The main risk of combustion expansion in normal building fires is the risk of surface combustion spread of the interior finish as well as combustibles in each room. Therefore, relevant laws and regulations have set the performance test methods for flame retardants and performance standards for building interior materials. In this study, the fire characteristics of foam blocks are analyzed through the flame propagation test of building materials (KS F 2844 (KS F : 2002 . From the result of the

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... st, it was observed that the foam block was ignited between 1 s and 5 s after the specimen was inserted into the test position and burned rapidly. The specimen was burned for at least 483 s and a maximum of 796 s to the end of the specimen (800   mm, width 155   ㎜). The maximum rate of heat release was 4.038 kW/m² at an average of 36 s after the start of the test. As observed from the result of the test, the foam block should be used not only in the multi-use facilities used by the unspecified majority but also in residences because of the sudden increase in the combustion in case of fire. The foam block should be included in the wallpaper of the electric appliances and also in the household goods safety management law to satisfy the safety standards of household goods.