Post Bases

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POST BASES

Post Mix

How much post mix you will require depends upon the size of the hole that has been dug to place the post in to. As a rule of thumb one bag of post mix will be suitable for each 75x75mm post, larger posts may require one and a half bags per hole. Post mix is quicker and easier than using a ballast and cement concrete mix because it is a pre-mixed bag and sets quickly. Ballast and cement is still the chosen medium for many professional fencing contractors who are installing large quanitites of fencing as it is more cost effective, but for smaller quanitites post mix has many advantages. 

Metposts

Metposts come in two broad categories relating to how the fence post is held into the metpost fence post base. With the traditional wedge grip metpost the post is driven into the metal base and held in by the design, once driven in is difficult to remove a fence post from a metpost base until it has deteriorated many years later. The second type of metpost base is the system 2 metpost, where the post is clamped into the metpost base using two nuts and bolts, which are provided. Another thing to bear in mind with metpost bases is to choose the right length of fence post. Fence post spikes are most commonly used with lap panels using 75x75mm timber posts. The fence posts can be cut off to the correct level after they have been installed by trimming the top of the posts with a saw. The top of the post should then be re-treated with an end coat to protect the cut end and to ensure a long life. Bolt down metpost bases are often used for constructing things like bin storage areas where you are often erecting fencing on a concrete surface and often in a square. Metposts can be used on tops of walls, but be careful because many walls have a brick on edge running along the top of them and if you fix to these then your fence will only be as strong as the mortar holding the bricks onto the wall. In these situations it can often be better to fix the fence post down behind the wall using the metpost at ground level, if you want to project the fence out over the wall, fix an additional timber post to the front so that the two timber posts are joined together.