Asbestos fences usually have 7 ridges per 1-meter wide panel, while Hardifence fences manufactured after 1990 only have 5.Fence contractors used Super Six fences from the 1950s to around 1985, after which they were replaced by a very similar-looking fencing product, also known as Hardifence. However, if the fence has a metal cover, the fence is most likely made of Hardifence and does not contain asbestos. If you can make a mark on it, then that's a good indicator that you're Hardifence rather than Super Six. The Super 6 asbestos fence will have the appearance of a dense and consistent material, while Hardifence has more layers and it looks like papier-mâché.
In the early days, the resistance was marked on a section of the fence sheet with the words “made without asbestos” or a similar type of mark to make it clear that the fence does not contain asbestos, while the Super 6 fence has no marks. In addition, broken Hardifence edges tend to have a layered appearance, probably due to the manufacturing process. As a result, Hardifence's broken edges almost resemble the appearance of torn cardboard with a soft, fuzzy edge. While this blog can help homeowners determine if their fences are Super Six or hardened fiber cement fences, the most accurate means of testing is to speak with an asbestos professional.
These fibrous bundles can be seen protruding near a break point or, sometimes, at an edge of the sheet. In contrast, the cellulose fibers used in Hardifence tend to bond more evenly and fiber lengths tend to be shorter and not as strong. Hardness is usually not fixed to each other and, if it does, it is with the use of clips under the metal cover, while asbestos sheets for fences are usually fastened with diamond washers and bolts on the top and bottom of each sheet. However, in many cases there are 5 quick checks to help you confirm if your fence is a Super Six asbestos fence or a HardiFence.
HOW TO DIFFERENTIATE BETWEEN SUPER SIX AND HARDIFENCE For the inexperienced eye, Super Six and Hardifence they look quite similar. The surface texture of a Super Six asbestos fence has snake-like skin, while Hardifence has visible dimple marks.
