Can I Use Deck Pier Blocks Instead of Footings

Considering your project, you might be wondering, "Can I use deck pier blocks instead of footings?" While pier blocks can help support your deck structure, they don't entirely replace the need for proper footings. Let's delve into the details to understand why.

Deck footings distribute the weight of the structure across a larger area, preventing settling and ensuring stability. Pier blocks alone may not provide sufficient support, especially for larger decks or in areas with poor soil conditions. However, they can serve as an intermediary step in construction, adding some height and adjustability to your deck's structure. Let's explore this in more detail.

The Role of Pier Blocks in Deck Construction

Pier blocks play a significant role in deck construction by providing additional elevation and adjustability. They are typically placed on top of the footing, allowing you to level your deck even on uneven terrain. However, it's crucial to understand that pier blocks are not a replacement for footings.

Properly installed footings are necessary for a stable and long-lasting deck. They transfer the weight of the structure onto the soil, preventing settling and maintain the deck's level. Pier blocks can't achieve this on their own, but they can complement the footing system.

Benefits of Using Pier Blocks

Pier blocks are beneficial when constructing a deck, especially in these scenarios:

• Uneven Terrain: Pier blocks help level your deck when installing it on uneven ground.
• Elevation Adjustment: They allow you to adjust the height of your deck, ensuring it's safe from water damage and meets specific code requirements.
• Adjustability: Pier blocks can be moved up or down incrementally, making it easier to level your deck during construction.

When Not to Use Pier Blocks

While pier blocks have their advantages, there are situations where they shouldn't be used:

• Soft or Unstable Soil: In areas with poor soil conditions, pier blocks may not be sufficient to stabilize the deck. In such cases, you might need to use deeper footings or consider other solutions like concrete sonotubes or bell-bottom footings.
• Lack of Permitting Information: Always check local building codes and obtain necessary permits before starting your project. In some areas, only specific footing types are allowed, and pier blocks may not be approved.

Deck Footing Options

When planning your deck, consider these footing options to ensure stability and longevity:

1. Concrete Footings: These are the most common and recommended type of footing. They are typically made by excavating a hole, filling it with concrete, and allowing it to cure before installing the pier block.
2. Sonotube Footings: These are pre-formed, cardboard tubes filled with concrete. They are easy to install but may not be as durable as poured concrete footings in the long run.
3. Bell-bottom Footings: These are deeper footings with an expanded base, providing excellent stability in areas with poor soil conditions.

Each of these footing options has its advantages and limitations. The best choice depends on your specific project, local building codes, and soil conditions at your site.

Proper Deck Footing Installation

Regardless of the footing type you choose, follow these steps for proper installation:

• Excavation: Dig the hole to the required depth, ensuring it's at least 12 inches in diameter for typical deck footings.
• Concrete Pour: Fill the hole with concrete, ensuring it'sג12 inches deep and reaches the bottom of the pier block.
• Curing: Allow the concrete to cure for at least three days before installing the pier block or post.
• Install Pier Block: Place the pier block on top of the cured concrete, level it, and fasten it securely.

If you're unsure about whether you can use deck pier blocks instead of footings or need help with the installation process, consult a professional contractor or your local building department.

Now that you understand the role of pier blocks and footings in deck construction, you can make an informed decision for your project. While pier blocks aren't a replacement for footings, they can significantly enhance the construction process by providing additional elevation and adjustability. Happy building!