The specific properties of particleboard samples used in this study were as follows: 280x210x1.8 cm dimensions, 0.68 g/cm 3 specific gravity. Produced boards were coated with lacquered paint, melamine impregnated papers, wood veneers and continue press laminates. The effects of surface coating material type, melamine paper weight, wood veneer type and thickness, and continue press laminate thickness on the thermal conductivity and combustion properties of particleboard were investigated. Results showed that surface coating material type was found to affect these properties. Melamine paper weight and wood veneer thickness did not affect the thermal conductivity and combustion properties of particleboard samples. Wood veneer type and continue press laminate thickness affected these properties. Surface coating materials increased the thermal conductivity. Coated particleboard was more combustible than uncoated particleboard. Additional work is needed to improve the fire retardancy properties of these materials. A standard including the thermal conductivity values of coated and uncoated particleboard should be prepared. Yuzey Kaplama Malzemelerinin Yongalevhalar›n Is› ‹letkenlii ve Yanma Ozellikleri Uzerine Etkileri Ozet: Bu cal›flmada 280x210x1.8 cm boyutlar›nda, 0.68 g/cm 3 younlukta yongalevhalar uretilmifltir. Uretilen yongalevhalar lake boya, melamin emdirilmifl ka¤›tlar, ahflap kaplama levhalar› ve rulo laminatlar› ile kaplanm›flt›r. Yuzey kaplama malzemesi ceflidi, melamin ka¤›t gramaj›, ahflap kaplama ceflit ve kal›nl›¤› ile rulo laminat›kal›nl›¤›n›n yongalevhalarda ›s› iletkenlii ve yanma ozellikleri uzerine etkileri araflt›r›lm›flt›r. Yap›lan cal›flmalar sonucu; ›s› iletkenlii ve yanma ozellikleri uzerinde yuzey kaplama malzemesi ve ahflap kaplama ceflidi ile rulo laminat› kal›nl›¤›n›n etkili, melamin ka¤›t gramaj› ve ahflap kaplama kal›nl›¤›n›n ise etkisiz olduu belirlenmifltir. Yuzey kaplama malzemeleri ›s› iletkenliini artt›rm›flt›r. Kaplanm›fl yongalevhalar›n kaplanmam›fl levhalara gore daha yan›c› ozellik tafl›d›¤› belirlenmifltir. Bu malzemelerin yanma ozelliklerini iyilefltirici ek bir cal›flmaya ihtiyac vard›r. Yongalevhalar›n sahip olmas› gereken ›s› iletkenlii konusunda bir standart haz›rlanmal›d›r.
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