About Us Wonder Walls is the oldest established manufacturer and installer of precast reinforced concrete panel and post retaining walls in Western Australia. Our Supervisors and Estimators have had extensive experience as subcontractor installers prior to joining Wonder Walls, and our factory and administration teams bring a wealth of experience to the business. Established in 1983, we produce one of Australia’s lightest, thinnest and strongest earth stabilisation systems, making it suitable for a wide range of applications, including: Tiered retaining walls Garden Edges Retaining where space is limited Terracing steep slopes Replacing termite-infested sleepers Our factory and sales centre is located in the Perth suburb of Carlisle. Our installation service covers the entire Perth metropolitan area from Quinns Rock in the north to Dawesville in the south. However, DIY products can be delivered to anywhere in WA. Wonder Walls has delivered to customers from Esperance to Kununurra to Christmas Island. The Builder's Choice At Wonder Walls we are proud of our reputation as a leading manufacturer and installer of quality retaining wall systems. Our highly skilled and experienced team is recognised throughout the building industry for consistently delivering exceptional service. We are constantly striving for service excellence and achievement and believe in getting the job done right – first time, every time. Our clients, amongst others, include: Pindan Construction Plunkett Homes Highbury Homes Gemmill Homes Metrostyle BCG Residential Summit Homes Dale Alcock Homes Peter Stannard Homes Webb & Brown-Neaves Scott Park Homes Impressions Ventura Homes Blue Print Homes Installation Wonder Walls precast concrete retaining walls are easy to install. Wonder Walls are strong, durable and maintenance free. Plus, retaining walls that we install are GUARANTEED for 5 years! Contact us for a FREE site inspection, measure and quotation (no obligation). While Wonder Walls can arrange for the installation of your retaining wall, if you choose to do it yourself, there are some things you need to know. Comprehensive step-by-step installation instructions are available on request. Installation dos and don’ts: Backfilling behind a wall can only be done once the postholes themselves have been backfilled for at least 19 hours. Backfill is to be clean sand only. Backfill containing any other material i.e. rubble, stone, tree branches etc. is likely to cause damage to panels. Mechanically backfilling any closer than a distance equal to the height of the wall is not allowed unless the wall is adequately propped at the posts and at the centre of the panels during compaction. In all cases compaction must be only done in no more than layers of 300mm at a time. A precast concrete post and panel retaining wall system is designed to hold up properly compacted earth. It is not able to hold up any surcharge loading without running the very real risk of damage that would later require remedial work. This surcharge loading includes the following: Pay loaders, heavy machines or brick carters driving along the top of the backfilled wall. Heavy loads being deposited immediately behind the wall e.g. pallets of bricks. Use of the retaining wall as a base for constructing scaffolding or framework. Fencers using the panels as leverage points when installing a fence. Fence posts with concrete footings need to have a cushion of sand between footings and the panels. The retaining wall could be damaged should any of the above occur. Finally, the concrete posts resting in properly compacted ground hold up this system of retaining. Drainers, in particular, must avoid undermining retaining walls when trenching or installing pipes. Versatility In addition to their incredible strength and durability, Wonder Walls offer exceptional versatility. Manufactured from pre-cast concrete, Wonder Walls are easy to install and aesthetically appealing, making them Western Australia’s favourite retaining wall solution. With Wonder Walls, the possibilities are endless! Wonder Walls are attractive and affordable, and the ideal solution for: Tiered retaining walls Garden Edges Retaining where space is limited Terracing steep slopes Replacing termite-infested sleepers Product What are Wonder Walls? The Wonder Walls system comprises factory precast steel reinforced concrete posts and panels. These components are assembled on site using a cantilevered configuration, which is able to retain up to 1.5 metres. How are they erected? The posts are normally 130mm square and spaced at 1150mm centres. In most cases the posts are twice as long as the wall is high – e.g. a 600mm high wall would use a 1200mm long post. Half the post is placed in a hole excavated in the soil and then backfilled with an appropriate strength material – i.e. 1 part cement to 4 parts damp sand, or similar. In the case of walls higher than 1200mm an additional backing panel is used to distribute the load at the base of the panel. Standard panels 300mm deep, with half panels 150mm in depth, are used in conjunction with each other to allow a retaining wall height from 300mm to 1500mm in increments of 150mm. Detailed engineering specifications for erection of a wall in sand or clay are available. Wonder Walls can also be constructed alongside a driveway, and specifications for a light vehicle surcharge wall are also available. Colours and Finishes Wonder Walls produces traditional grey and cream panels, with either a smooth or a textured limestone finish. Plus, a stunning charcoal colour with two new finishes, slate and block, has recently been developed. Any combination of these colours and finishes is now available. We are open from 8:30am to 5:00pm, Monday to Friday. Learn More About Wonder Walls Here