INSTANT FOUNDATION SYSTEM
TuffBlocks are a multi-purpose foundation system used for a range of home improvement projects including low profile decks, garden sheds, landings, pathways, cubby houses, dog shelters and more.
TuffBlocks are an extremely popular alternative to digging holes and mixing concrete, which saves both DIY enthusiasts and professional builders time and money.
Not only are you building more effectively and efficiently, you’re building smarter with 100% recycled plastics.
|Product Dimensions||Size & Weight|
|Specification||Instant Foundation System|
|Model Name||TuffBlock Instant Foundation System|
|Dimensions||Width 300mm, Height 90mm, Length 300mm|
|Material||High strength closed loop recycled polyolefin material with an ultra-high UV rating|
|Load Rating||770 kilograms|
|Stirrup Width||Suits 35-41mm or 41-47mm joists and bearers as well as 90x90mm or 100x100mm posts|
Feel free to skip to the part that's most relevant:
0:00 What is a floating foundation system?
0:31 How much weight can each TuffBlock support?
0:43 Are TuffBlocks UV resistant?
0:58 Can I use TuffBlocks on sloping ground?
1:14 Do I need council approval?
1:34 How do posts/joists sit in the TuffBlock and do they require fixing?
1:56 Can TuffBlocks be used on wet surfaces?
2:22 Can I use TuffBlocks on sand?
2:35 Will TuffBlocks sink into the ground?
3:08 Can I use TuffBlocks in high wind areas?
3:27 How many TuffBlocks will I need for my project?
3:57 What if I have ground movement in my area?
Please note BuildTuff offers this information as a general guide only. You should rely only on relevant building codes and standard industry established construction methods in any construction project. For our FAQ, please click here.
Posts: TuffBlock accepts 90x90mm or 100x100mm posts
Joists & Bearers: TuffBlock accepts 35-41mm or 41-47mm joists & bearers
Deck Area Calculator & TuffBlock Estimator
Please use our custom TuffBlock Calculator to estimate your TuffBlocks or use the table below.
|Deck Length (metres)||Deck Width (metres)||Deck Area Calculator (square metres)||Estimated TuffBlocks|
Geometric calculations only (metric). The number of TuffBlocks required is based on 450 mm centers when calculated.
For further clarifications, please view our Master FAQ or Contact Us for more information.
TuffBlock is an ultra-lightweight concrete block alternative with each TuffBlock weighing just 680 grams. A TuffBlock is 19 times lighter than a concrete block and 11 times lighter than the Evo-Crete Handi Block.
TuffBlock's versatility means it can be used across a range of projects. TuffBlocks can also be used as an intermediary solution when used in combination with traditional in-ground concrete methods, where the application requires anchoring.
Strong & Tough
Made in Australia for professionals and home improvement renovators. Each TuffBlock is incredibly strong, with its vertical load designed to support up 770 kilograms and is break tested to 5,000 kilograms.
TuffBlocks are 100% recycled and made from high strength closed loop polymers. Each TuffBlock is made from materials destined for landfill and our oceans. Even better than that, each off-cut is repurposed into a future TuffBlock.
DISCOVER SMARTER WITH
- What are TuffBlocks made from? TuffBlocks are made from high strength recycled plastic. The lightweight material means they’re easily stacked and transported to job sites, unlike traditional concrete deck block methods.
- What's TuffBlock's warranty? TuffBlocks will not chip, crack, corrode or grow mould. We're so confident in the TuffBlock, we offer a 25 year warranty.
- How does TuffBlock save me time? TuffBlocks are perfect for all skill levels and can be used in conjunction with traditional methods to save time and cost. It removes the need for the digging of holes, the pouring of concrete and shifting any subterranean obstacles, like tree roots or pipes.
- Who uses TuffBlocks? TuffBlock empowers professional builders and DIY renovators alike to tackle any project. Build your own outdoor creation, minus the hard labor and long hours. When your reputation and time matter, discover the smarter way to build using TuffBlock.
BUILD USING AN INSTANT FOUNDATION SYSTEM THAT IS DESIGNED TO LAST
"I'm very proud at my first attempt at decking."
Melbourne, Victoria, Australia
"High quality product and easy to use!"
James / Helensvale, QLD, Australia / August, 2020 / July, 2020 / 5 stars
"The TuffBlock Foundation System worked well!"
Brett / Woodend, VIC, Australia / March, 2021 / 5 stars
- Award Winning
- Load Rated
- 25 Year Warranty
- Highly Versatile
- 100% Recycled
- Won't Crack or Chip
This obviously depends on the type and size of the project you are building. As a general rule if you are supporting joists directly on TuffBlocks, you will need to support joists with a TuffBlock at 1.5m intervals. Joists will need to be spaced at a distance appropriate to the finishing material (e.g. it is recommended that some decking timber be spaced at 450mm centres, it is always best to check with your timber/material supplier for material specific recommendations).
As an example, a low level deck 3m x 3m would require 21 TuffBlocks for the above configuration – that is 3 x TuffBlocks per 3m joist, 7 x joists spaced 450mm apart.If you intend on using bearers on top of TuffBlocks, joists on top of bearers, and then decking or finishing material/sheeting – less TuffBlocks will be required. As an example, a low level 3m x 3m deck would require bearers to be supported say every 1.5m, bearers would be spaced every 1.5m to support the joists, so 3 x TuffBlocks per bearer, 3 x bearers = 9 x TuffBlocks.
The above measurements are a basic guide only, refer to the TuffBlock installation guide and your material supplier to ensure correct spacing is maintained for structural integrity.
The Floating Foundation System while relatively new to Australia since we introduced it back in 2011, has been a tried and trusted building system in North America since the late 1980's with literally tens of millions of decks and other structures built using this system. TuffBlock's are an extremely popular alternative to digging holes, carrying heavy concrete blocks, mixing concrete and waiting for it to set. TuffBlock's are a versatile utility block and the options are endless for how you can use them to make completing your projects a breeze.
In most cases, yes. Especially when you consider the time and effort taken to dig multiple holes and then mix the concrete to fill them back in, not to mention the cost of buying the steel post supports and bags of concrete in the first place. Generally a steel post support and two bags of concrete will set you back around AU$35-45. So even if you use a few more TuffBlocks you are still well ahead of the old conventional footing method.
TuffBlocks have been engineered for structures up to 1m above ground. Having said this many people have built structures higher than this using the composite foundation method (TuffBlocks in combination with concrete-in-ground footings). We recommend that you consult with a qualified builder or engineering regarding your special design and environment.
TuffBlocks have been engineered to be stackable and only weigh 680grams each, compared to that of a traditional concrete deck block that weighs 13 kg each!
Made in Australia for professionals and home improvement renovators. Each TuffBlock is incredibly strong, with its vertical load designed to support up to 770 kilograms and is break tested to 5,000 kilograms.
Great question and yes, see our Buy Back Policy for more information!