Things to remember when building a sandstone retaining wall

Building a sandstone retaining wall is very simple compared to other retaining walls. In most cases, it's as easy as lining the blocks up and fitting each block on top of the other until you reach your desired height and length. However, there are some situations that can make this process more difficult. Here are a few things to keep in mind when building a sandstone retaining wall.

Choosing your blocks

Choose what grade of block you order carefully as the different characteristics of each grade can affect how your wall should be built (more info about each grade is on our A-Grade and B-Grade pages).

Block weights

Ensure the block size you choose is heavy enough to resist the pressure being applied from behind the retaining wall (approx. block weights are on our A-Grade and B-Grade pages).

Foundation

The most important thing is to create a solid foundation to ensure your blocks don’t compromise the wall’s structural integrity by shifting. Each case can vary depending on the site. Firstly, It would depend on the composition of the “natural ground” where the blocks are being laid. If it is a basic soil/clay, etc. foundation, and especially with ground water running behind, then we suggest using a compacted road base at a minimum to help stabilise the footing.

Drainage

Ensure your wall has proper drainage to stop water from collecting and increasing the weight of the earth behind it, therefore increasing the pressure and compromising the structural integrity.

Plan your tiers

For multi-level walls, ensure you plan each tier properly so that the top tiers don’t add too much pressure to the bottom tears.

As we only supply and deliver sandstone, it is best to seek advise from an experienced retaining wall installer who has assessed your site. Message or call us today and we can recommend the type and quantity of sandstone you need to complete your project, deliver it, and we can also organise an installer for you.

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