Free Standard Delivery Most items, mainland UK - Shedstore's terms apply
14-Day Right to Cancel From delivery, Shedstore's return charges apply
Sold by Shedstore UK garden building retailer, online for over 24 years
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ProBASE

ProBASE 18x11 Plastic Shed Base Kit with 84 Grids

Recycled grid shed base covering 18x11 feet, easy to lay
£499.99
Free standard delivery*
14 days to cancel*
Sold by Shedstore
Size
18ft x 11ft
For
Grass, soil or gravel
Guarantee
2 years
Cancel
14 days*

*Shedstore's terms: free standard delivery on most items to mainland UK, some remote postcodes pay a surcharge. 14 days from delivery to change your mind; the maker's collection charge comes off the refund.

£499.99
Check Price
Shedstore

About the ProBASE 18x11 Plastic Shed Base Kit with 84 Grids

Need a flat start for a wide building? The ProBASE 18x11 Plastic Shed Base Kit covers 18' x 11', or 6 x 3.5m. Inside the pack are 84 grids and a roll of weed membrane. It replaces a slab or concrete job.

The grids measure 500 x 500 x 40mm. Interlocking edges link them into a single mat. Once laid, the base lets air and water flow under the shed. That helps keep the floor dry. For best results the makers suggest 15kg of pea gravel per square. You buy the gravel separately.

Pick a firm, level site and lay the membrane first. Then click the grids together. It is simple to lay and assemble. The finished base is light yet strong. If you shift the shed one day you can lift and reuse the whole kit.

It suits owners of wide sheds and outbuildings. Recycled plastic makes it kinder to the planet than poured concrete. Heavy-duty membrane and a 2 year guarantee round out the kit. Instructions and customer service support come with it.

What It Is Made From

The grids are made from 100% recycled plastic. They resist rot and do not sink into soft ground. A heavy-duty membrane underneath holds back weeds.

Which Sheds It Suits

This kit covers an 18' x 11' footprint, or 6 x 3.5m. It suits a wide shed, a garden office or a workshop.

Good to Know

Each 40mm deep grid has open cells that spread load across the ground below. Filling them with pea gravel adds stiffness and stops movement. The open build lets rain pass through so water does not sit under the shed. A membrane stops weeds from growing up. Since the kit is modular you can lay it in a day and lift it later.

Laying the Base

Mark out the base area and clear it of rocks and roots. Work on firm, level ground so the grids lie flat. Gravel is heavy, so lift in small loads and wear gloves. Check the finished base with a spirit level before you place the shed on top.
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At Shedstore

Product Features

Interlocking gridsSquare grids click together to make one strong mat
Recycled plasticMade from 100% recycled plastic
Ventilated designWater drains and air flows under the shed floor
Heavy-duty membraneCommercial-grade weed sheet comes in the pack
Re-usable baseLift and relay it if the shed is repositioned

Specifications

BrandProBASE
RangeProBASE
Product typeShed base
Size (feet)18ft x 11ft
Size (metres)6m x 3.5m
Base forGrass, soil or gravel
MaterialRecycled plastic grids with a weed membrane
Guarantee2 years
Product codeECO18X11-6X3.5M-84G
Grids in pack84
Grid size500 x 500 x 40mm
MembraneHeavy-duty weed membrane included
Gravel15kg of pea gravel per square advised (not included)
Sold byShedstore
DeliveryShedstore: free standard delivery on most items to mainland UK, generally on weekdays. Some remote postcodes pay a surcharge. Delivered to the kerbside or your driveway. Listed delivery time: 2 - 5 Working Days.
Cancelling14 days from delivery to change your mind (Shedstore's terms). The maker's collection charge comes off the refund.

Sizes are the maker's figures and are approximate. Please check the details on Shedstore's product page before you order.

Frequently Asked Questions

The pack holds 84 square grids. Together they cover 18' x 11', or 6 x 3.5m.
Every square is 500 x 500 x 40mm. They lock together along the edges.
Yes. It includes heavy-duty, commercially-graded weed membrane. Lay it down before the grids.
No. The makers recommend 15kg of pea gravel per square. You will need to buy it separately.
It needs a firm, level area. Clear and flatten the site before you start.
Yes. If you reposition your shed you can lift the base and lay it again.
Yes. It is made from 100% recycled plastic. That makes the ProBASE 18x11 kit a greener pick than concrete.
The base has a 2 year guarantee. Full instructions and customer service support are included too.

Delivery and Returns

Free Standard Delivery

Shedstore's standard delivery is free on most items to mainland UK, generally on weekdays. Some remote postcodes pay a surcharge, and a paid Pick-A-Day service is offered on some products.

Lead Times

Sheds are sent by the maker, so many have a lead time. The maker contacts you to arrange a delivery date. The postcode checker on Shedstore's product page shows the lead time for your area.

Paying

Shedstore takes most debit and credit cards including Visa and Mastercard (not American Express), Google Pay, Apple Pay and PayPal Credit.

14 Days to Cancel

You have 14 days from delivery to change your mind. Shedstore lists a collection charge for each maker (Keter £50, Shire £30, Palram Canopia up to 10% of the order), taken from the refund.

Ready to Order?

Buy this shed base from Shedstore

£499.99
Check Price
Shedstore

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