Honey bee gas flue chimney cutout – Radyr

Removal of honey bees from chimney with gas flue

This is a great example of a honey bee gas flue removal.

The householders only realised that they had this honey bee colony in the chimney when the honey bees started to find there way down the chimney flue to the fireplace and out into the lounge, the bees would then travel to the window and collect on the window sill.

Legal requirements

In these situations when there is a gas fire and a flue liner it is necessary to have the fireplace decommissioned and freed up by a professional on the gas safe register (used to be CORGI) before we can start work and again at the end to recommission the system. Similarly had it been a flue liner for a multifuel stove there is a requirement that a competent person recommission the system, otherwise when you go to sell the property you will need to disconnect the system. You can not even remove the flaunching on the chimney top and adjust the position of the flue within the chimney, without it being necessary for the system to be recommissioned.

In this instance the gas fire had been decommissioned prior to our arrival allowing us to get straight on with the job.


 The chimney flaunching

As you can see in the images at the top of this post the honey bees had been using a break in the flaunching to gain access to the space between the gas flue liner and the chimney. This is not at all uncommon. When you consider how exposed the chimney top is its a surprise really that people don’t have them inspected every 10 or 20 years to ensure they stay in good condition and are fit for purpose. Often we see situations where some work has been done on a chimney by a bogit diy builder who has carried out a repair using building sand, which does not offer sufficient protection.  As a result water gets into cracks, freezes, expands and then melts leaving a larger crack which allows for a repeat of the whole process again.  Resulting in what you see in the above photos allowing for a ‘honey bee gas flue’ infestation.


 Chimney flue liners

It is never easy to remove comb from around a flue liner particularly the corrugated gas flue liners. The longer the bees have been in situ the deeper down the chimney the comb will stretch. Ideally the best words we can hear from the customer in these situations are “you can pull the liner out if you want”.

On this ‘honey bee gas flue’ removal we were fortunate as the honey bees had not been in place for too long and had not built comb too far down the chimney allowing us to clean most of the honey bee wax of the outside of the gas flue liner and the inside of the chimney without having to remove the flue liner.

On completion we flaunched the chimney top ensuring a tight seal so that any returning bees could not find their way back in. During the ‘honey bee gas flue’ removal process a large number of bees that had found their way down the chimney and because of the concern that there may be bees remaining in the flue that would be likely to come out at the bottom via the fireplace into the lounge it was decided that the best course of action would be to treat the chimney space with a natural short residual ULV (ultra low volume) insecticide treatment to ensure any laggers wouldn’t make themselves known while everyone was relaxing in the living room. This was quite feasible as we had completely sealed any possible external entry points.

At the end of the day we had successfully completed another ‘honey bee gas flue’ colony removal from a chimney lined with a gas flue, successfully re-homing the honey bees in our apiary.


For further information on bee removal and relocation please use the contact form in the side bar or

call 02922 401649 to speak to someone local who knows all about it.

If you are looking for more info on removing bees from a chimney check out our article Removing bees in a chimney, for information on bee removal and relocation from roofs you may want to look at our page Honey bees in roof, or if you have bees in a wall our page Honey bees in wall maybe of use, For additional examples on removals of honey bees from other more unusual places check thru our blog page Honey Bee Removal EXPERTS and search for “unusual bee removals”.