Build Easier, Faster:
Australia'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

Proudly Made in Australia

"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

Proven strength 

Supports 770 KG per block & break-tested to 5,000 KG

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Labour-saving efficiency

Crews can frame and finish same day.

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ICC load-1 & code-ready

For floating deck builds across Australia.

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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.

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Precision-engineered to standard timber

Accepts 90mm x 90mm or 100mm x 100mm Posts & builds as low as 150mm

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UV-stabilised & climate-proof

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

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 overheads 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.

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TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
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TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
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TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)
TuffBlock (12-pack)

TuffBlock (12-pack)

Regular price $210.00 Free Shipping. Made In Australia.
/
Tax included.

-2299 in stock

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.

Available online or in store

BuildTuff at Bunnings

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

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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Why Pros Are Switching from Concrete to 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
FeatureTuffBlockConcrete Block
Weight680 g ~15 - 25 kg 
Break Strength5,000 kg~1,157 kg
Installation Lightweight, fast Heavy, time-consuming 
Durability UV-stable, corrosion-proof Can crack or degrade 
Transport100 blocks in a pickup Multiple trips / heavy lifting
MaterialRecycled high-strength polymer Concrete (porous, cracks)
Post Slot VersatilityFits 90mm x 90mm, 100mm x 100mm posts, and 38 - 51mm joists Limited slot options 
Moisture WickingNon-porous — will not absorb water or suffer from freeze–thaw damage. Ventilated, raised design prevents moisture build-up Porous material absorbs water, which can cause freeze–thaw damage, pitting, and corrosion of any embedded steel.
Warranty25 years None standard
Minimum Deck HeightDecks as low as 152mmTypically requires 305–457mm

Build Smarter with TuffBlocks

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.

Frequently Asked Questions



"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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Built To last

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

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

Australia Wide Shipping

We deliver across Australia 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