[en] Fibres Reinforced Concrete has received much interest in the concrete research world over the last few decades. Assimilating fibres into concrete structures has many advantages. Previous study discovered that the addition synthetic or natural fibres to concrete enhanced the material’s thermal properties as well as its strength to some extent. Fibres, on the other hand, have an influence on the thermo-mechanical properties of concrete. The aim of this research is to see whether applying Polypropylene and Kenaf fibres to cement mortars of various compositions has any potential (0.1 %, 0.2 %, and 0.3%). Eight separate mixes were tested in this report. The addition of PP and Kenaf fibres reduced the workability of the mortar samples as measured by flow ability, compressive strength, tensile strength, and thermal conductivity. In contrast to other ratios, cement mortar containing 0.1% PP and Kenaf fibres have highest compressive strength, while samples containing 0.3% recorded highest tensile strength which are 6.2 MPa and 7.2 MPa respectively. When higher percentages of both fibres are used in mortar samples, the thermal conductivity decreases. It can be inferred that adding a certain percentage of fibre to a composite can boost both mechanical and thermal properties. (paper)