Bat Entanglement Research Project
We were invited to submit our Thatch Firewall Membrane as part of the research project that Stacey Waring at the University of Reading has been running for the past few years. Stacey is a research engineer co-supervised by the Technologies for the Sustainable Built Environment Centre (TSBE) at the University of Reading and the Bat Conservation Trust.
The research is centred around the question ‘what constitutes a bat friendly breathable roofing membrane? The project was set up following reports of bats becoming entangled in fibres that had been pulled loose from breathable roofing membranes (BRMs), since then further concerns over microclimate and membrane longevity have been raised. Whilst there is currently no answer to this question, it is hoped this project will help develop clear guidelines for the use of BRMs in bat roosts.
Bat Entanglement Statement
Due to our membrane being part of the research for the past couple of years, Stacey has kindly approved the statement detailed below:
Stacey Waring at the University of Reading has researched this area and concluded that all non-woven breathable roofing membranes (BRMs) pose an entanglement threat to bats. This is due to the continuous polypropylene filaments that make up these products.
Thatch Firewall supplied by Thatching Advisory Services, however, is made from woven fibreglass which is then coated. Stacey Waring has confirmed that this membrane has no filaments that pose any entanglement risk to bats.
Links for additional information
Stacey’s website www.batsandbrms.co.uk
The bat conservation trust www.bats.org.uk
It was also pointed out that in terms of Bats it is important to stress that our Thatch Firewall Membrane is not a traditional breathable roofing membrane, but a fire barrier membrane that happens to breathe!
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