Fibre Reinforced Polymer (FRP) Composite is an alternative solution for strengthening of structure widely used in the world. Advantages given by this material is properly considered such as resistance against corrosion, no heavy additional equipment in application. It is economical to rehabilitate the structures using FRP sheets. This project deals with the study of retrofitting the RC beams using Glass fibre reinforced polymer (GFRP) and Polypropylene fibre reinforced polymer (PFRP). Seven beams of cross section 150 X 300mm and length of 1.5m were casted, one is control beam and remaining six beams were divided in to two groups, one group is strengthened at bottom and another group is strengthened at bottom and both sides of the beam (U shape). 1st one is monolithic wrapping of GFRP, 2nd is monolithic wrapping of PFRP and the 3rd is hybrid wrapping of both GFRP and PFRP. The effective use of GFRP and PFRP in strengthening of RC beams was studied by measuring the load carrying capacity, ductile behaviour and by observing failure modes. Tests results reveal that strengthened beams gives more load carrying capacity and also showed good ductile behaviour compared to control beam.