International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 6 9 2017 09 10 Finishing studies on polyurathene (PU) and shellac coats on teak and deodar surfaces 22 25 EN Samir Derouiche 1 Department of Cellular and Molecular Biology, Faculty of natural sciences and life, ElOued University, El-Oued 39000, El-Oued, Algeria Zeghibe Khaoula 2 Department of Cellular and Molecular Biology, Faculty of natural sciences and life, ElOued University, El-Oued 39000, El-Oued, Algeria Gharbi Safa 3 Department of Cellular and Molecular Biology, Faculty of natural sciences and life, ElOued University, El-Oued 39000, El-Oued, Algeria Khelef Yahia 4 Department of Cellular and Molecular Biology, Faculty of natural sciences and life, ElOued University, El-Oued 39000, El-Oued, Algeria Priyanka Sharma 1 Faculty of Agricultural Sciences, SGT University, Gurgaon-122505, Delhi-NCR, India Nilima Bhardwaj 2 Department of Botany, Government College, Kota-324001, Rajasthan, India Ritu Singh Rajput 1 Department of Botany, JECRC University, Ramchandrapura, Sitapura Industrial Area, Jaipur-303905, Rajasthan, India Sonali Pandey 2 Department of Botany, JECRC University, Ramchandrapura, Sitapura Industrial Area, Jaipur-303905, Rajasthan, India Seema Bhadauria 3 Department of Microbiology, JECRC University, Ramchandrapura, Sitapura Industrial Area, Jaipur-303905, Rajasthan, India Anil Mundotiya 1 Forest Products Division, Forest Research Institute, Dehradun-248006, India Kishan Kumar V.S. 2 Forest Products Division, Forest Research Institute, Dehradun-248006, India Ranjeeta Dash 3 Forest Products Division, Forest Research Institute, Dehradun-248006, India Shiv Mundotiya 4 Forest Products Division, Forest Research Institute, Dehradun-248006, India > Short Communication 2017 4 13 2017 09 10 The present study stresses that the softwood and the hardwood have different properties and require the distinctive finishing application. In this study, two finishes Polyurethane (PU) and Shellac have been used on two species, i.e., softwood Deodar and hardwood Teak. The study is based on the coat thickness of the finish. The samples were analysed after applying the finishing material on daily basis. The observations revealed no significant increase in coat thickness up to first three coats, after wards the thickness increases gradually. However, in polyurethane application, this phenomenon is not observed. In polyurethane, the thickness increase is observed to be gradual from the first coat. Copyright@ International Science Community Association