With the rawl bolt, as the head of the bolt is tightened the bottom sheath expands, gripping the concrete. There is a bolt on the side of the holder that can be done up easily with a spanner to keep the post firm in the spike. Chain link fencing for example, puts a lot of stress on the posts as it is tightened and the post holders would not be secured strongly enough in the ground for this (more on this can be found in our project on Chain Link Fencing). Bolt Down Fence Post Holder

It is also ideal for fixing signposts – again this is the size used by estate agents for their signs. Use the longer length in light sandy soils or for taller posts – higher than 4 feet (1.2M). 75x75mm Post HoldersFor years Metpost or post spikes have been the biggest supplier of fence post holders, or post spikes, but now there is much more of a choice with other manufacturers producing similar products. Fence Post Metal Spike

This allows you to hit the spike as firmly as you like without the risk of bending the sides of the post holder, which would prevent you slotting the post into the holder. While the most common way to fix fence posts is to concrete them in and our project on fence posts shows how to do this, there are many occasions when concreting is not an option. Place your post holder in position and mark through the holes onto the surface below using a permanent marker or similar. This size would be best for fences in exposed areas, long expanse of fencing, gazebos which will be supporting a roof and pergolas if you want a more chunky-looking timber structure. The “shoe” should be set into a 450mm (18 inch) cube of concrete so that the base plate sits flush with the surface of the concrete.

Bolt Down Fence Post Holder

The spiked fence post holders come in different sizes for different posts. You can see a selection of different models above, some with built in fixing bolts (which we prefer) and some which have holes for you to screw the post to the holder, which are usually cheaper. Note: Remember to ensure that you keep the post holder totally level as you drive it down into the ground – more on this below

The base of the post holder will sit on the old concrete and you can then slot the fence post into the holder and tighten the holding screws.

Fence Post Repair Spike

We also have a detailed guide covering the different types of nuts and bolts and how they should be used here. Coated with corrosion protection they are built to last. They are first zinc plated, and then coated in a moisture resistant powder coating, giving a durable protection against rust. The plates have 4x 10mm holes on them to secure them to a surface with our through-bolts or multi-fix hex bolts . There is no need to remove the existing concrete or to add more concrete when you are using these spikes. You can do this using a mallet, protecting the spike using a piece of offcut timber on the top of the spike. Drive the spike into the earth next to the concrete, so the upright section sits flush against the post and the horizontal section sits flush with the ground.