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TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing
TuffBlock - The Original Composite Deck Footing

TuffBlock - The Original Composite Deck Footing

Regular price Sale price $287.50 Free Shipping. Made in America.
/
Tax included.

-3143 in stock

Size
ICC Certified • 25-Year Warranty

ICC Certified

1000+ Real Builds

0 Warranty Claims

25 year warranty guarantee

4.9/5 Rating

Trusted by Contractors & DIYers

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.

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

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

Supports 1,700 lbs per block & break-tested to 11,000 lbs

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Fits real lumber variation. 3.5-4″ for posts & 1.4-1.6″ or 1.6-1.85″ joists. 

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Build decks as low as 6"

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Made in USA

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Won’t crack or absorb water & UV-stabilised to withstand harsh conditions 

How it Works

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1) Place TuffBlocks

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2) Insert Joists/Posts

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3) Build Frame

Contractor & DIY Review

Site Built Sheds (Charlotte, NC) 

 Jerry from Site Built Sheds uses TuffBlocks on every job because they’re faster, lighter, and more reliable than concrete.

Justin & Jess DIY (Nashville, Tennessee)

“As a first-time DIYer, TuffBlocks were a game-changer. They made the whole deck project simple and straightforward.”

Contractor & DIY Review

Site Built Sheds (Charlotte, NC) 

 Jerry from Site Built Sheds uses TuffBlocks on every job because they’re faster, lighter, and more reliable than concrete.

Justin & Jess DIY (Nashville, Tennessee)

“As a first-time DIYer, TuffBlocks were a game-changer. They made the whole deck project simple and straightforward.”

Real Projects Built on TuffBlocks

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Watch full video here 

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Watch full video here

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Watch full video here

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Build Smarter with TuffBlocks

Hundreds of Happy DIYers & Contractors

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How does TuffBlock compare?

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TuffBlock

✔ 26× lighter & faster install
✔ UV-stable, corrosion-proof
✔ 25 year warranty
✔ Low deck height of 6"
✔ Does not absorb water

Concrete Block 

✘ Heavy
✘ Can crack or degrade
✘ No warranty
✘ Minimum deck height of 12–18"
✘ Absorbs water

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.

Frequently Asked Questions

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.

Shop Now
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Built To last

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

Prefer to shop in store? Visit

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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