Spline

A spline is a thin strip of wood mounted between two joists used with the intention of reinforcing the joists and adding extra support.

Using a Spline

Inserting a spline into a structure is as simple as adding an extra strip of timber between two joists. A spline will function to effectively add reinforcement and support to the joists within the structure. This can be applied when building things such as floors and ceilings. The benefit of using a spline in such construction is it will help to add stiffness to the entire structure and reduce bowing. It will also help to prevent warping to the joist structure.

When to use a Spline

A spline should be used anytime a joist structure is being built in an area where additional weight will be put on it. A good example of a location where a spline will be necessary is a flooring structure, especially in regards to a second story floor. This will help to reinforce the entire floor structure and aid in preventing bowing which could lead to cracking of the ceiling below.