120 sq ft · free UK delivery
20 x 6 Sheds
Every 20x6 (6x20) garden building we make — a 120 sq ft footprint, UK-manufactured, free mainland delivery. Prices below are live and identical to what you'd pay at checkout.
20 x 6 Apex Shed
FSC pressure-treated timber
From £1,713.59
20 x 6 Pent Shed
FSC pressure-treated timber
From £1,713.59
20 x 6 Composite Pent
30-year composite, EPDM roof included
From £3,358.07
20 x 6 Composite Apex
30-year composite, EPDM roof included
From £3,358.07
20 x 6 sheds you can buy today
In stock and ready to order — tap through for photos, specs and the full price.
20x6 Composite Apex Potting Shed
Internal height 1757mm eaves · 2021–2417mm (by width) ridge
Breathable membrane included FREE
£3,612.94£4,516
FREE mainland delivery in 3–5 days
20x6 Composite Pent Full Height Summer House
Internal height 1887mm front · 1757mm rear
Breathable membrane included FREE
£4,278.41£5,348
FREE mainland delivery in 3–5 days
20x6 Composite Pent Potting Shed
Internal height 1887mm front · 1757mm rear
Breathable membrane included FREE
£3,612.94£4,516
FREE mainland delivery in 3–5 days
20x6 Composite Pent Security Shed
Internal height 1887mm front · 1757mm rear
Breathable membrane included FREE
£3,307.23£4,134
FREE mainland delivery in 3–5 days
20x6 Pent Composite Shed (Single Door, No Windows)
Internal height 1887mm front · 1757mm rear
Breathable membrane included FREE
£3,358.07£4,197
FREE mainland delivery in 3–5 days
20x6 Pent Composite Shed (Single Door, With Windows)
Internal height 1887mm front · 1757mm rear
Breathable membrane included FREE
£3,358.07£4,197
FREE mainland delivery in 3–5 days
Doors where YOU want them
Off-the-shelf sheds fix the door position. The Build Studio prices any 20x6 layout instantly — doors, windows, even internal rooms.
20 x 6 shed questions
What base do I need for a 20x6 shed?
A firm, level base slightly larger than 20ft x 6ft. A pressure-treated timber base (£660) can be added to your order and sits directly on level ground or slabs.
Is delivery really free on 20x6 sheds?
Yes — free delivery to most of UK mainland. Surcharges apply only to Highlands, islands and Northern Ireland.
Can I choose where the door and windows go on a 20x6 shed?
Yes. Unlike fixed off-the-shelf sheds, the Build Studio lets you position doors and windows exactly where you want them, with live pricing.
