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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
424
Review
 4.7 out of 5
424 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.
424 Customer Reviews

Not impressed

Would Not Recommend

Not what I expected. No way to secure 4 x 4 or 2 x 6 etc to the tough block.

January 12, 2026
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Perfect

This item working perfectly! Perfect to keep the The bottom of my fence post dryer, which will equal less time to rot and fits perfectly with a sauna tube. I used for the securing of the fence post.

December 5, 2025
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good stuff

Would Recommend

ease of desisign

November 16, 2025
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It's a post base

Would Recommend

Guess it okay

November 11, 2025
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Out performs concrete in every way

My pros on this product, lightweight,and stronger than concrete, stackable and lower profile.

November 9, 2025
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Tuff It Is !

Would Recommend

Can be uses with 2x4 pressure treated lumber or steel for foundations. Fits fine on 12x123 concrete and up! Git 24 for my foundation project.

November 6, 2025
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Very light

Easy to use. Only time can tell

October 25, 2025
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Sturdy and Affordable

Easy to use! Made the leveling of my shed base very easy. A few dollars more than the cinder block versions without having to carry them.

October 21, 2025
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Works great with paver base under and then on top

Would Recommend

Made leveling the deck super easy

October 14, 2025
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Great producet

Would Recommend

This is a great product for ground level building.

October 8, 2025
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Foundation Game Changer

Would Recommend

These foundation supports were everything & more that I researched about them. Highly recommend them for Building Sheds, Decks etc.

September 28, 2025
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Too expensive for what it does

Would Not Recommend

Ok

September 15, 2025
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