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Answers to some of the most common questions our clients had before raising their roof.

Expert Answers on Commercial Roof Raising

From structural safety to fully burdened cost calculations, get the facts on how we successfully increase clear height in commercial real estate.

FAQs About Lifting a Roof

Answers to your questions about raising the existing roof of a building.

The cost to lift a roof varies. It is dependent on the specifications of each project. In most cases, a budgetary number can be calculated based on the number of square feet to be lifted. Specifications such as the height and the number of existing columns are additional factors.

The entire cost of a roof lifting project is also dependent on the end use and any necessary upgrades to the existing building. New lighting, more efficient sprinkler systems and other improvements are often part of the overall cost of raising a roof.

If you would like information on costs and a budgetary scope of work please email us. Or call 1-866-331-6150. You can also request a quote online.

Roofs of any size can be raised. ROOFLIFTERS has lifted roofs ranging from less than 1000 SF to over 600,000 SF. In most cases the area lifted is determined by the structure itself, often sectioned off by expansion joints. Typically the largest practical size is around 150,000 SF in a single lift.

Most commercial and industrial roofs do not exceed clear heights of 45 feet. ROOFLIFTERS has lifted structures as high as 72 feet, so lifting is not limited to that height.

Absolutely not. The ROOFLIFTERS process is specifically designed to address this concern. Lifting can be more than double or even triple the existing height since we do not rely on column sleeves.

Roof weight is not a factor for our company. The ROOFLIFTERS system is designed so that each post has a lifting capacity of 25 tons. In cases where the weight exceeds 25 tons, the CribPosts are simply clustered to accommodate the weight. In some cases, interior columns can require two, three, or even four CribPosts which would provide up to 100 tons of lifting capacity.

Clients often ask, “does the roofing material need to be replaced?” No.

In fact, no work related to actual lifting ever takes place on the surface of the roof itself. Our process is designed so that very little of the existing roofing, decking, and framing requires any repair. While repairs will be necessary around the perimeter of the roof where it was attached to walls or other parts of the building, the existing roofing material largely remains intact.

There is no minimum amount of square feet that you lift. However, for economic efficiency, it becomes impractical in most cases to lift a roof that is less than 2,000 SF. However, this is not to say that our company has not lifted smaller roofs. In some instances, a small section of a larger roof must have a higher clear height in order to accommodate new equipment or processes. In these instances, raising a portion of the existing roof is much faster, cleaner, and less costly than demolishing a small section and rebuilding it higher.

Through the use of a synchronization system, designed and patented by ROOFLIFTERS, the actual movement of each lifting point is monitored as opposed to the amount of hydraulic oil that is being pumped. This provides an extremely accurate measurement of each point and allows large areas of a roof to be lifted at one time.

How Much does it cost to lift a roof of an existing building?