Build Easier, Faster:
America's #1 Instant Deck Block Foundation

Ditch heavy concrete blocks. Forget waiting days for concrete to dry.
TuffBlock is engineered for strength, speed, and jobsite efficiency.
Trusted by Contractors & DIYers.

⭐️⭐️⭐️⭐️⭐️ 
400+ Reviews From Pros & Homeowners

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As seen on

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Free Shipping

1000+ decks built with TuffBlocks

Buit to Last  - 25 Year Guarentee

Rated 4.9/5 stars by DIYers & contractors

Built to ICC Standards

"tuffblocks are very strong and easy to use. They made the foundation and framing process move quick, and time is money! Highly Recommend"
- Wesley W.
 

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Why Builders & Pros Choose TuffBlock

Deck Block, Instant foundation system, BuildTuff, TuffBlock, Concrete Deck Block, Builder, Renovation, DIY, Do It Yourself, Build A Deck, Decking, Deck Footing, Instant Foundation System

26× lighter than concrete

Fit 100 blocks in a pickup, no forklift required.

Deck Block, Instant foundation system, BuildTuff, TuffBlock, Concrete Deck Block, Builder, Renovation, DIY, Do It Yourself, Build A Deck, Decking, Deck Footing, Instant Foundation System

Break-tested to 11,000 lbs

Proven strength contractors can trust.

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Labor-saving efficiency

Crews can frame and finish same day.

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ICC load-tested & code-ready

For floating deck builds across the USA.

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Works on almost any surface

Grass, soil, sand, pavers, or concrete.

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Pest-resistant design

Deters termites, ants, and silverfish for longer-lasting builds.

Deck Block, Instant foundation system, BuildTuff, TuffBlock, Concrete Deck Block, Builder, Renovation, DIY, Do It Yourself, Build A Deck, Decking, Deck Footing, Instant Foundation System

Fits 2x4, 2x6, 2x8 joists & 4x4 posts

Precision-engineered to standard lumber.

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UV-stabilised & climate-proof

Won’t crack, corrode, or absorb water in any environment.

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The Instant Foundation System for Decks, Sheds, Walkways & More! 

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TUFFBLOCK (PACK)

Regular price Sale price $264.95 Free Shipping. Made in America.
/
Tax included.

-3157 in stock

Size

Building soon? Order now before November 1st price increase!

TuffBlock is the world’s fastest growing foundation method for a range of home improvement projects, including raised or low-profile decks, walkways, cubby houses, and much more. TuffBlock removes the need for digging holes and pouring concrete, making it the easiest and most versatile foundation system on the market.

- Accepts 3.5" x 3.5" or 4" x 4" Posts
- Accepts 1½" - 2" Joists & Bearers
- Each TuffBlock is load rated for 1,700lbs

          Built for the Jobsite 

          Forget hauling heavy blocks or waiting days for concrete to cure.
          With TuffBlock, you can:

          Cut install times in half — crews can frame the same day.
          Keep overhead low — reduce transport costs and back-breaking labor.
          Work anywhere — on uneven soil, turf, or pavers with a little leveling.
          Deliver lasting builds — backed by a rock-solid 25-year warranty.

          • Cut install times in half — crews can frame the same day.
          • Keep overhead low — reduce transport costs and back-breaking labor.
          • Work anywhere — on uneven soil, turf, or pavers with a little leveling.
          • Deliver lasting builds — backed by a rock-solid 25-year warranty.

          Available online or in store at

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          Hundreds of Happy DIYers & Contractors (and Counting!)

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          "Tuffblocks were Strong, easy to use, and helped save me tons of time and energy building the frame of our deck! Website videos and tutorials made this an easy process for my first deck build! Thanks very much!"
          - Ray F.
           

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          Built To last

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          We stand behind every TuffBlock with a rock-solid 25-Year Warranty. 

          Ready to Build Easy with TuffBlock?

          Deck Length (feet)Deck Width (feet)Deck Area Calculator (sq feet)Estimated TuffBlocks
          8129624
          201020042
          201224042
          301030060
          201632056
          351035072

          The number of TuffBlocks required is based on 16 inch centers when calculated.
          Geometric calculations only (imperial). Check local building regulations for required material, sizes and spacing.

          Concrete Deck Blocks vs TuffBlock 

          TuffBlock’s engineered design makes it a clear winner for quick installs, portability, and sustainability — all without sacrificing strength. For floating decks or ground-level builds where digging isn’t feasible (or wanted), TuffBlock is the smart choice.

          Concrete Deck Piers (deck blocks) vs concrete footings comparison
          FeatureConcrete BlockTuffBlock
          Weight~35 lbs 1.5lbs
          Break Strength~2,55 lbs11,000 lbs
          Installation Heavy, time-consuming Lightweight, fast
          Durability Can crack or degrade UV-stable, corrosion-proof
          TransportMultiple trips / heavy lifting100 blocks in a pickup
          MaterialRecycled high-strength polymerRecycled high-strength polymer
          Post Slot VersatilityLimited slot options Fits 3.5" x 3.5", 4" x 4" posts, and 1½–2" joists
          Moisture WickingPorous material absorbs water, which can cause freeze–thaw damage, pitting, and corrosion of any embedded steel.Non-porous — will not absorb water or suffer from freeze–thaw damage. Ventilated, raised design prevents moisture build-up
          Warranty25 yearsNone standard



          "Very happy with the product! Extremely easy to work with! Especially worth it for the ease-of-use / lightweight and portability. Very easy for assembling an on-grade deck."
          -  Michael G.

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          How to Build Easy With TuffBlocks

          1

          Drop

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          Place your TuffBlocks directly onto firm, level ground — grass, dirt, gravel, or even concrete. No need to dig holes or pour footings. Just space them where your posts or joists will go.

          2

          Level

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          Use a spirit level to make minor ground adjustments if needed. TuffBlocks work best on flat, stable surfaces — and minimal prep is all it takes. Tip: Use packers such as crusher dust underneath for extra stability and longevity.

          3

          Build

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          Drop in your 3.5" or 4" posts or 1½" - 2" Joists & Bearers — From here, just start building your deck, shed base, stairs, or even tiny home floor.

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          ✔️ No curing time. No mess. Build immediately.

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          Frequently Asked Questions

          Deck Block, Instant foundation system, BuildTuff, TuffBlock, Concrete Deck Block, Concrete Deck Footing, Builder, Renovation, DIY, Do It Yourself, Build A Deck, Decking, Deck Footing, Instant Foundation System

          USA Wide Shipping

          We deliver across the USA with Free Shipping.

          Our Guarantee

          We're so confident in our products and service, we offer a 25 year warranty on your TuffBlocks

          Support

          We're building a smarter building community. Contact Us anytime, we would love to help!

          Deck Block, Instant foundation system, BuildTuff, TuffBlock, Concrete Deck Block, Concrete Deck Footing, Builder, Renovation, DIY, Do It Yourself, Build A Deck, Decking, Deck Footing, Instant Foundation System