How to Properly Notch Structural Beams

Posted by in Home Improvement Tips, on March 31, 2018

Ask This Old House plumbing and heating expert Richard Trethewey and general contractor Tom Silva explain how to notch structural beams to host Kevin O’Connor. Click here to SUBSCRIBE to the official This Old House YouTube channel: Time: 5 minutes
Skill Level: Beginner/Intermediate
Steps: 1. Avoid “No Man’s Land," the top and bottom of the joist when drilling a hole.
2. Drill holes no larger than one-third the width of the joist.
3. For cutting a notch in the top or bottom of a joist, avoid the center one-third of the joist.
4. The notch may not be bigger than one-sixth the height of the joist. Resources:
Joists are available at your local lumberyard. Follow This Old House and Ask This Old House: Facebook:

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