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How to install floor joists

Updated February 21, 2017

A nice, solid floor is a must in any home and installing floor joists is something you can do yourself.

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  1. Examine the wood you choose for floor joists. These boards should be free of large knots or blemishes as that could affect the strength of the boards.

  2. Pick timber that is 5 cm (2 inches) deep by 15, 20 or 25 cm (6, 8 or 10 inches).

  3. Lay out your joists so that they will be spaced 40 cm (16 inches) on centre.

  4. Decide whether you wish to set the joists so that they run over a beam, butt together over the beam, or fit them into hangers attached to the sides of the beams.

  5. Fit the joists into the joists hangers if you choose that method of installing floor joists.

  6. Install hangers onto the beams carefully, making sure that they are not crooked. After you install the floor joists, check them with a level to make sure they're level.

  7. Put the floor joists in so that they curve upward evenly of the lumber you are using us crowned. Over time, the crown will disappear. Make sure that the floor joists butt into a bearing wall.

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About the Author

This article was created by a professional writer and edited by experienced copy editors, both qualified members of the Demand Media Studios community. All articles go through an editorial process that includes subject matter guidelines, plagiarism review, fact-checking, and other steps in an effort to provide reliable information.

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