How Monolithic Slabs Work
Monolithic means “all-in-one pour.” In addition to being poured in one step, monolithic foundations are only four inches thick on average and the footings only reach about 12 inches from the base to the top of the floor, meaning they only need to be dug in 6 inches below the surface. In cold climates like those of Montana, you can also combine internal heating with an extra layer of insulation around the edge of the foundation to keep the frost at bay and away from the floor, keeping it safe from freezing and thawing.
When to Choose Monolithic Slabs
The fact that they are poured in one go means Monolithic slabs are significantly faster than any other type of foundation construction and also provide a solid foundation. Monolithic slabs are great option for smaller exterior structures such as sheds, gazebos, carports and even small barns. Despite the simplicity, a monolithic slab foundation can last around many years if properly constructed. However, this style of foundation have crucial limitations that may make it inappropriate for your construction, so be certain to look into local building codes for what is deemed legal and proper.