Foldout Concrete Slab / Shed Base - 2m² to 6m² Metre

• Install in under an hour – no need for mixers, formwork, or wet concrete on-site
• Built to last – 120-year lifespan with tested compressive strength of 80 MPa
• Minimal site prep – no hardcore base needed, just a compacted sand layer
• Reduces project delays – store on-site and deploy when needed
• Less water, less waste – eco-efficient and cleaner than traditional pouring
• Drives down cost – no need for specialist labour or heavy equipment
• Versatile use cases – sheds, greenhouses, tanks, outdoor workspaces and more
• Strong enough for vehicles – handles light traffic from cars, vans, and ATVs

Installation Made Simple

No wet mix. No timber frame. No stress. Here's how it works:

1. Prepare the base – lay and level a 2–5cm bed of compacted sand

2. Roll out the slab – unfold and fix using the supplied pegs and metal edge guards

3. Add water – use approx. 3.5 litres per square metre (a hose pipe works best)

Allow 24 hours to cure — then build.
Note: For fixing on concrete or rock, we supply masonry bolts on request.

A Smarter Concrete Base – Without the Mess or the Hassle

The InstaSlab is a foldout, concrete-filled mat that sets into a durable foundation within 24 hours — with zero formwork, mixing or heavy machinery. Ideal for a wide range of small to medium-sized outdoor structures, it’s used not just under water tanks, but increasingly as a low-hassle base for sheds, greenhouses, garden offices, tool storage, and off-grid builds.

Delivered rolled up for easy access to hard-to-reach areas, the slab can be installed by just two people using basic tools. Simply prepare a level sand base, roll it out, fix the slab using the included pegs and protectors, then hydrate it with a hose. After curing for 24 hours, the surface is ready to build on.

Made in the UK from a reinforced concrete canvas, this cementitious composite achieves 80 MPa strength (or 815 kgf/cm²) — equivalent to that of structural concrete. It’s also watertight, UV-resistant, and will never rot or degrade like timber.

Available Sizes

Choose from 2m², 3m², 4m², 5m² or 6m² slab kits.
Need a specific size? Bespoke options are available – just contact us.

Where It’s Commonly Used

• Garden buildings – sheds, greenhouses, home offices, log stores

• Agricultural sites – tool huts, animal shelters, off-grid pump houses

• Construction sites – temporary welfare cabins or outdoor workstations

• Rainwater harvesting & tanks – compatible with Deploy concrete tanks

• Drive-on hard standing – for light vehicles like ATVs, mowers, or vans

• Emergency & off-grid infrastructure – disaster relief, defence, or mobile utility setups

Delivery

Our price includes delivery to an England or Wales address. If delivery to Scotland is required, please get in contact for an accurate delivery cost.