Floor Joist Support Systems

Solid blocking should be used where floor joists overlap over beams.

Floor joist support systems.

While some floors are built directly on a concrete slab those built above open areas such as crawl spaces basements and lower floors almost always use a floor joist system to provide weight bearing support for flooring furniture people and everything else in your home. These reinforcing joists install quickly in crawl spaces with a complete installation taking about a day and provide a permanent solution. The joist support helps reinforce the floor so it can handle the weight load it needs to. In some cases additional joist supports will have to be installed before there can be extra heavy objects on the floor.

A joist support is the horizontal beam that supports the floor joists. It should be placed at eight foot intervals between any floor joists 2x10 or longer. Providing more support and rigidity than cross bracing solid blocking is a reasonable alternative but can be an obstacle for running plumbing pipes and electrical wire between floor joists. This engineered and patented design distributes the wall loads more evenly to the floor joists reducing side pressure which in turn prevents the wood joists from twisting or buckling like in other basement wall straightening systems that push off only one or two floor joists.

The best way to permanently solve sagging bouncy floor problems is to install smartjack posts beneath the beam that supports your crawl space joists.