
We have been making concrete sleepers for 25 years and have manufactured over 3 million of them. It’s no wonder we are so good at what we do.
The stronger the concrete, the more durable your retaining wall will be. With decades of experience, we manufacture the strongest concrete sleepers in the industry.

When it comes to helping you with your landscaping project, we know our products inside and out. So for friendly advice and fast order turn around – call us today.
Outback Sleepers is one of the leading Concrete Sleeper Retaining Wall suppliers in Adelaide and Sydney with 25 years of experience. We have grown to become one of the largest sleeper manufacturers of Concrete Retaining Wall Solutions in Australia.
Our unwavering commitment is to provide the highest quality products, unmatched customer advice and support, and industry-leading reliability. We understand the importance of having our product range always in stock and ready for delivery in Adelaide and Sydney, and we strive to meet this goal every day.
The construction of one or more retaining walls will be an essential part of a new home or garden landscape. It is often one of the first projects undertaken and one of the costliest and hardest to fix if not done correctly the first time. For this reason, your retaining wall must last as long as possible.
We firmly believe that concrete sleepers are the superior choice for retaining walls. Their strength, durability, and resistance to rot and pests make them the ideal solution for homeowners, builders, and landscapers looking for a long-lasting, low-maintenance retaining wall. They combine structural integrity with design versatility, allowing them to complement any architectural style and setting them apart from other retaining wall solutions.
Our modern manufacturing techniques allow us to provide customers with sleepers that use industry-leading 60MPa concrete. We batch our concrete at our plant in South Australia, which enables us to monitor and control our concrete closely. Our sleepers easily surpass the Australian standard and the strength of our competitors’ products, making them one of the most durable retaining wall sleepers on the market.

Reinforcing Bars
All our sleepers have 2 x N10 Reinforcement bars throughout the sleepers
*Cribs have 1 x N10 Reinforcement bar
50 Year Product Lifespan
We manufacture our sleepers to the Australian standard AS3600/2018 which means that our sleepers are designed for a 50-year product lifespan.
Exceptional Strength
Industry leading concrete strength of 60 MPa.
*50% stronger than 40 MPa concrete (based on equivalent dimensions).

1. Reinforcing Bars
All our sleepers have 2 x N10 Reinforcement bars throughout the sleepers
*Cribs have 1 x N10 Reinforcement bar
2. 50 Year Product Lifespan
We manufacture our sleepers to the Australian standard AS3600/20018 which means that our sleepers are designed for a 50-year product lifespan.
3. Exceptional Strength
Industry leading concrete strength of 60 MPa.
*50% stronger than 40 MPa concrete (based on equivalent dimensions).

1. Reinforcing Bars
All our sleepers have 2 x N10 Reinforcement bars throughout the sleepers
*Cribs have 1 x N10 Reinforcement bar
2. 50 Year Product Lifespan
We manufacture our sleepers to the Australian standard AS3600/20018 which means that our sleepers are designed for a 50-year product lifespan.
3. Exceptional Strength
Industry leading concrete strength of 60 MPa.
*50% stronger than 40 MPa concrete (based on equivalent dimensions).
We’ve been dealing with Outback Sleepers for almost 6 months, we have had no troubles with them what so ever. Stephen is the main person we deal with there, he is absolutely amazing at his job, always replies straight away if there is an issue with the order or confirming the date we can expect our order. Stephen makes dealing with outback extremely easy ☺
Jessica Cross, Mighty M
We have used Outback Sleepers since 2007 and have found their products to be of the highest quality & to exact length and height, allowing us to construct a wall that’s always flat with lines that match up. We find they have an extensive range of styles and colours that are always in stock giving us more variety of choice. Their team always provides excellent and professional customer service, making the overall experience for us and our customers amazing. We always use Outback Sleepers for our jobs and recommended them as our preferred supplier.
Darren Langsford, Complete Retaining Walls Pty Ltd
We’ve used Outback Sleepers Australia for the last couple years because they manufacture the highest quality sleepers. We're a small-to-medium size retaining wall company in Adelaide, and they make ordering sleepers easy. They always deliver when they say they will, making our construction timeline predictable. On the very rare occasion a concrete sleeper is chipped or not 100% perfect, they bend over backwards and do everything they can to fix it right away. Their quality, service & ability to handle large orders in short time frames has enabled us to grow our company.
Martin Mucha, Director, Active Fencing and Retaining
I'm very happy with the high level of customer service I always receive at Outback Sleepers Australia. The paperwork is consistently correct and my orders are always packed up and ready for collection when I require them. There's never any fuss - I sign for my orders and I'm soon on my way.
Brian Hunter, Bridge Building Supplies
We have been dealing with Outback Sleepers Australia for over 20 years and we have found them to be a very supportive and professional organisation. They have a great range of products and the engineering specifications to back up their products. Orders are always delivered on time and the price is great. As a reseller of Outback Sleepers Australia, we are not treated like another customer but treated as a trade partner working together.
Theo Kyriazis, Newtons Building & Landscape Supplies
Outback Sleepers provide impeccable service and have not let us down on any occasion. The wide range of quality products makes it extremely easy to meet project engineering requirements. I have also found their delivery service to be very reliable and professional.
Mitchell Long, Project Manager, Diverse Civil & Commercial Projects
I visited my house at Crafers last night and all good with the retaining wall. I am so glad we managed to come to the arrangement. I appreciate your follow up, service and, of course, your offer to fix it. Five stars to you and the company.
Martin, Crafers
We appreciate Outback Sleepers as a business that values every customer as just as important as the next, big or small!
Doug Chetwynd, Aldinga Landscapes
I have been using Outback Sleepers for my Retaining walls and Under Fence Plinths now for about 2 years, The detail to there finished product is second to none, and there pricing is very competitive, I highly recommend giving Outback Sleepers a chance to quote next time you are thinking of Tendering your next Retaining wall.
Simon, Butterfield Fencing
Stephen, it has been an absolute pleasure dealing with you and Outback Sleepers. You have always been very prompt in your replies to emails and very helpful with all questions asked regarding the product. I believe your knowledge of the product is substantial and hope to continue dealing with you into the future.
Anthony Ball, BuildPro Sunraysia
I have been working with Outback Sleepers for over 8 years now and have had a great relationship with them. They have always provided great products and always keeping the quality up where it needs to be for us builders. They are the market leaders and their products are head and shoulders above the rest. Looking forward to many more years of working together.
Bruce Colbert, Retaining Wall Builder
I’ve dealt with Steve on the phone ever since he has worked for Outback Sleepers and have always found him a pleasure to deal with. I believe he represents Outback Sleepers in a very professional manner, and is an asset to the company.
Stuart Fletcher, Fletcher's Landscaping
You can be proud of your staff whom at the forefront of communication handle orders with utmost professionalism. Furthermore, it's nice to know we can rely on a premium grade product that makes our life easier.
Gary Offley, Retaining Wall Industries (Civil) Pty Ltd
We have been using outback sleepers for all of our Under Fence Plinths and small retaining wall supplies. We like to use them because they always have the items we need in stock, they deliver my product on time and their staff are all friendly and very helpful.
Lee Benson Fencing







