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OSK is an industry leader for providing Australian constructions and individuals undertaking building projects with high quality, durable outdoor stair treads. Perfect for building staircases linking the garden to the veranda, the step treads available from OSK make the installation of outdoor staircases a breeze. Our team of carpentry experts are here to provide with sound advice in order to help you find the best product for your application, and this includes advice on style and sizing. Our range of outdoor step treads are designed and manufactured in Australia as part of the Made in Australia campaign. They come with all the necessary nuts and bolts to make installation a simple process. Save time and money for your business on not having to go to a carpenter to build your staircase – simply order a pre-assembled kit from OSK and away you go.

We are located in Melbourne and available to deliver our range of products throughout Australia. Therefore, if you are undertaking a building project in Sydney, Brisbane, Perth or beyond simply make an order on a product from OSK and we will have it delivered straight to your location.


Outdoor stair kits are available as DIY stair kits or pre-assembled to make the installation and building of a staircase simple. Instead of having to build your own individual stair tread you can have everything you need, as well as all the appendages for installation, sent right to the location of your building project. OSK provides construction companies and individuals undertaking personal building projects with stylish, high quality (pre-assembled) outdoor stair kits. Coming in a range of timbers that includes merbau and treated pine, you are sure to find a kit that is perfect for your project’s design aesthetic. The quality of stair sets provided by OSK is why we have become an Australian leader in the industry. Our team of carpentry experts can provide you with sound advice on a particular product to ensure you get the right kit for your project.

Located in Melbourne, we are able to provide delivery on our collection of stair kits throughout Australia. From Sydney to Perth, Adelaide to Brisbane and beyond, simply make an order from our range and we will have it delivered straight to your location.

Three Tread Merbau Stair kit



Outdoor Stair Kits Australia has long been an industry leader for providing businesses and individuals in Melbourne and Brisbane with quality internal and external timber stairs for their building projects. With a range of kits that come in one or multiple stair treads, you are sure to find the right set for your project. The stair treads provided by OSK are highly durable, stylish and versatile, and suited for external and internal use. Our tread kits come with all the necessary appendages you need for the easy installation of timber stairs. They are highly functional for builders and easy to install.

We provide shipping throughout Australia on our range of quality timber treads for internal/external stairs, including QLD. So, if you are in Sydney, Melbourne, Brisbane, Adelaide or beyond and undertaking a project that requires outdoor or indoor stairs, all you have to do is make an order on a set of timber treads stair treads from OSK.  We’ll have them delivered right to your project site.

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