No digging. No waiting. Just place & build

Build Shed Foundations Without Concrete

Perfect for garden sheds, storage sheds & outdoor buildings

Perfect for garden sheds, storage sheds & outdoor buildings

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Engineered for strength. Trusted in 150,000+ builds.

No digging. No slab. No waiting.

Start Building

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Man holding a TuffBlock deck block on a shed foundation built without concrete using TuffBlock system

Build smarter. Build lighter.
Build with confidence.

✔ 26x lighter than concrete 
✔ Supports up to 1,700 lbs per block (break tested to 11,000 lbs)
✔ No digging. No waiting. No concrete.

Limited Spring Build Sale 

24 Pack - $259 ($10.78 per block)

Start Your Build Today

Build smarter. Build lighter.
Build with confidence.

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

Free Shipping USA Wide.
Available online & at Lowe’s nationwide

26x lighter than concrete 
Supports up to 1,700 lbs per block
Break-tested to 11,000 lbs
✔ Made in the USA from 100% recycled materials

Build smarter. Build lighter. Build with confidence.

Limited Spring Build Sale - 10% Off

24 Pack - $259 ($10.78 per block)

Shop Now Calculate Number of Deck Blocks

Free Shipping USA Wide. Available online & at Lowe’s nationwide

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

Build smarter. Build lighter.
Build with confidence.

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Engineered for strength. Trusted in 150,000+ builds.
No digging. No slab. No waiting.

Start Your Build Today

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

ICC Certified

150K+ Real Builds

25 year warranty 

MADE in USA

ICC Certified 

150K+ Real Builds

25 year warranty 

MADE in USA

No digging. No waiting. Just place & build

Build Shed Foundations Without Concrete

Perfect for garden sheds, storage sheds & outdoor buildings

Perfect for garden sheds, storage sheds & outdoor buildings

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Engineered for strength. Trusted in 150,000+ builds. No digging. No slab. No waiting.

Man holding a TuffBlock deck block on a shed foundation built without concrete using TuffBlock system

Build smarter. Build lighter.
Build with confidence.

Perfect for garden sheds, storage sheds & outdoor buildings

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Engineered for strength. Trusted in 150,000+ builds.

No digging. No slab. No waiting.

Start Building

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

✔ 26x lighter than concrete 
✔ Supports up to 1,700 lbs per block (break tested to 11,000 lbs)
✔ No digging. No waiting. No concrete.

Limited Spring Build Sale 

24 Pack - $259 ($10.78 per block)

Start Your Build Today

Build smarter. Build lighter.
Build with confidence.

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

Free Shipping USA Wide.
Available online & at Lowe’s nationwide

26x lighter than concrete 
Supports up to 1,700 lbs per block
Break-tested to 11,000 lbs
✔ Made in the USA from 100% recycled materials

Build smarter. Build lighter. Build with confidence.

Limited Spring Build Sale - 10% Off

24 Pack - $259 ($10.78 per block)

Shop Now Calculate Number of Deck Blocks

Free Shipping USA Wide. Available online & at Lowe’s nationwide

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

Build smarter. Build lighter.
Build with confidence.

✔ No concrete slab required
✔ No digging or excavation
✔ Works on compacted gravel
✔ Supports heavy sheds (1700 lbs per block)
✔ Ideal for uneven ground

Engineered for strength. Trusted in 150,000+ builds.
No digging. No slab. No waiting.

Start Your Build Today

Free Shipping USA Wide. 
Available online & at Lowe’s nationwide

ICC Certified

150K+ Real Builds

25 year warranty 

MADE in USA

ICC Certified 

150K+ Real Builds

25 year warranty 

MADE in USA

TuffBlock deck blocks 8-pack — floating deck foundation, free US shipping
TuffBlock deck block with 2x timber joist installed — no cutting required
TuffBlock deck block with 4x4 post — instant foundation for floating decks
Lightweight TuffBlock deck blocks — stackable and easy to transport on site
TuffBlock deck blocks — UV stabilised, won't crack, corrode or absorb water
TuffBlock deck blocks installed under deck frame — fast no-dig foundation
TuffBlock deck blocks vs concrete deck blocks — weight, load and warranty comparison
TuffBlock deck blocks stacked — 26x lighter than concrete deck blocks
TuffBlock deck block top view — accepts 4x4 posts and standard deck joists
TuffBlock deck block base — ventilated underside prevents moisture and wood rot
TuffBlock deck block load rating — supports 1,700 lbs per block
TuffBlock deck blocks work on all surfaces — soil, sand, clay, gravel and concrete
TuffBlock deck blocks 8-pack — floating deck foundation, free US shipping
TuffBlock plastic deck blocks 24-pack - no-dig floating foundation system
TuffBlock deck block with 2x timber joist installed — no cutting required
TuffBlock deck block with 4x4 post — instant foundation for floating decks
Lightweight TuffBlock deck blocks — stackable and easy to transport on site
TuffBlock deck blocks — UV stabilised, won't crack, corrode or absorb water
TuffBlock deck blocks installed under deck frame — fast no-dig foundation
TuffBlock deck blocks vs concrete deck blocks — weight, load and warranty comparison
TuffBlock deck blocks stacked — 26x lighter than concrete deck blocks
TuffBlock deck block top view — accepts 4x4 posts and standard deck joists
TuffBlock deck block base — ventilated underside prevents moisture and wood rot
TuffBlock deck block load rating — supports 1,700 lbs per block
TuffBlock deck blocks work on all surfaces — soil, sand, clay, gravel and concrete
How to install TuffBlock deck blocks — floating deck foundation
TuffBlock deck blocks installation guide — no dig, no concrete, build same day
TuffBlock deck blocks 8-pack — floating deck foundation, free US shipping

TuffBlock Deck Blocks - No-Dig Instant Foundation System

(431)

8 pack → Small sheds (6×6, 8×6)
24 pack → Larger sheds (10×10, 12×12)

Choose your pack size

• Accepts 3.5" x 3.5" or 4" x 4" posts
• Fits 1½"–2" joists & bearers
• Support up to 1,700 lbs per block
• No digging, no concrete, no waiting

Start your build this weekend - not next month

🔥 High demand this season

Ready to ship - start building sooner
✔ Free shipping     
✔ Secure checkout   
 ✔ 25 year warranty

✔ Free shipping 
✔ Secure checkout 
✔ 25 year warranty

View Details

Not sure how many Shed Blocks you need? 

Shed Block Calculator
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

Inspector-Ready Documentation

TuffBlock has been assessed by the International Code Council and is shown to be compliant with the following:

2021 & 2018 International Building Code (IBC)
2021 & 2018 International Residential Code (IRC)

Along with a range of specific city building codes:

2020 City of Los Angeles Building Code (LABC)
2020 City of Los Angeles Building Code (LARC)
2019 California Building Code (CBC)
2019 California Residential Code (CRC)
2020 Florida Building Code - Building
2020 Florida Building Code - Residential

Compliance may vary by local jurisdiction. Always check with your building authority.

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

How to Build a Shed Base in 3 Simple Steps

Perfect for garden sheds, storage sheds, workshop sheds and uneven ground builds.

Preparing ground for shed foundation using compacted gravel without concrete for TuffBlock base1

PREPARE BASE

Clear vegetation and level the area. Compact the ground and add a gravel base where needed to create a stable foundation for your shed.

shed-base-tuffblocks-placement-leveling-foundation.webp__PID:45934695-e0bc-4c47-811b-0fe5f71175d92

PLACE & LEVEL TUFFBLOCKS

Position TuffBlocks on your prepared base and adjust each point to create a level foundation - even on uneven or sloped ground.

installing-shed-subfloor-frame-on-tuffblock-foundation.webp__PID:009191d5-93f1-4444-83ef-7da2e2c27a293

BUILD FRAME & INSTALL SUBFLOOR

Build your shed frame on top of the leveled TuffBlocks, then install the subfloor to create a strong, square, and ready-to-build foundation.

Availlable Online & In-Store

Untitled design (14).png__PID:a0bc3df4-ac61-4c37-9b2f-b1efa02236ce

Available Online
& In-Store at

Tuffblock available in Lowes

4.9/5 Rated by 400+ Builders & DIYers

You have not selected a product to show reviews

Real-World Shed Foundation Comparison

Based on a typical shed base (8–12 supports)

Concrete Footings

~800–1,200 lbs handled
5–8 hours setup

Digging, mixing & pouring
Heavy labour
Curing time can delay your build

Concrete Blocks

~400 lbs handled
1.5–2.5 hours setup

Heavy lifting
Repeated repositioning
Higher physical strain

TuffBlock

~15 lbs handled
30–60 mins setup

Lightweight
Fast adjustments
Minimal strain

tuffblock-vs-concrete-footings-time-labour-cost-savings-shed-foundation.webp__PID:917a3a35-5e60-4a4f-b4d8-dfc7d8a6a0bctuffblock-vs-concrete-footings-time-labour-cost-savings-shed for-foundation.webp__PID:073781e9-8820-4d23-b678-b413c9bb3e5c

*TuffBlock compared to concrete footings

Built to Handle Real Job Site Conditions

Frost heave?

TuffBlocks sit on a compacted gravel base, allowing natural ground movement without cracking like concrete footings.


✔ Used successfully in freeze-thaw climates across North America

Sinking?

The wide base spreads load evenly. Installed on compacted gravel, TuffBlocks create a stable, long-term foundation.


✔ Supports up to 1,700 lbs per block

High Wind?

In high-wind areas, builders often secure structures with earth anchors or combine TuffBlocks with in-ground footings for additional stability.


✔ Used successfully in storm-prone regions across North America

Code Compliance?

TuffBlocks are ICC-ES certified and used in thousands of residential builds across the U.S.


✔ Always check local building guidelines before starting your project

Build With Confidence Today

✔ Built for real-world conditions
✔ Trusted across North America

Watch How to Build a Shed Base in Under a Day

Watch how to build a shed foundation fast using TuffBlocks without concrete

Over 150,000 builds worldwide use TuffBlock foundations.

TuffBlock by BuildTuff logo

Enter your project size to instantly estimate how many TuffBlocks you need.

✔ Based on standard joist spacing (16" OC)
✔ Works for sheds, platforms & floating decks
✔ No digging or concrete required

Project Length (ft)Project Width (ft)Project Area Calculator (sq ft)Estimated TuffBlocks
8129624
201020042
201224042
301030060
201632056
351035072
TuffBlock - Another BuildTuff System

Engineered smart. Built tougher.

As seen on leading TV networks and building influencers.

Divine Living logo (1).webp__PID:adc5cda1-41b0-4777-96b5-21a10dc551c3
woodbully logo  (1).webp__PID:c6fbaf02-e7f9-4987-8b6d-9d6c523e6461
7 two logo  (1).webp__PID:36f9e931-5004-4792-84fb-e80924c3deae
BYOT logo (2).webp__PID:c7bf32ef-c595-461f-9a40-858bb70dbe84
AW logo  (1).webp__PID:86f0d59f-9d3f-4dc5-b4d4-dad35cef5980
HM logo (1).webp__PID:46516b89-78ac-4e0e-9800-b08e93976d18

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.

Don’t Risk Your Build on Unverified Deck Blocks

tuffblock-vs-adjustable-deck-support-comparison.webp__PID:44459759-5622-461d-b063-bdbc12a7070a

TuffBlock

✔ Load rated and tested
✔ Proven with 150K+ real builds & zero warranty claims
✔ Break tested under high stress
✔ Manufactured using structural-grade polymer
✔ UV-stabilized for outdoor durability
✔ Designed with weight distribution geometry
✔ 25 year warranty
✔ Made in the USA

Unverified Imitators

✘ Unverified overseas imports
✘ Do not publish verified load ratings
✘ Do not provide break testing data
✘ No certification
✘ Use unknown material composition
✘ Offer limited traceability or warranty

Start Your Shed Foundation Today

✔ Faster install. Less labour. Better results

Frequently asked Questions

How to Build Easy With TuffBlocks

1

Drop

41.png__PID:b420c933-a856-475e-a49d-2242a8d511b7

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

42.png__PID:31f765b7-0e70-41be-853c-62d650593c65

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

43.png__PID:7fc940cd-e695-462b-9ca1-747c2e1346e0

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.

Horizontal Ad Asset - Google (8).png__PID:65c9bbf7-fd60-4892-9623-dfbc4778722a

✔️ No curing time. No mess. Build immediately.

Shop Now
Untitled design (16).png__PID:41604042-4e47-4356-ae43-b4468961ebd6

Built To last

Untitled (800 x 100 px) (1).png__PID:b62add30-2f76-44b9-bde4-9aa993e04ec5

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

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!