What is the minimum staple length required when installing 3/8" sheathing?

When installing 3/8" sheathing, the minimum staple length required is 1-3/8". This length ensures adequate penetration into the framing members, providing a secure connection that is crucial for the structural integrity of the sheathing. The staples need to be long enough to anchor firmly into the underlying wood or framing, which typically measures around 1-1/2" to 2" in thickness, depending on the construction method.

Using a staple that is only 1" long would not provide sufficient holding power, while lengths like 7/8" would be even shorter, failing to reach into the framing adequately. Similarly, a staple length of 1-1/2" is often more than necessary, which could lead to complications such as damage to the wood or increased costs without added benefits. Therefore, 1-3/8" is the optimal choice for ensuring the sheathing is secured properly and safely.