Stair System - Tolko Industries

Built for Every Step Ahead

The T-TEC™ Stair System brings together engineered stair components designed to work seamlessly as a complete solution. Combining T-TEC™ LSL Stair Stringers with T-STRAND® Pro OSB Stair Treads, the system delivers the consistency, dimensional stability, and long-term performance that builders can rely on. Engineered to minimize warping, twisting, and material waste, it helps simplify installation while creating stronger, more dependable stair systems. Backed by industry-leading warranties and supported by Tolko's trusted distribution network, it's a smarter way to build better stairs.

Tread

T-STRAND Pro OSB Stair Tread

Stringer

T-TEC LSL Stair Stringer

T-TEC-Floor-System

T-LINK™ is what makes the T-TEC™ Stair System work on your timeline. With T-TEC stocked at locations across North America, you get shorter lead times and the flexibility to ship mixed loads—all from a single, reliable source.

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Stair System Components

STAIR TREAD

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T-STRAND-Pro-OSB-Stair-Tread-800

Confidence in Every Step

Features and Benefits

  • Engineered for exceptional dimensional stability, helping stairs stay flat and resist cupping, splitting, and warping over time.
  • Precision-manufactured to consistent thicknesses and dimensions for improved fit, reduced waste, and efficient installation.
  • Bull-nosed profile provides a clean, professional finish and is designed to work with virtually any finished flooring material.
  • Meets APA Sturd-I-Floor® requirements and applicable building code standards for reliable structural performance.
  • Available with optional Zinc Borate (ZB) treatment for added protection against fungal decay, termites, and moisture-related damage.
  • Red edge seal helps protect panels from moisture exposure during transportation and on the jobsite.
  • Pairs seamlessly with T-TEC™ LSL Stair Stringers for a complete engineered stair system solution.
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Available with optional ZINC BORATE treatment for added protection.

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T-STRAND Pro OSB Stair Tread

Thickness Category: 1"
Widths: 11", 11-1/2"
Lengths: 12', 14'
Custom sizes available upon request
Profile: Bull-nose.
Square edge available upon request
Warranty: Transferable 50-year limited warranty

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STAIR STRINGER

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Built on Consistency

Features and Benefits

  • Engineered from Laminated Strand Lumber (LSL) for exceptional consistency and uniformity throughout the entire length of the product.
  • Superior resistance to warping and twisting helps improve stair system performance and reduce installation challenges.
  • Available in long lengths to accommodate extended stair runs and complex staircase designs.
  • Precision-manufactured to reduce the natural defects commonly found in solid-sawn lumber.
  • Blue bundle seal provides added protection from moisture exposure during transportation and jobsite storage.
  • Optional Zinc Borate (ZB) treatment helps protect against fungal decay and termite damage.
  • Packaged in tear-resistant woven-poly bags for added protection against moisture and contaminants.
  • Pairs seamlessly with T-STRAND® Pro OSB Stair Treads to create a complete engineered stair system solution.
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Available with optional ZINC BORATE treatment for added protection.

ZB-Treated-Logo-Horizontal-transparent

T-TEC LSL Stair Stringer

Thickness Category: 1-1/4"
Depths: 9-1/2", 11-7/8", 14"
Lengths: Up to 24'
E-Rating: 1.35E
Warranty: Transferable 50-year limited warranty

Resources

Technical Guides