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Standard for
Fire Retardant
Impregnated
Wood and
Fire Retardant
Coatings for
Building
Materials
2000 Edition
NFPA, 1 Batterymarch Park, PO Box 9101, Quincy, MA 02269-9101
An International Codes and Standards Organization
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Appendix A
3.2.6 A fire retardant coating shall not be overcoated with any material unless both the fire retardant coating and the overcoat have been tested as a system and are found to meet the requirements of a fire retardant coating.
Explanatory Material
Appendix A is not a part of the requirements of this NFPA document but is included for informational purposes only. This appendix contains explanatory material, numbered to correspond with the applicable text paragraphs.
3.3 Tests.
A.1.1 Fire resistance ratings measured on an hourly basis are not covered in this standard. To establish such ratings, tests should be made in accordance with NFPA 251, Standard Methods of Tests of Fire Endurance of Building Construction and Materials.
3.3.1* Fire retardant coatings shall be tested by NFPA 255,
Standard Method of Test of Surface Burning Characteristics of Building Materials.
A.1.2.1 Authority Having Jurisdiction. The phrase “authority having jurisdiction” is used in NFPA documents in a broad manner, since jurisdictions and approval agencies vary, as do their responsibilities. Where public safety is primary,