How to Use Deck Blocks for a Simple and Sturdy Deck?

Looking to build a deck without the hassle of deep holes or pouring cement?

Concrete deck blocks offer an easy and reliable solution. They provide a solid foundation for your deck with less mess and time spent.

Here, we will show you how to use deck blocks, step by step, to build a strong and lasting base for your deck, with what you should do and what you should not do.

Curious how these little blocks can make a big difference? Let’s take a closer look!

What are Concrete Deck Blocks?

Concrete deck blocks are rectangular, heavy-duty blocks made from a mixture of cement, sand, gravel, and water.

Designed for stability, they create a solid foundation for your deck, ensuring strength and durability.

Since they are made of concrete, these blocks can withstand the elements and offer long-lasting support.

Their simple design allows you to set them directly on the ground, avoiding the need for complex digging or pouring concrete footings.

These blocks make building your deck easy while providing reliable support.

Why Deck Blocks are a Popular Choice for DIYers?

Deck blocks are a popular choice for DIYers because they make life so much easier.

Here’s why deck blocks are a go-to for DIYers:

Simple Setup: No need for complex tools or professional help—just place the blocks and set your posts.
Affordable: They’re a cost-effective option for building a deck without breaking the bank.
Durable: Made to last, so you don’t have to worry about them wearing out over time.
Quick and Easy: Skip the mess and the long wait for cement to cure. Deck blocks save you time and hassle.
Perfect for Beginners: If you’re just getting started with DIY projects, these blocks make the process much easier to manage.

How to Properly Use Deck Blocks?

Using the deck blocks sounds easy, and it is if you know the right steps!

Here’s a simple guide to help you get those deck blocks in the perfect spot, so your deck can be the sturdy outdoor retreat you’re dreaming of.

Step 1: Choose the Right Spot

Make sure the ground is level and stable. If your yard is a bit uneven, you might want to do some light leveling first. Your blocks should sit on a solid, flat surface to avoid any wobbles down the line.

Use a shovel or rake to smooth out any bumps or low spots. This will ensure your deck stays level and secure for the long run

Step 2: Mark the Layout

Use stakes and string to mark where you want your deck to go. This will give you a clear visual and help keep everything in line. Think of it like drawing a map, just with a lot more concrete!

Make sure the string is taut and straight for precise measurements. Double-check the corners to ensure the layout is square before moving on to the next step.

Step 3: Place the Blocks

Carefully place each block in the spots marked during your layout.

Follow the guide strings to keep them lined up. Make sure the gaps between blocks are even so your deck has balanced support. If a block looks out of place, adjust it until all sides match correctly.

A consistent arrangement will help keep the structure stable.

Step 4: Set Your Posts

Insert the posts into the block openings so they fit securely.

Use a level to check they’re standing straight before moving to the next one. Adjust as needed, making sure each post is aligned with its neighbors.

Properly placed posts help distribute weight evenly and keep the deck safe over time.

Step 5: Double-Check the Placement

Before securing anything, take a close look at the entire layout from different angles.

Ensure all blocks and posts are sitting level and the spacing matches your plan. Make any necessary adjustments now while it is easy to move the blocks or posts.

This step will help prevent issues later and keep your deck stable and safe over time.

Common Mistakes to Avoid When Using Deck Blocks

Sometimes even the easiest projects have their hiccups. To make sure your deck is solid and lasts, here are some common mistakes to avoid when using deck blocks.

Skipping the Leveling: Not leveling the ground can lead to uneven support. Even a slight slope can cause problems later.
Improper Block Spacing: Placing blocks too close or too far apart can put too much stress on certain areas, causing instability.
Placing on Unstable Ground: Avoid placing blocks on soft or uneven soil. It can lead to shifting over time, compromising the deck’s stability.
Misaligned Posts: Rushing through post alignment can result in a crooked deck. Always double-check with a level to ensure posts are straight.
Ignoring Local Codes: Failing to check local building regulations can lead to violations or an unsafe structure. Always verify that your foundation complies.
Using the Wrong Size Blocks: Using blocks that are too small or light can cause your deck to feel unstable. Ensure you’re choosing the right size for your project.

By knowing these mistakes beforehand and planning properly, your deck blocks will provide a solid and reliable foundation that you can be proud of.

Deck Blocks or Traditional Concrete Footings: Which Is Better?

When building a deck, choosing the right foundation is crucial for long-term stability and success.

Feature	Precast Deck Blocks	Poured Concrete Footings
Installation	Place directly on the ground	Dig holes, pour concrete
Time Required	Quick setup, no waiting	Several days with a curing time
Cost	Lower upfront expense	Higher material and labor costs
Durability	Good for most projects	Superior long-term strength
Tools Needed	Minimal equipment required	Digging tools, mixing equipment
Permanence	Semi-permanent, moveable	Permanent installation
Best For	Small to medium decks	Large decks, harsh climates