An extensive research program on combustible wall materials has been carried out in Sweden. Several lining materials were tested in full scale room tests and 1/3 scale model room tests for two different scenarios, A and B. Scenario A refers to the case where walls and ceiling are covered by the lining material, scenario B where lining materials are mounted on walls only. A model is precented using material propertied derived from standardized bench-scale tests as input data. The model predicts the fire growth in the full or 1/3 scale tests, which includes predicting the rate of heat release, gas-temperatures, radiation to walls, wall surface temperatures and downward flame spred on the wall lining material. 29 referenser