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.Great on slab pier.
Would RecommendI was redoing a old deck that was on top of a slab. I liked the fact that they were low profile and light weight.
Verified Purchaser
Price is too high but they work ok
It is dumb that they charge 12 bucks for a plastic block. It is clearly price gouging as the product is very cheap to make. They should be less expensive than concrete blocks, not more. They work but are priced way too high for what they are.
An easier way to support 4x4 post
Would RecommendVery impressed with the product a lot easier than other methods of supporting a long ramp and a deck at dock height for access to access a building.
Verified Purchaser
Easy to work with and better than concrete
Would RecommendThe price was a little high. But for the convenience of being lightweight compared to a concrete block is worth the difference
Verified Purchaser
Great alternative...
Simple, solid and easy to use... Great alternative to digging and cement...
Verified Purchaser
Perfect to projects
Easy to install
Verified Purchaser
These cross channel holders worked great!
Would RecommendI bought these to hold up wood at an angle, for a 18 ft pool water heater.
Verified Purchaser
A little expensive, however, it’s better than dig.
Would RecommendStrong and very easy to work with.
Verified Purchaser
Stability and strength were beyond our expectation
Would RecommendBuilt an 8’ x 8’ deck on an uneven surface on a hill using 2” x 6” treated cedar. This was our first time using Tuff Blocks (TB) and they worked as well as concrete blocks, e.g., much lighter to carry and handle, easier to level, and provided the stability we were expecting. Extremely happy with the outcome and would definitely use TB again. Highly recommended.
Verified Purchaser
Low profile deck support!
Would RecommendThis is a low profile alternative to concrete deck blocks, use it to place a deck or structure close to the ground. Works well on slopes where one corner or edge of the deck is too low for a concrete deck block. The TuffBlock appears to live up to its name, I've used several of these over the years and they are all in good condition.
Verified Purchaser
Sturdy and should last, but pricey for plastic
Would RecommendSturdy and do the job as designed, but pricey for a piece of plastic
Verified Purchaser
Easy setup
Would RecommendFits 2x4 all the way up to 4x4
Verified Purchaser