Premium Outdoor Timber Stair Kits Australia
DIY Merbau & Treated Pine Stairs Delivered Australia-Wide
Outdoor Timber Stair Kits are premium pre-fabricated DIY outdoor stairs designed to deliver a professional finish while saving you time and money. Ideal for new builds, deck upgrades, patios, porches, and replacing existing outdoor stairs, our timber stair kits are built for Australian outdoor conditions using quality Merbau and Treated Pine.
Our DIY outdoor stair kits include all required components, including screws and drill bit, allowing for fast and easy installation while achieving a professional finish.
We manufacture both standard and custom outdoor stair kits to suit a wide range of residential and outdoor projects throughout Queensland, Victoria, New South Wales, and across Australia.
Speak with our experienced team to discuss custom outdoor stair solutions, timber options, stair sizing requirements, and the best stair kit for your project.
Phone: 03 9432 6782
Mobile: 0408 348 339


DIY STAIR KIT RANGE
OSK Australia manufactures premium outdoor timber stair kits in both standard and custom sizes using quality Treated Pine and Merbau hardwood, designed specifically for Australian outdoor conditions.
Our DIY outdoor stair kits are ideal for decks, patios, porches, garden access, and replacement outdoor stairs.
Standard tread widths are available in:
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900mm
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1200mm
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1500mm
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1800mm
Larger stair widths can also be manufactured with additional centre bracing for increased strength and stability.
Our outdoor stair stringers are fully trenched from the rear and pre-drilled for easier installation, helping homeowners, builders, landscapers, and renovators achieve a professional finish while saving time and money.
Standard stair rise is 160mm between each step, with screws and drill bit included in every stair kit.
Our outdoor stair stringers are fully trenched from the rear and pre-drilled for easier installation, helping homeowners, builders, landscapers, and renovators achieve a professional finish while saving time and money. Standard stair rise is 160mm between each step, with screws and drill bit included in every stair kit.
CUSTOM MADE DIY STAIR KIT
OSK Australia can customise timber stair kits to suit your exact project requirements and manufacture stairs to virtually any width or configuration. Our custom outdoor stair solutions are ideal for replacing existing porch stairs, patio stairs, decking stairs, or creating new outdoor access areas where standard stair sizes may not suit.
For a custom stair quote, we simply require:
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Landing to ground height
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Required stair tread width
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Preferred timber species
Custom stair kits are available in premium Merbau and quality Treated Pine, suitable for:
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Deck stair replacements
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Raised outdoor entertaining areas
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Patio and porch stairs
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Garden and landscape access
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Split-level backyards
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DIY outdoor renovation projects
Based in Melbourne, OSK Australia provides delivery of outdoor timber stair kits throughout Queensland, Victoria, New South Wales, Perth and across Australia.
Our range of pre-fabricated wooden stairs offers a durable, easy-to-install solution with a professional finish for residential and outdoor projects.

AVAILABLE TIMBER SPECIES
Our outdoor timber stair kits are available in:
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Merbau
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Treated Pine
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Blackbutt
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Jarrah
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Ironbark
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Spotted Gum
Each timber species offers its own unique appearance, durability, and suitability for different outdoor environments and decking applications.
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CONTACT DETAILS
ABN 79 619 134 593
Factory 3/ 11 Industrial Avenue , Thomastown VIC 3074, Australia
Phone: (03) 9432 6782
Mobile: 0407 041 410
