Blackbutt Sawtooth Stair 30mm String (pair)

30mm Sawtooth Timber Stair String (pair)

Please note photo of sawtooth string is not the correct timber species see second photo for actual timber species sample.

Elevate your staircase with our precision-machined 30mm thick solid timber sawtooth string, expertly crafted for strength, accuracy, and a clean traditional look in any home. See our stair configurator to order custom strings. These strings are sold as a pair and delivered as a left-hand and right-hand string together.

Dimensions & Profile:

• Thickness: 30mm
• Going: 240mm or 250mm
• Rise options: 170mm, 175mm, 180mm, 185mm or 190mm
• Precision-cut sawtooth profile designed to suit our 30mm Treads and 18mm Risers

This string is made specifically for closed riser sawtooth stairs, where the treads and risers sit on the cut steps of the string. It works equally well as a wall string or outer string and pairs perfectly with our 30mm Standard Timber Stair Treads and 18mm Timber Stair Risers for a solid, reliable fit.

Perfect for both new builds and renovations, the 30mm construction delivers solid performance in family homes while giving a neat, continuous side profile that suits contemporary, coastal, or traditional designs.

Key Benefits:

• Easy assembly with accurately cut sawtooth steps for a straightforward tread and riser fit
• Smooth, sanded surfaces ready for your choice of stain, oil, or clear finish

All products are delivered raw, pre-finished sanded to 100 grit.

Blackbutt, a premium Australian native hardwood (Eucalyptus pilularis), boasts a clean, uniform appearance with pale golden-brown to straw tones and a straight, even grain—occasionally accented by subtle gum veins for added rustic charm. Exceptionally durable and fire-resistant, with high density and strength, Blackbutt excels in high-traffic areas and is ideal for stair components that demand longevity and low maintenance. Its neutral palette complements contemporary and coastal  interiors, while its natural toughness makes it suitable for treads, stringers, risers, and handrails that stand up to everyday family use.