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2-1/2-in Black Plastic Deck support

Ratings & Reviews for TuffBlock 2-1/2-in Black Plastic Deck support

4.7
390
Review
 4.7 out of 5
391 Reviews


96% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these deck supports for their ease of installation, lightweight design, and superior durability. Most highlight how simple setup is—simply level the ground and place blocks with no digging, tools, or expertise required. Many note they can carry stacks of 10 with ease, making solo projects manageable. Reviewers consistently confirm the blocks securely support 4x4 posts and beams for decks, sheds, and ground-level structures. Made from recycled plastic, they resist cracking and shifting under load. A few mention cost concerns, but most consider them an excellent investment for convenience and reliability.

Customer review summary generated by AI, including incentivized reviews.
391 Customer Reviews

Platform Leveler

Would Recommend

Saved me hours when leveling the platform for my storage shed!

June 5, 2026
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Nah

Would Not Recommend

Expensive when need multiple

May 29, 2026
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Great support

Would Recommend

These are thick and make supporting a shed floor easy. Definitely recommend.

May 29, 2026
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Easy to work with!

Would Recommend

Lightweight and a lot easier to maneuver than cement piers.

May 29, 2026
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Quality

Would Recommend

Light weight

May 28, 2026
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Just what you need for a floating deck project.

Much better for building a floating deck than the concrete counterpart. Easy to install and the low profile means less digging than the heavier concrete blocks

May 27, 2026
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Great product

Great product. I used in conjunction with sunken posts. Allows for flexibility and ease to make changes if needed.

May 25, 2026
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Lighter than using pavers

What I like about the Tuff bBock product it is light weight. The label was big to read and understand. It was easy for a one person job to move around. Anyone over age of 60 can manage the product.

May 25, 2026
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Simple support

Fast easy set up.

May 25, 2026
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Remember to use it the way it was intended.

Would Recommend

Works great!

May 25, 2026
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Will buy it again

Would Recommend
May 24, 2026
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Worst experience ever in the history

Would Not Recommend

Lowes is the absolute worst store for construction pros

May 23, 2026
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Great support for floating deck builds

Would Recommend

These deck support blocks worked really well for my floating deck project. Lightweight but sturdy, easy to position, and helped speed up the installation process. Worked great with 2x8 framing and provided a solid, level foundation. Definitely a good alternative to pouring concrete footers for smaller decks.

May 23, 2026
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Easy to use

Works great for dragon fruit 4x4 base

May 22, 2026
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Faster and lighter than digging.

Would Recommend

This was my first time using a no-dig foundation for a free-standing deck. I've done many concrete foundations for decks, sheds, and small houses. This was easier on my long-retired, creaky bones and complaining muscles. The deck is strong and stable. I don't see any problems in the future. I strongly recommend these Tuff-blocks.

May 19, 2026
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