Notching is the process of cutting recesses into framing members to allow space for pipes, wiring, or connections.

Notching is a construction technique that involves cutting a recess or groove into a structural member, such as a stud, joist, or beam, to allow for the passage of plumbing, electrical wiring, or other building components. It helps systems fit within framing while keeping wall and floor assemblies aligned.

In residential and commercial construction, notching is commonly used in wood framing where pipes or ducts must pass through studs or joists. Because notching removes material, its size and location are strictly regulated by building codes to prevent weakening structural members. Limits vary depending on whether the member is load-bearing and where the notch is located.

Properly executed notching balances coordination between trades and structural integrity. Excessive or improperly placed notches can lead to deflection, cracking, or failure. When notching is not allowed or practical, alternative methods such as drilling holes or using furring and chases are typically required.

A notch cut just a few inches too deep can reduce a framing member’s strength by more than 50%, which is why code limits are so specific.