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In this paper, an approach for modeling ceiling flame spread beneath a combustible board is developed. The presented model consists of a one-dimensional flame spread model coupled with a one-dimensional pyrolysis model. Firstly, the pyrolysis model is validated against the experimental data from the literature. In addition, the existing experimental data (the ceiling flame spread beneath medium density fibreboard (MDF)) are used for comparison to validate the numerical model. The results obtained from numerical simulations using the presented model are consistent with the experimental tests.