Should I use 2×6 or 2×8 for shed floor?

When it comes to building a shed, one of the most important decisions you will have to make is what size lumber to use for the floor. The two most common options are 2×6 and 2×8 boards. While both can be used for shed floors, there are some key differences to consider before making your choice. In this article, we will discuss the pros and cons of using 2×6 and 2×8 boards for a shed floor to help you determine which option is best for your project.

Strength and Durability

One of the main factors to consider when choosing between 2×6 and 2×8 boards for a shed floor is their strength and durability. 2×8 boards are thicker and wider than 2×6 boards, which means they can support more weight and are less likely to sag or warp over time. This makes them a better choice for larger sheds or sheds that will be used to store heavy equipment or machinery.

On the other hand, 2×6 boards are still strong enough to support the weight of most sheds and their contents. They are also less expensive than 2×8 boards, making them a more budget-friendly option. However, if you plan on storing heavy items in your shed or want to ensure maximum durability, 2×8 boards may be the better choice.

Span Length

Another important factor to consider is the span length of the boards. Span length refers to the distance between the supports that the boards will be resting on. The longer the span length, the more likely the boards are to sag or bend under weight. This is where 2×8 boards have an advantage over 2×6 boards. Due to their larger size, 2×8 boards can span longer distances without needing additional support, making them a better choice for larger sheds or sheds with longer floor plans.

However, if your shed is on the smaller side and will not be storing heavy items, 2×6 boards may be sufficient. It is important to note that even with 2×8 boards, it is recommended to have additional support in the form of joists or beams every 16 inches to prevent sagging.


As mentioned earlier, 2×6 boards are generally less expensive than 2×8 boards. This is because 2×8 boards require more raw materials and are more labor-intensive to produce. If you are on a tight budget, using 2×6 boards for your shed floor may be the more practical option. However, keep in mind that using 2×8 boards may save you money in the long run as they are less likely to need repairs or replacements due to their increased strength and durability.

Building Codes

Before deciding on the size of lumber to use for your shed floor, it is important to check with your local building codes. Some areas may have specific requirements for the size and spacing of boards used for shed floors. It is always best to follow these codes to ensure your shed is safe and up to code.

Other Factors to Consider

Aside from the factors mentioned above, there are a few other things to consider when choosing between 2×6 and 2×8 boards for your shed floor. For example, if you plan on insulating your shed, 2×8 boards may be a better choice as they provide more space for insulation. Additionally, if you are planning on installing a ramp for your shed, 2×8 boards may be easier to work with as they provide a wider surface for attaching the ramp.

In conclusion, the decision to use 2×6 or 2×8 boards for your shed floor ultimately depends on your specific needs and budget. 2×8 boards offer increased strength and durability, making them a better choice for larger sheds or sheds with heavy contents. However, 2×6 boards are still a viable option for smaller sheds and can save you money. It is important to carefully consider all factors and consult with local building codes before making your final decision.

Should I use 2×6 or 2×8 for shed floor?

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