4″ Thick Stair Treads


Rise & Run Details

Please provide us with a valid stair angle to add this product to your cart.

Please Note - If your staircase contains a variable rise and run from step to step, you will need to work with a Project Manager after the sale to engineer the system.

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Ships in approx: 10 Business Days

Product Description

Beautiful from every side, 4” Thick Stair Treads provide a bold appearance. Strength exudes from these robust treads, constructed in over 12 wood species and completely sanded and finished on all 6 sides. Craftsmanship shines through the details, including 1/8” radius smoothing on every edge. Make your statement with these stunning thick treads, perfectly paired with  Viewrail Flight floating stairs and Viewrail cable railing.

Key Features

  • 4” Thick
  • Solid, Stain-Grade Wood
  • 1/8” Roundover
  • 360° Beauty


Our 4” Thick Stair Treads add a modern, strong appearance to both Traditional and Floating Stair Systems. To mount thick treads on traditional stairways, be sure to read about Returned Edges on the Specifications tab above. Floating Staircases may require specific notches for mounting thick treads, depending on the system you use. We are happy to accommodate requests for notches, grooves, or other special indentations to help the mounting process. Give us a call for more details.


Bold and creative, our Cascade Thick Stair Treads boast attractive and unique grain patterns on each side.

Note, wood products may have varying amounts of staves due to the varying thicknesses of lumber that comes in each bunk and the width of the product.

Product Specifications


  • Thickness: 4”
  • Depth: 11 ¼”
  • Width: 36”, 42”, 48”, 54”, 60”, 66”, or 72”

We are happy to accommodate your custom dimensions. Please use the Custom Thick Stair Tread Designer to order treads that will fit your particular staircase. Give us a call if you have any questions!

Returned Edges

Traditionally styled stairways sometimes require mitered edges, but they are not commonly used on floating stair systems. Returned Edges cover end grain, while also adding decorative flair. There are three configurations of returned edges available: Left, Right, and Double. NOTE: If both sides of the stair treads fit against a wall, you do not need returned edges.

To determine if a Left or Right Returned edge is required, stand at the bottom of the stairway and look up. If the right side is exposed, then you need a Right Returned Edge. If the left side is exposed, then you need a Left Returned Edge.

Double Return thick stair treads are used when both edges of the tread are exposed on a traditional stairway. This style of tread requires a special measurement called the “throat cut”, which you will need to provide when you place your order. To find the throat cut of your Double Return tread, measure the length between the inside of the Left and Right Returned Edges. In the end, the final width of a Double Return Thick Tread equals the Throat Cut measurement plus 2 ½” (1 ¼” per Returned End).

With the exception of Double Returns, all Left and Right Returned Treads are sent to you with up to an extra 1” of material on the end with no return. This additional allowance may be trimmed on-site to match the exact curve of your unique wall, ensuring a snug fit. If you are ordering treads with No Returns, all 6 sides of the thick tread will be cut, stained, and finished to your specifications.

Clear Finish & Stain Information

StairSupplies™ offers several premium stain and finish options for our products, depending on the product’s use. For Thick Stair Treads, we offer both clear finishes and stains. Select a clear finish if you want to draw out the natural beauty and colors of the wood. If you prefer deeper, richer tones, our custom-mixed stains are the ideal choice for your Thick Stair Treads.

All tread materials and products that are used underfoot are finished with a Conversion Varnish. Strong and resilient, this varnish is standard in the hardwood flooring industry. Our team of experts applies this specialty product onto each stair tread using a spray applicator for even, flawless coverage to protect your treads against heavy wear and tear.

Wood Grain & Color Variation

At StairSupplies™ we believe that natural wood colors and visual textures add character to our products. With that in mind, we strive to match the grain and color of all of our wood products as closely as possible. However, due to the natural variation of wood products, there may be instances in which a perfect grain and color match is not possible. By ordering from StairSupplies™, you acknowledge that you are receiving a uniquely crafted product and there may be some variation in the grain and color of your wood products.

Interior Use Only

This product may contain glue joints and is designed for interior use only.

Completed Projects

This product has been used in the following "Completed Projects"

    Product Q&A

    Hailey Arends
    5 years 5 months ago

    I’m interested in purchasing the paint grade butcher block style of this product. Can you tell me what wood type(s) are used in the creation of this item?

    5 years 5 months ago

    Hi Hailey,

    Paint Grade products are made of Poplar or Soft Maple. Even though we offer Paint Grade treads, we don’t recommend them because the wood is soft and is easily dented. Treads take a beating over time, and so the paint grade wood would likely have many dents due to the heavy use that treads endure. Please let us know if there’s anything else we can help you with.

    Terry Ulanch
    4 years 3 months ago

    how far can a 4″ tread span between stringers?

    4 years 3 months ago

    Terry, thanks for the question.

    We can manufacture our 4″ treads up to 72″ wide standard, and have made custom orders longer than that. You will need to consult an architect or structural engineer to determine the maximum safe distance in your specific project.


    StairSupplies Customer Support

    Shan Jenkins
    3 years 11 months ago

    Are the actual finish dimensions 4″ x 11 1/4′ or are these nominal dimensions?

    3 years 11 months ago

    Thanks for the question Shan.

    4″ x 11 1/4″ are the actual finish dimensions.


    StairSupplies Customer Support

    Jason P Hunt
    3 years 3 months ago

    Can these be used on outdoor stairs and how slippery if wet

    3 years 3 months ago

    Hi Jason,

    We do not recommend using these outdoors as the wood we use is suited better for interior use. We have specifically made a tread that deters insects and uses no glue processes for exterior use, check out our Endurance Treads. If you would like some more information, please call in to discuss options.

    StairSupplies Customer Support

    3 years 2 months ago

    Can you supply treads that are 14″ wide? In maple, hard maple, ash, or alder?

    3 years 1 month ago

    Hi Brent,

    Definitely! I would definitely point to our Custom Tread Builder where you can supply a wide range of dimensions! Let us know if you have any other questions.

    StairSupplies Customer Support