*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.
Planning a big outbuilding? The ProBASE 20x12 Plastic Shed Base Kit gives it a level start. It covers 20' x 12', or 6 x 4m. You get interlocking plastic grids and a heavy-duty weed membrane. No mixing. No slabs to lift.
The squares are 500 x 500 x 40mm and made from recycled plastic. Edges lock together to form one mat. Gaps in the design let rain drain and air move beneath your shed. The makers recommend 15kg of pea gravel per square. Gravel is sold separately.
Lay the membrane on firm, level ground. Then interlock the squares. The kit is very quick to install because it needs no tools. Its strong grid still copes with a heavy building. A move later on? You can reuse the base in the new spot.
This size suits large sheds and workshops. Choosing 100% recycled plastic also cuts the need for concrete. A 2 year guarantee covers the kit. Printed instructions and customer service support help if you get stuck.
| Interlocking grids | Squares lock together by hand for a fast build |
| Recycled plastic | Made from 100% recycled plastic |
| Ventilated design | Keeps air and water moving beneath the floor |
| Weed membrane | Heavy-duty commercial-grade membrane is in the pack |
| Reposition ready | Lift the base and reuse it if you move the shed |
| Brand | ProBASE |
| Range | ProBASE |
| Product type | Shed base |
| Size (feet) | 20ft x 12ft |
| Size (metres) | 6m x 4m |
| Base for | Grass, soil or gravel |
| Material | Recycled plastic grids with a weed membrane |
| Guarantee | 2 years |
| Product code | ECO20X12-6X4M-96G |
| Grid size | 500 x 500 x 40mm |
| Membrane | Heavy-duty weed membrane included |
| Gravel | 15kg of pea gravel per square advised (not included) |
| Sold by | Shedstore |
| Delivery | Shedstore: 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. |
| Cancelling | 14 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.
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.
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.
Shedstore takes most debit and credit cards including Visa and Mastercard (not American Express), Google Pay, Apple Pay and PayPal Credit.
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.
Buy this shed base from Shedstore
