Why use HARDAZ Retaining Systems?

HARDAZ Retaining Systems provide a simple and easy solution for creating solid timber retaining walls.

Each retaining post ensures a tight and secure fit for each sleeper, with no packing or fastening required.

All HARDAZ Retaining Systems products are made from galvanised steel, to guarantee long-life durability and strength.

A recess in each post allows for adjustment to ensure you get the perfect fit every time and to compensate for future timber movement and shrinkage.

Our range suits both 50mm and 75mm wide sleepers and is versatile enough to build walls from one to five sleepers high.

How to build a Retaining Wall

Simply decide whether you need 50 or 75mm thick sleepers and the height of your wall.

Then choose which posts you require to finish the job.

How to plan a Retaining Wall

1. Check with your local council regarding any compliance requirements. Where a large amount of earth is to be retained, it is recommended that an engineer be also consulted.
2. Draw up on paper the desired retaining wall. Where possible use readily available sleeper lengths to avoid having to cut sleepers.

How to construct the Retaining Wall

1. Clear the area and mark out the line of the wall using the string line.
2. Dig out a channel so that the bottom sleeper can be embedded 100mm into the ground.
3. Measure out and locate post positions. Dig the holes for the posts.
4. Starting at one end of the wall, insert the appropriate post and concrete into position ensuring that it is at the required height and vertically level.
5. Before moving onto the next post, place into position the intervening bottom sleeper. That will allow the next post to be better positioned. Using the string line and level ensure the post is horizontally and vertically level, then concrete into position. Repeat procedure for remaining posts.

What I need to create a Retaining Wall 

1. Make a list of the number and size of sleepers required to cover the height of wall, also allow for the bottom sleeper to be embedded 100mm into the ground.
2. Make a list of the number and type of posts required (see diagrams A & C). The height of posts should be double the height of the retaining wall, meaning that half of the post should be below ground level.
3. In addition to the sleepers and posts, you will require quick-set concrete and the following tools:
   1. Shovel or post-hole digger;
   2. Tape measure;
   3. String line and level.

When do I need to get an engineers report for my Retaining Wall?

For any wall above 1m high, and also if the wall is being built on a slope that is holding back considerable weight, it is recommended to have an engineer’s report.

What is the thickness of the Retaining Posts?

Retaining posts are 2.5mm thick.