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Endurance Thermally Modified Treads


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Rise & Run Details

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Product Description

An Endurance Series Tread is the perfect solution if you are looking to achieve a modern, thick tread look on your outdoor stairs or floating staircase. Endurance Treads come in 36”, 42”, and 48” widths and have been thermally modified to resist moisture, rot, mildew, insects, and the elements. The thermal modification process removes all the excess sugars and moisture from the wood, making it ideal for exterior use. The slats in the treads allow water to run through, preventing water damage and rot. Endurance Treads have no glue joints—they are held together with strong bolts which leave no points of weakness. Endurance Treads pair perfectly with Ipe Handrail and Special Application Posts for a complete tread and railing solution.

Endurance treads use thermally modified hardwood and are 3.5 inches thick with an 11.375″ (11 3/8″) depth and the widths come in 2″ variances from 36-48″.

As with all wood in an exterior application, it is highly recommended to apply an exterior-rated stain and/or sealant to lengthen the product’s lifespan.

StairSupplies is proud to introduce “Mocha”, our proprietary stain sealant for exterior applications. This semi-transparent stain provides a rich, dark pigment for our thermally treated wood products, providing an elegant finish with exceptional benefits. As both a stain and oil-based sealant, “Mocha” provides a broad spectrum of wood protection, including protection from:

  • UV damage
  • Aging
  • Weathering
  • Mildew
  • Fungus attack
  • Fiber rot
  • Fiber degradation
  • Color degradation

Because our stain is oil-based, it is able to soak into the wood effectively, creating an even and long lasting finish. As an added benefit, the stain protects the wood’s surface by repelling water.

As with all exterior wood products, we recommend yearly cleaning and re-application.

Key Features

  • Made for Exterior Use:  Many wood products are designed for interior use and then put outside as an afterthought. The Endurance Series’ thermally modified treads are specifically engineered for exterior performance.
  • Durability:  The thermal modification process removes excess moisture content and sugars from the lumber, meaning there is virtually nothing for insects to eat.
  • Beauty: Endurance Series products have an elegant appearance as soon as they arrive. They will also mature to develop a distinguished silvered grey over time, giving your exterior wood treads an ever-evolving beauty.


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