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Flue Cage – FAQs

Check out some of our responses to frequently asked questions regarding flue cages. Remember, if you can’t find the answer you need, don’t hesitate to get in touch with us for expert advice and support you can trust.

What is a Flue Cage?

A flue cage is a protective covering installed around the external part of a boiler’s flue. It’s designed to shield the flue terminal from external damage and prevent birds or debris from entering and blocking the flue.

What Does a Flue Cage Do?

It primarily serves as a safety feature, protecting the flue terminal from external impacts and preventing blockages, thus ensuring efficient and safe operation of the boiler.

How Do I Know If I Need a Flue Cage?

A flue cage is needed if your flue terminal is within reach or in a location where it’s likely to be tampered with or damaged. It’s also important if there’s a risk of birds or debris entering the flue.

Can I Fit a Flue Cage?

Installing a flue cage typically should be done by a qualified professional, preferably a Gas Safe registered engineer. This is important to ensure that the installation complies with safety standards and regulations. While it might seem like a simple task, incorrect installation could lead to safety risks or impact the efficiency of your boiler system.

What Are the Flue Terminal Guard Regulations?

Regulations often state that if a flue terminal is within reach or in a position where it could be damaged or obstructed, a guard or cage must be fitted for safety.

What are the Flue height requirements?

Boiler flue height requirements focus on keeping the exhaust fumes away from windows, doors, and anything that could be a safety hazard. Here’s a breakdown of the key points:

• Minimum height: In general, the flue terminal should be at least 300mm above the ground or rooftop.
• Distance from openings: The flue needs to be positioned a safe distance away from openings like windows, doors, and air vents. This is typically around 300mm horizontally from the opening.
• Higher floors: If the flue terminates on a higher floor (not ground floor), it must be at least 1200mm away from any doors or opening windows.
• Public spaces: For ground floor installations, if the flue faces a public walkway or space, it must be a minimum of 2.1 metres above ground level.
• Neighbouring properties: The flue should be positioned at least 600mm away from any neighbouring properties.

Remember, these are general guidelines. For the most up-to-date and accurate information, it’s important to consult the current building regulations in your area.  A qualified boiler installer can ensure your flue meets all safety standards and is positioned for optimal performance.

Is a Flue Cage Included in the Boiler Price?

No, a flue cage is not included in the fixed price of the boiler. It is considered an additional item and can be added to your order at checkout. This allows you to customise your purchase based on your specific installation needs and requirements.