The traditional process for replacing a shallow foundation like post and pad with a deep foundation such as screw piles includes either a lift of the structure at least 6′ high or the temporary removal and then replacement of the structure on the new foundation.
A lift to 6′ of a typical cottage will range from $20,000 to $30,000 and will vary based on size and landscape.
Once a cottage is lifted or moved off the original foundation, a deep foundation can be installed. Because the cottage was built with X amount of original supports (likely posts) the same number of piles is typically required.
With a typical deep foundation ranging from $6,000 to $20,000 for a cottage, very quickly the overall cost of a foundation stabilization project can hit $30,000 or more.
Always looking for a better way to serve customers, Postech Screw Piles Manitoba and NW Ontario proposed an underpinning method involving I-beams and that eliminates the need for an extensive building lift or move as well as reduces the number of piles required.
This strategy does involve additional costs such as I-beams as well as labour and could include custom brackets but generally you will come in well under traditional budgets.
Below is a slideshow of a project completed in 2015 where the customer’s cottage was lifted approximately 2 feet from original height and where the foundation was replaced with heavy duty screw piles installed from the perimeter of the building and two through the floor of the cottage. We have included before, during and after pictures.
If you have a cottage where you’re tired of Band-Aid solutions or where the foundation outright scares you, visit www.screwpiling.ca and complete or free quote request form or give Dale Plett, Director of Customer Consultation a call directly at 204.793.0653.