Average Hourly Cost: The average hourly cost for a marble staircase sealing job by a marble contractor typically ranges from $60 to $90 per hour, depending on the complexity of the job.

Cost Breakdown: The cost of a marble staircase sealing job typically includes the cost of materials, such as sealant, grout, and other accessories, as well as the cost of labor. The cost of labor will depend on the type and quality of the accessory, the complexity of the job, and the location and service provider.

Factors Affecting Cost: Factors that can affect the cost of a marble staircase sealing job include the type and quality of the accessory, the complexity of the job, and the location and service provider. For example, higher quality accessories may cost more, as may more complex jobs. Additionally, the cost of labor may be higher in certain locations due to the cost of living.