Key Takeaways:
- Ensure accurate sizing to optimise airflow and weather protection.
- Also base your sizes on the actual hole size
- Properly seal and weatherproof the louvre to prevent leaks.
Incorrect Louvre Size
The Mistake
Choosing a weather louvre that is too small or too large for the intended opening can lead to inefficient airflow, excessive pressure drops, and ineffective weather protection.
How to Avoid It:
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Measure Accurately: Always measure the exact opening where the louvre will be installed, accounting for any required clearance.
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Consider Airflow Requirements: Ensure the louvre size matches the building’s ventilation needs. Use manufacturer-provided performance data to select the right model.
- Consult a Professional: If unsure, seek guidance from a ventilation specialist to avoid costly sizing errors.
Louvre Orientation
The Mistake
Installing the louvre upside down or at the wrong angle can reduce its ability to block rain and wind-driven debris.
How to Avoid It:
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Follow Manufacturer Instructions: Each louvre has a designated top and bottom—make sure to install it correctly.
- Proper Blade Angle: Louvres are designed with specific blade angles to optimise airflow while preventing water ingress. Check the recommended orientation before securing the unit.
Poor Sealing and Weatherproofing
The Mistake
Failing to properly seal the louvre can lead to water leaks, allowing moisture to penetrate the building.
How to Avoid It:
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Use High-Quality Sealants: Apply a weatherproof sealant around the louvre frame to prevent leaks.
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Check for Gaps: Inspect for any small gaps between the louvre and the wall or ductwork and seal them effectively.
- Test for Water Resistance: After installation, perform a water test by spraying the louvre with a hose to check for potential leaks.
Not Accounting for Airflow Resistance
The Mistake
Some louvres have a higher pressure drop than expected, leading to restricted airflow and reduced ventilation efficiency.
How to Avoid It:
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Choose the Right Louvre Type: Different louvre designs have varying levels of free area (the open space that allows air to pass through). Opt for a model that meets your airflow requirements.
- Check Airflow Ratings: Review manufacturer data on airflow resistance before making a purchase.
Using the Wrong Fixings
The Mistake
Using incorrect or insufficient fixings can cause the louvre to become loose over time, leading to potential damage or detachment.
How to Avoid It:
-
Use Manufacturer-Recommended Fixings: This ensures compatibility with the louvre’s material and mounting surface.
- Secure All Mounting Points: Make sure all screws or bolts are tightened properly to prevent movement.
Frequently Asked Questions
How do I know if I’ve installed my weather louvre correctly?
Check that the blades are positioned correctly, it is fully sealed to prevent leaks, and airflow is not restricted. If unsure, refer to the manufacturer’s guide or contact us for advice.
My louvre seems loose—what should I do?
Ensure all fixings are properly tightened. If installed in a high-wind area, consider additional support brackets or a stronger mounting method.
Water is getting through my weather louvre—why?
This could be due to incorrect orientation, poor sealing, or an unsuitable louvre type.
How often should I check my weather louvre after installation?
Inspect it every 3-6 months for debris buildup, loose fasteners, or weather damage.
Can I paint my weather louvre to match my building?
Yes, you can use powder coating paint which is suitable for aluminium louvres to maintain durability.
How do I remove dirt and debris from my weather louvre?
Use a soft brush or compressed air to remove dust. For tougher grime, wash with mild soapy water and a cloth.
Can I replace just the blades if they get damaged?
In most cases, no. Louvres are designed as single units, so you may need to replace the entire assembly.
My louvre is making noise in strong winds—what can I do?
Ensure it's tightly secured and consider a louvre with acoustic properties if noise is a concern.
Do I need extra weatherproofing for extreme climates?
If you experience heavy rain or strong winds, you may need a deeper-bladed louvre or an additional weather seal.
Can I retrofit a weather louvre to an existing vent opening?
Yes, but ensure the size and mounting type match the opening. Some adjustments may be required.
Need Further Help
If you need additional assistance or have questions about installing and fitting louvres feel free to reach out to us at hello@efans.co.uk
