What Size Nails Do You Need for Shiplap?

If you’re looking to install shiplap in your home, you’ll need to make sure you have the right nails on hand. In this blog post, we’ll tell you everything you need to know about what size nails to use for shiplap.

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Shiplap is a popular type of siding used in many homes. It is made up of boards that have been cut to fit together snugly. Each board has a rabbet cut on one edge that allows it to fit over the board below it. This type of siding is very durable and easy to install.

One of the most important things to consider when installing shiplap is the size of the nails you will need. The size of the nails you use will depend on the thickness of the shiplap boards you are using. Most shiplap boards are between 1/2 inch and 3/4 inch thick. For these boards, you will need nails that are between 2 inches and 3 inches long.

If you are using thicker shiplap boards, you will need to use longer nails. For boards that are 1 inch thick, you will need nails that are 3 inches long. For boards that are 1-1/2 inches thick, you will need nails that are 4 inches long. And for boards that are 2 inches thick, you will need nails that were 5 inches long.

Using the wrong size nails can cause your shiplap installation to fail. Be sure to use the proper sized nails for your project to ensure a successful outcome.

What is Shiplap?

Shiplap is a type of horizontal siding with a rabbeted edge that allows the pieces to fit snugly together, creating a tight seal. It is often used in exterior applications but can also be used indoors to create a rustic look. Shiplap is available in a variety of woods, including cedar, pine, and fir.

What Size Nails Do You Need for Shiplap?

When it comes to shiplap, choosing the right size nail is important. While you might be tempted to go with a smaller nail to save money, using a nail that is too small can cause the shiplap to crack or break. Conversely, using a nail that is too large can damage the shiplap or make it difficult to install.

As a general rule, you should use 1-1/4 inch nails for shiplap that is 3/4 inch thick and 1-1/2 inch nails for shiplap that is 1 inch thick. If you are unsure of the thickness of your shiplap, it is always best to err on the side of using a larger nail.

Once you have chosen the right size nail, you also need to choose the right type of nail. For exterior applications, it is best to use galvanized or stainless steel nails. These nails are less likely to rust than other types of nails and will provide a stronger hold.


Based on the information above, you will need either 1-1/4 inch nails or 1-1/2 inch nails for your shiplap project. If you are using thinner shiplap, then you can get away with using 1-1/4 inch nails. However, if you are using thicker shiplap, then you will need to use 1-1/2 inch nails. Either way, make sure you get the right size nails for your project so that your shiplap comes out looking great!