A new treatment for Death Watch Beetle

22 August 2019

In a guest post, Martin Cobbald, Managing Director of Dealey & Associates Ltd, writes about a new way to deal with Death Watch Beetles.

Like many of you, I recently saw the National Churches Trust video, narrated by Michael Palin, warning of the dangers of church dilapidation from leaking rooves, crumbling stonework and Death Watch Beetle.

Michael Palin © John Swannell
Michael Palin © John Swannell

It made me sit up because we have recently been working on a solution for exactly this kind of problem. I work for a fumigation company in Suffolk called Dealey Environmental. In our 65-year history we have maintained our place at the forefront of fumigation technology and we proudly employ the largest fumigation team in the UK.

Blueflame

Recently we have been working with a chemicals manufacturer in the Czech Republic to create the perfect building fumigant and we believe we have done it. Our friends in Czechia have followed the process devised by Nobel award winning Fritz Haber to create Bluefume, a structural fumigant for all life stages of wood boring beetle. The product was approved for use by the Health and Safety Executive (HSE) late in 2016 and we are currently undertaking pilot fumigations throughout the UK.

Traditional pest control treatments for churches usually involve paint-on or spray-on wood treatments that are like creosote wood stain. They kill very effectively but they leave toxic residues in our churches for many years. Furthermore, the only parts of the wooden structure that are treated are the visible parts. Further damage could be happening in those timbers that are in the middle of the structural elements of the building that cannot be painted.

Recently we have investigated a water mill that had been treated with paint-on chemicals for Death Watch Beetles. The main shaft was a thing to behold. The apple tree felled for its installation must have been a giant. After the treatment however, the owner had heard more sounds of Death Watch and he asked us to investigate.

Death watch beetle get their name from infesting wooden coffins and making their characteristic tap-tapping overnight, as if watching over the dead.  
Death watch beetle

We used thermal imaging technology to reveal the cause, the beetles on the outside of the timbers had been killed by the paint-on treatment but the core of the shaft remained under attack from happy and healthy beetles.

It is this problem that we wish to avoid for churches. Bluefume is a non-invasive treatment- there is no drilling, cutting or any woodwork at all required. We simply sheet over the entire building and apply the gas. The gas penetrates through timbers and right into the unreachable places where the insects lurk.

The whole treatment takes about two days and does not leave any toxic residues.

The gas kills all life stages of beetles, even eggs, and is lethal to any rodents that might be lurking as well.

Bluefume is also mightily cheaper than the other structural fumigant on the market, Sulfuryl Fluoride, which is so expensive it pretty much rules out any question of its use.

We believe we have struck upon the right solution for the problem of Death Watch Beetle in churches.

For more information contact:

E-Mail:            martin@dealey.co.uk

Homepage:   www.dealey.co.uk

Articles on this blog do not constitute an endorsement or approval by the National Churches Trust of any product or service to the exclusion of others that may be suitable.

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