between the top of the awning and any overhead obstructions, such as eaves, roofs, or balconies. Most retractable awnings are mounted on a wall or under an eave, so it’s essential to make sure there’s enough room for the awning to sit securely when fully retracted and still allow room for it to extend fully.
Generally, the recommended vertical clearance for a retractable awning is about 30 to 45 centimetres from any overhead structure, but this can vary based on the awning's specific model and size.
For installations under eaves, it’s important to check the depth of the eave and ensure that the brackets holding the awning can be installed without interference. If the eave is too deep or low, a custom installation bracket may be needed to provide extra clearance.
2. Horizontal Clearance
Horizontal clearance is the space to the sides of the awning. This is important to ensure that the arms of the retractable awning can extend fully without hitting side walls, fences, or other objects. For most models, you should allow for a minimum of 25 centimetres of clearance on either side of the awning. However, some awnings with larger arm spans or extra features may require more space.
In narrow spaces or close quarters, there are options like semi-cassette or full-cassette awnings, which offer a more compact design. These types of awnings can help reduce the need for as much side clearance while still providing adequate sun and rain protection.
3. Projection Clearance
Projection refers to the distance the awning extends outward from the wall when fully opened. This measurement is crucial to ensure that the awning covers the desired area without extending into unwanted spaces or onto neighbouring properties. The standard projection for a retractable awning can range from 2 metres to 4 metres, depending on the model.
Before installation, you’ll need to assess how much space is available for the awning to extend and whether there are any objects in the way, such as trees, outdoor furniture, or fences. It’s important to take accurate measurements, as some models require additional clearance beyond the awning's projected length to account for the arms or mechanism.
Other Key Considerations
Mounting Height
The mounting height is the height at which the awning is attached to the wall or structure. It plays a critical role in both clearance and function. In Australia, the general recommendation is to mount the awning at a height of 2.5 to 3 metres from the ground, depending on the space and intended use. This allows for sufficient headroom underneath the awning when it’s fully extended.
The slope of the awning is also a factor in determining the mounting height. Awnings should have a slight angle (usually 12 to 15 degrees) to allow water to run off and prevent pooling, which can damage the fabric over time.
Wind and Weather Considerations
While retractable awnings are designed to provide shade and shelter from light rain, they are not intended to withstand high winds or heavy rain. In areas prone to strong winds, like coastal regions in Australia, it’s important to install wind sensors or manually retract the awning during unfavourable weather. Ensuring that there is enough clearance around the awning will make it easier to retract the awning safely during sudden weather changes.
Custom Installations
In some cases, standard clearance measurements may not work due to specific architectural features, such as curved walls, pillars, or uneven surfaces. Custom installations, where special brackets or support systems are used, can help resolve these challenges. It is always a good idea to consult with an expert or awning professional to ensure the installation is suitable for the specific environment.
Ensuring Proper Function and Longevity
The correct clearance not only ensures smooth operation but also affects the awning’s longevity. Without sufficient clearance, the awning’s arms or fabric could get caught on obstructions, leading to wear and tear. Over time, this can reduce the efficiency of the awning’s retracting mechanism and may cause the fabric to fray or rip. Maintaining appropriate clearance also helps with ventilation around the awning, reducing the risk of mould and mildew growth, which can occur when moisture gets trapped around the fabric.
Final Thoughts on Installing Retractable Awnings
Ensuring enough clearance for a retractable awning is essential for its function, durability, and safety. By understanding the importance of vertical, horizontal, and projection clearances, you can install your awning with confidence, knowing it will provide the shade and comfort you need without the risk of damage or malfunction. Taking the time to measure carefully, consider the surrounding environment, and consult with professionals when necessary can ensure that your awning serves you well for many years to come.
