Our Commitment to Compliance

Satu Bumi is committed to the application of industry standards in all aspects of our business where it is realistically possible, including compliance with the "Specification for the Manufacture, Curing & Testing of Glassfibre Reinforced Concrete (GRC) Products" produced by the International Glassfibre Reinforced Concrete Association (GRCA) in the UK.

In their most basic sense, precast concrete products are made by filling moulds with a wet concrete mixture and allowing them to cure. However, with the evolution of GRC concrete technology, although concrete planters are still manufactured with the use of form moulds, they can now be made much harder, stronger, more waterproof and more durable. All of which are essential elements in meeting the architectural, engineering and construction standards required for concrete planter boxes, troughs and pots used in commercial landscaping projects.

We start with Product Engineering

In our product engineering phrase our focusing is on Aesthetic appeal and structural Integrity. GRC Products are design to be attractive but also well balanced. The Structural Integrity of our products is also of upmost importance. Our planters, pots and troughs are made for a purpose, housing soil and water and often act as versatile seating in communal areas. Paying attention to the full spectrum of the products purpose requirements is part of our engineering phrase and all our products are engineered to be fit for purpose.

Making the Master for a GRC Planter

A master, sometimes called a plug, is an exact physical representation of a product's theoretical design as depicted in a CAD drawing. Masters are typically made from a number of different substances such as wood, miln, clay, or even concrete and form the framework upon which a precasting mould is made. Masters become damaged and are normally discarded once they have been used to make a mould.

Satu Bumi utilises CNC router technology in the making of masters because it provides a high level of precision. However, Satu Bumi also relies heavily on the artistic competence and experience of its master making team to get the highest quality masters possible.

Satu Bumi is committed to the application of industry standards and compliance with the manufacture, curing and testing of glassfibre reinforced concrete (GRC).
Satu Bumi-GRC-Planter-Mould

Making the Mould for a GRC Planter

Satu Bumi generally uses resin moulds which are made by applying many layers of gel coat, various gauges of fibreglass matting and high quality  resin to the surface of a master to create a reverse image. However, depending on the type of mould required, Satu Bumi sometimes uses rubber or wood for moulds. In addition, a variety of optional textures can be imprinted into the walls of the moulds as part of the mould making process.

The quality of a mould can have a significant effect on the ultimate quality of a GRC casting. Therefore, Satu Bumi utilises high quality raw materials to ensure its precasting moulds are of a world class standard. 

Making GRC Planters

The actual GRC products are made by spraying or pouring a scientifically calibrated mixture of concrete and glass fibre slurry into moulds, left to cure and harden for a set time period before being demoulded and then left to continue the curing process. It is during the concrete slurry mixing stage that integrated concrete colour or waterproofing add-mixes are included.

The high quality of Satu Bumi's GRC products is dependent on properly calibrated and maintained GRC production equipment, properly trained staff, high quality raw materials and industry standard production, monitoring and quality control practices.

Satu Bumi-GRC-Planter-Production
Satu Bumi-GRC-Planter-Finishing

Finishing GRC Planters

The first step in the finishing process is to clean up any loose or sharp edges of the cast products subsequent to demoulding. After that, there are a significant number of optional stains and coatings that can be applied to the completed GRC casting including external sealants, internal sealants, graffiti protection, oxide colouring stains with either aged metal or stone appearances and high quality specialty paints.

Satu Bumi achieves excellent finishing results because we have invested significantly in sourcing the best available finishing products and implementing industry standards based finishing processes.

Packing GRC Planters

Appropriate packaging is an essential element in the preparation of GRC products for transportation to ensure they are not damaged between the factory and their ultimate destination. This is particularly important if the products need to be shipped over significant distances with the potential of several loadings and unloadings along the journey.   

Satu Bumi offers both wood and cardboard packaging options depending on the shape and size of the products or the specific requirements of the customer.

Satu Bumi-GRC-Planter-Packaging
Satu Bumi-GRC-Planter-Containerisation

Transporting GRC Planters

Transportation is typically an expensive element in sourcing GRC products in quantity. Therefore, where possible, the Satu Bumi Distributor Range has been specifically designed for optimum palletization and shipping containerisation to facilitate the maximum utilization of shipping container space.

In addition, because Satu Bumi uses shipping container efficiency for transporting our CityScape Range directly into Australia's major ports, we are generally able to transport orders from our factory to almost anywhere in Australia less expensively than the typical cost of interstate road transport.