Products | Industrial | Particleboard

UltraBlend Stairtread

Overview Specifications Sustainability

Roseburg UltraBlend Stairtread features a highly refined, smooth surface and tight, uniform core with a bullnose edge. UltraBlend particleboard is a premium quality, mat-formed, multi-layer panel that is made of precision refined wood particles bonded with thermosetting resins. UltraBlend Stairtreads are sanded and cut-to-size at the facility before shipping. 

Roseburg UltraBlend Stairtreads are excellent for constructing interior stairs that will be covered with flooring. It is produced from Roseburg’s UltraBlend particleboard and is available in various widths and lengths.

When And Where You Need It

Roseburg UltraBlend Stairtreads are available throughout North America at some of the largest and most respected distributors. We encourage you to contact one today to get more information on Roseburg's UltraBlend products.

Key Advantages

  • Made from 100% recycled or recovered fiber
  • Can be specified FSC certified
  • Meets the Composite Panel Association ECC specification
  • High quality, smooth surface
  • Tight, machinable edges
  • Excellent dimensional stability
  • LEED Credits: UltraBlend panels may contribute to achieving credit in LEED v2009 and LEED v4



Standard Size Widths: 10-1/2’’, 11-1/2’’

Lengths: 42", 48’’, 73’’, 97’’, 121’’, 145’’

Thickness: 1-1/8’’

Panel Grades:

  • From Dillard, OR - UltraBlend Plus
  • From Missoula, MT - UltraBlend Plus

Physical Properties: Refer to green box above, Resources - Technical Data Sheets

Dimensional Tolerances:

  • Width and Length: The width and length tolerances shall not exceed +/- 1/16”
  • Squareness: The squareness of a panel shall not exceed +/- 1/8”.
  • Thickness Tolerances: Variance from panel averages +/- 0.005”
  • Panel: Averages from nominal +/- 0.005”

Adhesive: Low emitting thermosetting resins

Sanding: Sanded

Edge: Bull-nose

Application: UltraBlend Stairtreads are intended for interior use only

Flame Spread Rating: Class C or Class III

Sustainable AttributeSupporting DocumentationQualifying StatementApplicable Green Building
Standard or Credit

Certified Wood

SCS -CoC Certificate

When specified FSC® certified and purchased from a Chain of Custody certified supplier

LEED v3 (2009) - MRc7 - Certified Wood

LEED v4 - Building product disclosure and optimization - Sourcing of raw materials

Recycled Content

Recycled Content Letter - Particleboard

90% pre-consumer recycled content

LEED v3 (2009) - MRc4 Recycled Content

LEED v4 - Building product disclosure and optimization - Sourcing of raw materials

Low-emitting Material

CA Executive Order N-17-155 ULEF Exempt. (Dillard, OR)

CA Executive Order 17-149 ULEF Exempt (Taylorsville, MS)

CA Executive Order 18-139 ULEF Exempt (Missoula, MT)

SkyBlend is CARB ULEF Exempt. It is manufactured at three facilities (each ULEF Exemption is linked to the left) and meets the criteria for Low-Emitting Materials for both LEED 2009 and LEED v4.

LEED v3 (2009) - EQc4.4

LEED v4 - Low emitting materials

Regional Materials

Request custom mileage calculation from Roseburg

Qualifies when project is within 500 miles (LEED v3) or 100 miles (LEED v4) of Roseburg region identified on map

LEED v3 (2009) - MRc5 Regional Materials

LEED v4 - Building product disclosure and optimization

Environmental Product Declaration (EPD)

Roseburg SkyBlend & UltraBlend Particleboard EPD

Valued as 1 product due to the Product Specific, Type III EPD.

LEED v4 - Building product disclosure and optimization - environmental product declaration


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