Aluminium Treads                         Timber Treads

To complement our Steel Stair Stringers a range of Aluminium and Timber Treads,
complete with End Caps and all the fixings needed for installation, are available.
Click the images above for relevant information, sizes and pricing.

Quality Steel Stair Stringers: Our Engineer Designed Steel Stair Stringers, up to 17 Steps (18 Risers), are manufactured to exacting standards, in our Brisbane Factory, from first grade Australian Made Steel. Standard Stringers are fabricated at an Angle of 35 degrees to a Rise of 175mm and a Going of 250mm.

Non-Standard Custom Stair Stringers, those with different Rise or Goings, are all able to be manufactured. Contact Us to receive a quotation on your specific requirements.

Scott Metals Standard Stringers, are Designed and Engineered for both Internal or External uses in Residential and Commercial applications. In Residential applications the Stringers can clear span up to 17 steps (18 Risers) when using Aluminium Step Treads or Timber Step Treads. This means NO support post under the Stringers is required, allowing more versatility in the installation and giving an aesthetically pleasing appearance.

The Standard Stringers are constructed to suit minimum 50mm thick step treads in order to achieve a maximum gap of 125mm between the treads. We supply Aluminium Step Treads, and Timber Step Treads, all are compliant within the Australian Building industry.

What's Included: Stair Stringers, generally sold as a pair, but also available individually, come ready to install, complete with top hanger brackets, riser brackets and a choice of footing configurations: Inground, OnConcrete/Bolt Down or Landing to Landing. Pictures of all Stringer types are shown below.

Duragal-Plus: At Scott Metals we use Australian Made Steel 100 x 50 x 3.0mm Duragal-Plus RHS in the manufacture of our Stringers up to 15 Steps. This product is a pre-galvanised, inside and out, steel box section. The total coating thickness of Duragal-Plus pre-galvanised sections is twice that of any other product currently available. On Duragal-Plus Stringers all the welds and stair riser brackets are shop prime coated with zinc rich Cold Galvanised Paint after fabrication. For added protection, after purchase, a quality top coating is recommended.

Hot Dip Galvanised: Should you require extra protection from the elements, then we recommend using Hot Dip Galvanised Stair Stringers. Hot Dip Galvanising is a process where the stringer, after manufacture, is completely immersed in molten zinc. This thick metallic zinc coating, completely covers the stringer surface, inside and out, providing a superior corrosion resistant finish.

16 and 17 Step Stair Stringers are fabricated from 100 x 50 x 5.0mm RHS and are then Hot Dipped Galvanised to exacting Australian Standards. 16 step and 17 step stringers are only stocked in the Hot Dipped Galvanised finish. Because of the heavy duty RHS used in the manufacture of 16 and 17 step stringers, a central support post is NOT required for residential applications, when installed using Timber or Aluminium Treads.

For information, dimensions and drawings on Riser Brackets, Hanger Plates, Bolt-On Stair Kits, How Many Steps you require, How Far Out will the Stringer base be from the landing and Delivery rates, click the links.

Design: Our Stair Stringers, used Internally or Externally, are designed for residential applications with a clear span up to 17 steps (18 Risers) when installed with Aluminium Step Treads or Timber Step Treads to a maximum of 1200mm tread width per pair. For wider tread spans a third central stringer or more must be used. If an alternative rise and going to our standard 175mm Rise and 250 Going, refer to and check the Engineers Details and Installation Table as a support posts maybe required. Otherwise, for a small increase in cost, the Stringers can be manufactured using a thicker RHS if a clear span is required.

Supporting posts or the fabrication using thicker RHS may also be required when the Stair Stringers are used in commercial applications. For these installations please check the Engineers Details and Installation Table.

After installation, if the Stair Stringers tend to vibrate, flex or spring, normally the installation of a balustrade handrail fixes this problem, if not, then we recommend the fitting of a centrally located support post under each Stringer Rail.

Engineer Approved: Scott Metals Stair Stringers are Engineer Approved and Certified to comply with all relevant Australian Standard Building Codes. Form 15 available after purchase if required. Engineers Details and Installation Table.

Bushfire Resistant: Steel Stair Stringers when used in conjunction with Aluminium Step Treads are ideal for use in Bushfire prone areas. Reaction to 'Fire Tests and Burning Behavior' of Aluminium Step Treads was conducted by AWTA Product Testing. The tests resulted in findings of "Does Not Ignite". Making Aluminium Step Treads suitable for use in Bushfire prone areas. The installation of Steel Stair Stringers and Aluminium Step Treads significantly improves a homes resistance to Bushfire attack.

Note: To comply with the current Building Codes, the Stringer “rise” MUST be consistent, including the first step and last step up to the landing. The ground level may need to be built up or excavated to achieve this.

Delivery: Steel Stair Stringers can be delivered Door to Door in the Greater Brisbane, Gold Coast and Sunshine Coast areas or Collect from our Brisbane Depot. Contact Us for Delivery Prices and lead times for all your Steel Stair Stringer Supplies in Brisbane.

For Non-Standard Custom Stair Stringers, Contact Us to receive a quotation on your specific requirements. Steel Stair Stringers fabricated in our Brisbane factory from Quality Australian Made Products at competitive prices.

Manufactured to your requirements - ON TIME, EVERY TIME.

We supply Aluminium Treads and Timber Treads click links for prices and info.
Scott Metals Steel Stair Stringers - "A Step Ahead of the Rest"

The Riser Brackets used are pre-drilled, with 2 slotted holes 11 x 18mm @ 150mm centres, to match all popular Aluminium and Concrete Step Treads on the market. We recommend and supply Aluminium Stair Treads as they are non-slip and low in maintenance. We also stock and supply 250 x 55mm hardwood Timber Step Treads.

The Top Hanger Brackets used are pre-drilled, with 2 @ 14mm holes @ 50mm centres. They are fabricated from 50 x 6mm Flat Bar. When welded to the Stringer RHS they protrude 180mm above the RHS. The Top Hanger Brackets, in raw black steel, can also be bought separately, ($6.60 ea Inc GST), for those wanting to manufacture their own stringers.

Alternative Side Fix Top Hanger Brackets are also available, see image below. ($6.60 ea Inc GST).

A Bolt-On Stair Kit ($22.00 ea Inc GST) is used with OnConcrete/Bolt Down Stair Stringers. The Bolt-On Stair Kit consists of 2 Galvanised Angle Brackets and Tek Screws for fixing to the bottom of the Stringer Legs. The Angle Brackets, 55 x 80 and 90mm long, are pre-drilled with 3 @ 6mm Holes for Tek Screws and 2 @ 14mm Holes for Anchor Bolts.
Engineer Approved & Certified: Engineers Details & Installation Table

Kit includes 2 Galvanised Brackets & 6 Tek Screws

How do you calculate the steps you need on your stringer?

Simply measure the height from the top of the landing to the ground directly below, divide this length by 175 rounding to the nearest whole number and deduct 1 for the top landing.

Example: Height = 2415 ÷ 175 = 13.8 (14) less 1 = 13 Steps (14 Risers)

See the Pricing Table above for further assistance.

How far out will the stringer be?

Simply multiply the number of steps by 250mm (this being the going of each step) and deduct 175. The result equals the distance from the landing to the centre of the hole required for concreting the stringers into the ground.

(No. of Steps x 250) - 175mm = Centre of Hole