Sistered Sistering Floor Joists
![Sisters For Bouncy Joists House Restoration Flooring Old House](https://i.pinimg.com/originals/1c/51/a2/1c51a2c94b51b6486275886e34a46f8c.jpg)
Sistering joists means beefing them up with additional material.
Sistered sistering floor joists. How to sister a floor joist. Framing lumber is the typical. So a 2 foot extension will be 4 feet sistered to the existing joist with appropriate fasteners 3 nails in a w pattern every 12. Since this is a repair of a faulty or damaged floor joist it is imperative to do this project correctly and there are a few big mistakes to avoid.
The section being inserted and sistered should be twice as long as the cantilever. This article provides step by step instructions and pictures on how to make structural repairs by sistering floor joists alongside weak joists. Doing so strengthens weak joists and can help straighten sagging joists.