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Lonza Wood Protection

Technical Specifications for Dricon® FS

Durable. Reliable. Tested.

Dricon® FS has an ICC-ES Evaluation Report 4584. For design professionals that are responsible for ensuring that both safety and structural elements have been addressed, reference ESR 4584.

  • Approved application to building codes from 2006 to 2018 for both
    the IBC and IRC codes.
  • ESR 4584 CBC & CRC Supplemental listed approvals:
    • California (Commercial & Residential)
    • Florida (Commercial & Residential)
  • Dricon® FS treated wood has been evaluated in accordance with AC66 requirements.
  • Dricon® FS treated wood qualifies as an Interior Type A (HT) fire retardant wood in accordance with the American Wood Protection Association (AWPA) Standard U1, Commodity Specification H, Use Category UCFA.
  • Dricon® FS fire retardant is a proven successful formulation based on the American Wood Protection Association P50 Standard for Fire Retardants.

Technical Information Sheet

Look for the stamp!

Dricon® FS is required to be stamped. It signifies a code compliant FRT product. Dricon® FS FRTW producers stamp each piece of wood to ensure that your lumber and plywood are treated properly and to the highest standard.



How to read
the stamp

Benefits of pressure treatment vs coating:

  • Pressure treatment penetrates into the cell structure of wood while surface treatments may remain on top of the wood.
  • Pressure treatment will not chip, peel, flake, or crack; surface treatments may have some or all of these issues.
  • Fire retardant treated wood provides fire protection to all 4 sides of the lumber and plywood. Coatings may only cover one side of the lumber or plywood.
  • Pressure treatment has been used in constructing FR trusses for many years. Coatings may impede truss plate connections.