Multi-family Construction with ProWood FR (Fire Retardant) Pressure-Treated Wood

ProWood FR Fire Retardant logo

Relentless standards for the ultimate in fire protection.

If you specify fire-retardant dimensional lumber, plywood and wall assemblies for multifamily and commercial structures or for custom homes, look to ProWood FR. It’s superior, fire-retardant wood that pros and specifiers trust. View the architectural specifications.

ProWood FR pressure-treated wood is code compliant and UL approved — its fire-retardant chemical is infused deep into the wood cells, not just the surface. This changes the chemistry of the wood, so when it heats up, it gives off water and carbon dioxide, which helps stop the spread of flames and fire growth.

We're confident ProWood FR will perform, and that's why it's backed with a 50-year limited warranty.



Product Identification:

ProWood FR lumber and plywood products are clearly identified. Each piece is stamped with the critical information required by building code authorities, including the UL FR-S designation and the ICC-ES report ESR-4373. Additionally, all ProWood FR products are color tinted for easy identification on the jobsite.

ICC-ES Logo     Classified UL Logo     GreenGuard Logo


Download our ProWood FR Spec Guide for more information.


UL V343 Fire Retardant Wall Assembly:

ProWood FR Diagram

Now UL Listed (UL 263)
  1. Drywall
  2. ProWood FR Lumber
  3. Insulation
  4. ProWood FR Plywood
  5. House Wrap (optional)
  6. Exterior Facings (optional)

2 Hour Wall Assembly

ProWood FR 2 Hour Wall Assembly

Max. Tested Load - 100% of design load

Fire Ratings

  • 2-hour rated wall assembly from wall interior
  • 1-hour rated wall assembly from wall exterior
  • 2-hour fire retardant wall assembly now UL listed

Multi-family Construction using ProWood FR Fire Retardant Wood


Fire Retardant Applications Include:

  • Roof trusses
  • Rafters
  • Plywood roof sheathing
  • Floor and roof joists
  • Mezzanines
  • Steps and stairways
  • Studs
  • Interior partitions (non-load)
  • Floor sheathing
  • Subflooring
  • Partition walls
  • Beams and purlins
  • Blocking and furring
  • Platforms and stages
  • Wall sheathing and paneling
  • Millwork and trim
  • Backing for electrical panels
  • 1 & 2 hour wall assemblies

View ProWood FR Literature >>

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