Identifying if Your Fence is Asbestos
Asbestos remains to be the most common material used for fences if your home fence was built before the end of the 1980s.
Asbestos is known to be harmful and is frequently used in roofing, ceilings, walls, and fences. To make sure there are no exposed fibres, it is crucial to either repair or seal an asbestos fence. To begin with, you must distinguish between Hardie Fence, Super Six, and Asbestos Containing Materials (ACM).
Hardie Fence, Super Six, and Asbestos fencing all appear to be extremely similar to the untrained eye. Hardie fence and non asbestos Super Six are not a cause for concern, unfortunately, non asbestos Super Six was released in 1986 and is basically a duplicate of an what an asbestos fence sheet looks like without containing any asbestos. This profile was used for approximately 5 or 6 years until Hardie Fence was released with a bigger corrugation. Asbestos fencing needs extra care and, in most situations, should only be removed by a licensed asbestos removal contractor like Fosters Fencing. To differentiate between the different types of fibre fencing, there are a few key factors to look out for
- Fence Capping – Asbestos fences quite often have fibre cement capping, while Hardie fence has a metal capping. Older Super Six and Asbestos fences may not have capping; however, if your fence has a fibre cement capping, then you can be certain this is Asbestos. Be wary, as sometimes a previous owner may have put metal capping on an asbestos fence.
- Number of Ridges – You can tell the difference between Asbestos fencing and Hardie fence is by counting the number of ridges, as Hardie fence has 5 ridges, Super Six (Non Asbestos) and Asbestos has 7 ridges. Hardie fence with the bigger corrugation is 100 percent asbestos free.
- Fence Surface – Asbestos will have a hessian crosshatch-like surface pattern resembling the texture of snakeskin. The surface of Hardie fence or Super Six (Non Asbestos) can have little dimples on the sheets in a linear pattern, found on one side only.
- Diamond Shaped Metal Washers – Usually, Asbestos fences were fastened together using diamond-shaped metal washers to keep them held in place. During the change from using Asbestos to Super Six diamond-shaped washers were still used on fences.