Class-A fire-protected wood products inhibiting ignition and spread of fire along class-A fire-protected wood surfaces and development of smoke from such fire

A Class-A fire-protected wood product comprising:

• a wood product having exterior wood surfaces with shallow exterior surfaces and being selected from the group consisting of finger-jointed wood products, dimensioned lumber products, cross-laminated timber (CLT) products, and engineered wood products (EWPs);
• and
• a transparent clean fire inhibiting chemical (CFIC) surface absorption layer formed on the exterior wood surfaces of said wood product during a surface absorption process, so as to produce a Class-A fire-protected wood product having Class-A fire-protected wood surfaces;
• wherein said transparent CFIC surface absorption layer includes tripotassium citrate absorbed into the shallow exterior surfaces of said wood product, and inhibiting (i) the ignition and spread of a fire outbreak along said Class-A fire-protected wood surfaces, and (ii) the development of smoke from such a fire outbreak, as chemical molecules in said transparent CFIC surface absorption layer interfere with free-radicals involved in the combustion phase of said fire outbreak.