Fire resistant materials are made by causing the condensation to occur in situ when a normally flammable material and the reactants are mixed and the mixture is heated at {HEAD ~ 250° F.} to 480° F. Wooden articles such as {TAIL ~ molded hardboard roofing shingles} of this invention do not lose their fire resistance after being soaked with rain repeatedly 
Fire resistant materials are made by causing the condensation to occur in situ when a normally flammable material and the reactants are mixed and the mixture is heated at { HEAD ~ 250 ° F. } to 480 ° F. Wooden articles such as { TAIL ~ molded hardboard roofing shingles } of this invention do not lose their fire resistance after being soaked with rain repeatedly
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