The ceiling jacks are made of male and female parts and are used to restrain modular molds or roof structures. The ceiling jack is used for candle molding of roof or concrete beams. Ceiling jacks are the most economical means of executing light slabs and block joists. These jacks are available at 3m – 3.5m – 4m and 5 m height and are usually made of 5cm and 6cm diameter pipes and have holes to adjust height. Precise height adjustment is also possible with the help of screws and nuts mounted on the jack. These jackets are recommended at heights of 3m to 4.5m and it is recommended to use metal scaffolds at higher altitudes. Ceiling jacks (Roof Jacks) can also be manufactured according to the needs of the employer.