Collection: Just Building Blocks
Build Anything with Giant Lego Blocks for Adults
Remember the joy of clicking blocks together? Our giant building blocks bring that same satisfying experience to serious construction projects. No tools, no skills, no limits - just pure building pleasure that lasts decades.
Transform any space in hours, not weeks
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PolyBrick® Double Block
5.0 / 5.0
(4) 4 total reviews
Regular price £0.90 GBPRegular priceUnit price / perSale price £0.90 GBPPolyBrick® Double Block
Regular price £0.90 GBPRegular priceUnit price / perSale price £0.90 GBPPolyBrick® Double Block
Regular price £0.90 GBPRegular priceUnit price / perSale price £0.90 GBP -
PolyBrick® Single Block
5.0 / 5.0
(1) 1 total reviews
Regular price £0.72 GBPRegular priceUnit price / perSale price £0.72 GBPPolyBrick® Single Block
Regular price £0.72 GBPRegular priceUnit price / perSale price £0.72 GBPPolyBrick® Single Block
Regular price £0.72 GBPRegular priceUnit price / perSale price £0.72 GBP -
PolyBrick® Double Cap
Regular price £0.68 GBPRegular priceUnit price / perSale price £0.68 GBPPolyBrick® Double Cap
Regular price £0.68 GBPRegular priceUnit price / perSale price £0.68 GBPPolyBrick® Double Cap
Regular price £0.68 GBPRegular priceUnit price / perSale price £0.68 GBP -
PolyBrick® Single Cap
Regular price £0.58 GBPRegular priceUnit price / perSale price £0.58 GBPPolyBrick® Single Cap
Regular price £0.58 GBPRegular priceUnit price / perSale price £0.58 GBPPolyBrick® Single Cap
Regular price £0.58 GBPRegular priceUnit price / perSale price £0.58 GBP -
PolyBrick® Essentials Bundle (Doubles)
Regular price From £16.80 GBPRegular priceUnit price / perSale price From £16.80 GBPPolyBrick® Essentials Bundle (Doubles)
Regular price From £16.80 GBPRegular priceUnit price / perSale price From £16.80 GBPPolyBrick® Essentials Bundle (Doubles)
Regular price From £16.80 GBPRegular priceUnit price / perSale price From £16.80 GBP -
PolyBrick® Essentials Bundle (Singles)
Regular price From £13.00 GBPRegular priceUnit price / perSale price From £13.00 GBPPolyBrick® Essentials Bundle (Singles)
Regular price From £13.00 GBPRegular priceUnit price / perSale price From £13.00 GBPPolyBrick® Essentials Bundle (Singles)
Regular price From £13.00 GBPRegular priceUnit price / perSale price From £13.00 GBP -
PolyBrick® Essentials Bundle (Mixed)
Regular price From £23.15 GBPRegular priceUnit price / perSale price From £23.15 GBPPolyBrick® Essentials Bundle (Mixed)
Regular price From £23.15 GBPRegular priceUnit price / perSale price From £23.15 GBPPolyBrick® Essentials Bundle (Mixed)
Regular price From £23.15 GBPRegular priceUnit price / perSale price From £23.15 GBP
More Reasons to Buy PolyBrick Blocks
Why PolyBrick® Giant Building Blocks Beat Everything Else
Built to Last Forever
Forget timber that rots or concrete that cracks. These big building blocks are engineered from UV-stable recycled plastic to withstand decades of British weather without maintenance, repairs, or replacements.
No Tools, No Mess, No Stress
Like giant lego blocks, they simply click together. No digging foundations, mixing concrete, or calling contractors. Build professional structures in hours, not weeks.
Completely Weatherproof
Rain, snow, frost, UV rays - our jumbo building blocks handle it all whilst maintaining their strength and appearance. Your creations look perfect year after year.
Change Your Mind, Change Your Look
Don't like the plastic finish? Clad with timber, stone, or any material you prefer. Transform the appearance whilst keeping all the structural benefits.
Let customers speak for us
from 40 reviewsWell impressed with the quality of the product. Well made, strong and attractive. Easy to use. Will definitely be spending £300+ later this year when I can get access to the existing raised bed to replace and renovate.
I made my raised bed from these PolyBricks and I am absolutely thrilled with the results. I was able to hide the roots of the holly tree, which was previously in a rotten barrel and had grown through and into the ground. (See picture 2 and 3). I used a rubber mallet to tap the bricks together so they are nice and tight. It should last a lifetime unless I redesign the garden again! Of course, I can re-purpose these bricks if I choose to. I am now planning to buy some more and build a shed. Just need to decide what to use for the roof.
They seem very strong.Easy to assemble. Good looking end product
Appear to be well made and tough - going to look at painting them with acrylic paint to see if I can match the colour with the stone slabs I have
After a false start with a delivery issue (which was sorted quickly)
I managed to get hold of the samples. They are very well made, sturdy and dimensionally stable. I did experience some fitting issues placing some of the blocks together which appeared to be a tolerance dimension where the "double" block is ever so slightly tapered (deliberate or not - not sure). I have use some, what I would call undue, force to fit. But once in it proved solid and id not then come apart easily (Probably a good thing if your were constructing a wall or such like!.) On the whole I would say these blocks are very well made with three colours which should "weather down". I would like to use and will keep them in mind when I find a suitable application. Would like to see a job actually finished using them. I think the sample idea is brilliant.
This is the second time I have bought from this business and I am very happy with their products. The website is very helpful and customer services are excellent. The products are well made and easy to use at a competative price.
The poly brick sample quickly was well made and easy too use.
Thank you for the sample pack of bricks, they seem very strong, easy to use and ideal for a variety of garden uses. I may decide to make a raised bed for veg growing.
Good idea sending samples like that can see the possibilities of this product I just need to see if it will work the project I have in mind.
Hi. Looks a very good product and nice to know what is available although I don’t have a use for it at the moment but would happily use if a situation arises.
Excellent quality and easy to use, fully recommend the product.
Thank you, I will be measuring up for my first polybrick project this afternoon and hopefully put in an order later. Thanks.
Infinite possibilities. One simple system.
Start small with a planter, expand into retaining walls, reconfigure into seating - our modular construction system grows with your imagination. Every component works together perfectly, so you can build, rebuild, and create exactly what your space needs.
Double Blocks for main construction. Single Blocks for precision finishing. Caps in three colours for the perfect edge. Mix, match, and build without limits.
Building a Better Future, One Block at a Time
British-made sustainability that performs better than traditional alternatives. Every PolyBrick® giant building block is made from 100% recycled polypropylene right here in the UK. By choosing our large lego blocks, you're not just building amazing structures - you're helping divert plastic waste from landfills and reducing demand for virgin materials.
Creative Ideas & Inspiration
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Building a Garden Chair
How Our MD Ted Built His Garden Chair in Just 1 Hour Even when you're the Managing Director of PolyBrick®, there's nothing quite like putting your own product to the...
Building a Garden Chair
How Our MD Ted Built His Garden Chair in Just 1 Hour Even when you're the Managing Director of PolyBrick®, there's nothing quite like putting your own product to the...
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Building a Tiered Herb Planter
Building a Two-Tier Herb Planter: Kevin's Kitchen Garden Success Story When Kevin from Norfolk decided to grow his own herbs, he faced a common problem - limited space and poor...
Building a Tiered Herb Planter
Building a Two-Tier Herb Planter: Kevin's Kitchen Garden Success Story When Kevin from Norfolk decided to grow his own herbs, he faced a common problem - limited space and poor...
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Building a Large Tree Planter
Replacing an Oak Barrel: Building a Large Tree Planter with PolyBrick® When Luna's beloved oak barrel planter finally gave up after years of faithful service, she faced a dilemma. Her...
Building a Large Tree Planter
Replacing an Oak Barrel: Building a Large Tree Planter with PolyBrick® When Luna's beloved oak barrel planter finally gave up after years of faithful service, she faced a dilemma. Her...
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Building a Garden Raised Bed
Take a look at this raised bed built by the IBRAN team. In less than an hour, the team at IBRAN assembled this massive three-sided raised bed area. The brief...
Building a Garden Raised Bed
Take a look at this raised bed built by the IBRAN team. In less than an hour, the team at IBRAN assembled this massive three-sided raised bed area. The brief...



