Stone landscaping walls are a great way to beautify your backyard. Plus, they provide a way to effectively level out a sloping yard and create some structure and interest. A well thought out and constructed retaining landscape wall will transform previously awkward slopes into usable areas of your backyard. But, before you reach for a shovel, landscaping walls require a good deal of planning. After all, soil is heavy, especially when wet. Therefore, you can imagine the forces that are going to be bearing down on your wall. It’s for this reason that you need to engage the professionals if the retaining wall needs to over 600mm high. Also, check the regs with your local council too. So, let’s have a look at a few tips for building landscaping walls so you can hit the ground running.
Choose a Material You Can Easily Work With
Landscape walls can be built with a wide range of materials. Choices include timber, concrete, rocks or boulders, bricks and manufactured blocks. For a DIY project, we’d choose the manufactured blocks. They’re not too heavy, they lock together and they’re durable. Also, they’re easy to find at Bunnings or any landscape supplier.
Start with Good Foundations
A stacked-block landscaping wall must be built on a solid, level foundation. You can achieve this by digging a trench a little wider than the wall and filling it with either crushed and compacted rock or concrete. It’s important to check that it’s completely flat and level with a long carpenter’s level. Remember, any discrepancies will show up as the wall gets higher.
Stack the Landscaping Wall Blocks Back Towards the Soil
A wall that’s stacked slightly towards the soil being retained will be much stronger. So, step each row back about 20mm. Using retaining wall blocks makes this easy.
Allow for Drainage
We’re not building a dam here so make sure you allow for water drainage. We all know how crazy the rains can get on the Coffs Coast so it’s imperative the excess water has somewhere to go. A perforated plastic pipe called a drain tile should be installed at the soil-side base of your wall. This will direct any excess water to each end of the wall where it can escape harmlessly.
Backfill over the drainage system and behind your wall with a layer of sand or pea gravel. This will enable any excess water to drain down to the pipe. Finally, fill up the space with the soil.