Mannai offers affordable waterproofing solutions in Sultanate of Oman. It has been playing an active role in the waterproofing and coating industry and has been serving local communities. We specialized in residential, commercial, industrial waterproofing and painting works. Mannai waterproofing provides a wide range of services to the construction industry such as Water proofing systems, thermal insulation, concrete repair, crack injection / concrete injection, expansion joint treatment.