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Joists are horizontal structural members used to support floors and ceilings in residential and light commercial construction. They help distribute loads across framing systems to create stable and level surfaces. Available in different sizes and engineered formats, joists support a range of building applications. Explore options at Lowe’s to find products suited for routine structural framing needs.

Benefits of Joists

  • Structural Load Distribution: They’re designed to help support weight across framed floor and ceiling systems.
  • Reliable Floor Framing: Floor joists provide consistent support for subflooring and finished flooring materials.
  • Versatile Construction Use: They’re suitable for new builds, additions and renovation projects.
  • Stable Surface Support: Floor joists deliver long-lasting structural support, ensuring level floors and safe working surfaces inside your build.
  • Everyday Building Utility: They’re commonly used in framing systems throughout residential construction.


Key Features of Joists

  • Engineered Options: I-joists are designed to provide strength while supporting longer spans.
  • Application Flexibility: Floors joists are available to meet common framing requirements in residential projects.
  • Ceiling Support Designs: Ceilings joists help create stable overhead framing systems.
  • Dimensional Consistency: They’re manufactured to maintain uniform sizing and alignment during installation.
  • Load-Capacity Range: They’re offered in specifications suited for different span and weight requirements.


How to Choose Joists

  • Match Structural Requirements: Select joists based on span length and anticipated load.
  • Consider Installation Area: Choose joist types intended for floors, ceilings or decks.
  • Review Material Type: Engineered and traditional lumber options may suit different project goals.
  • Check Code Compliance: Ensure joist selection aligns with local building guidelines.

Joists support everyday structural framing by helping create stable floors and ceilings in residential construction. They’re useful for distributing weight evenly and maintaining consistent structural integrity across framed spaces. Having the right joist type and size available can help support reliable building performance. Shop joists and joist hangers at Lowe’s today.