Graphical Construction Glossary >> Roofs and roofing. >> Roof Features >> vermin proofing

Vermin proofing: Protecting a building against the entry of rats and mice and other vermin. Particularly at the eaves. Usually by expanded metal mesh. This is mandatory under the BCA in Australia.

Mesh is used where the eaves are unlined of course. When access to the roof is sealed by the cladding or sheet lining then that does the job.

Any type of mesh will do for this job, but the mesh in the photo, known as expanded mesh, is ideal because it keeps it's shape fairly well in the flat sheet, but when it is made to size with a couple of folded turns to make it into a flat "U" shape it is firm and easy to work with. The mesh can be cut easily with tin snips.

Any opening like at eaves, ridge and gable vents should also have some sort of mesh protection.

The Author years ago had to line the eaves and mesh various odd openings in the roof of a house that was regularly inhabited by possums. While the noise of them moving around at night was unsettling for the owners, it was the flea infestation that prompted the work to be done.

For a neat looking job and by far the easiest way is to fix the mesh from the roof before the roof sheeting is installed.

Another way of complying with the regulations is of course to line the eaves with compressed cement sheets.

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Please Note! The information on this site is offered as a guide only! When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area. It could be out of date! Regulations breed faster than rabbits!
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