Roseburg Plywood underlayment is produced using thin layers of wood called veneers that are peeled from a western softwood tree log and glued together to form one multi-layered wood panel. This process creates a very strong plywood underlayment that is engineered to be a durable protective covering and can be applied directly over the floor joist framing of a building.

  • Subfloor underlayment
  • Areas affected by regional and seasonal weather conditions with high-moisture
  • Nails directly over floor joist in 19/32”or thicker panels
  • Framing applications where state and/ or local building codes require greater construction for extra strength
  • Additional insulation layer
  • Cross-laminated veneer construction provides excellent dimensional stability that resists warping
  • Resists splitting, puncturing and impact damage
  • Not prone to edge swelling
  • Tongue and groove on two edges or square edge available
  • Suitable for direct application of carpet and pad
  • RigidCoat reduces moisture absorption during the construction phase until the exterior walls and roof are installed
  • Coquille, Oregon
  • Dillard, Oregon
  • Riddle, Oregon

RigidFloor and RigidCoat Underlayment

Roseburg’s RigidFloor Underlayment delivers outstanding stiffness, strength and versatility. RigidCoat® Underlayment is produced with a tough water-repellent coating on the surface. These products are APA trademarked and compliant with PS1-19 Sturd-I-Floor.


  • Environmental Product Declaration – Type III product-specific EPD verified by UL Environment
  • Leadership in Energy and Environmental Design® LEED® v4 Credit Support
  • LEED® v4 Low Emitting Materials Credit Support
    • APA Trademarked and Compliant with PS 1 Sturd-I-Floor
    • Made with moisture-resistant adhesives
    • No surface treatments with added urea formaldehyde resins or coating
  • Sustainable Forestry Initiative® (SFI) program – certified available
  • Forest Stewardship Council® (FSC®) – certified available (FSC-C017580)
Product Resources
Sheathing and Underlayment Brochure
APA Guide - Industrial Panel Selection
APA Performance Panels Overview
SDS - Softwood Plywood
SDS - Wood Dust Label
SDS - Softwood Plywood
SDS - Wood Dust Label
Buy American Act Certification
Roseburg PEFC Chain of Custody Certificate
Roseburg SFI Chain of Custody Certificate
Roseburg Company Brochure
Order Samples

23/32″ thick, 5 Ply and touch sanded with a water resistant finish

RigidFloor Plywood Underlayment

23/32″ thick, 5 Ply and touch sanded with a water resistant finish


Product Educational

Roseburg offers a library of educational resources on a wide range of topics. Learn about what we believe in, how our products are made, and how we’re meeting or exceeding the certifications on each and every one of our products.

Project Inspiration

Roseburg products have been specified in thousands of commercial, residential, government and education projects. View our portfolio to get inspired.