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 250° F. to 480° F. Wooden articles such as {HEAD ~ molded hardboard roofing shingles} of {TAIL ~ this invention} do not lose their fire resistance after being soaked with rain repeatedly 
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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 250 ° F. to 480 ° F. Wooden articles such as { HEAD ~ molded hardboard roofing shingles } of { TAIL ~ this invention } do not lose their fire resistance after being soaked with rain repeatedly
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