20 x 12 pressure treated buildings

Project Timber offers 20 x 12 Pressure Treated Buildings and...

Showing 1–18 of 19 results

"Heavy-Duty Workspace"

Grandmaster “Heavy Duty” D1000 Workshop Shed – Pressure Treated

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From £1599

£1,199

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
"With Free Double Glazing"

Grandmaster Diplomat Garden Room – Pressure Treated

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From £2749

£2,062

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster Diplomat Garden Room – Offset Door – Pressure Treated

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From £2749

£2,062

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” Apex Workshop – Windowless – Pressure Treated

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From £1699

£1,274

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” Apex Workshop – Pressure Treated

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From £1399

£1,049

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” D1000 – Windowless – Pressure Treated

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From £1699

£1,274

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Pressure Treated Grandmaster Clockhouse Garden Room

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From £3499

£2,624

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Pressure Treated Grandmaster Fusion with Side Shed

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From £3125

£2,344

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

12 x 8 14 x 8 16 x 8 18 x 8 22 x 8 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” D1000 – Offset Doors – Windowless -Pressure Treated

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From £1399

£1,049

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” D1000 Workshop – Offset Doors – Pressure Treated

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From £1399

£1,049

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster Duke Summerhouse – Pressure Treated

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From £2249

£1,687

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

10 x 8 12 x 8 16 x 8 8 x 10 10 x 10 12 x 10 16 x 10 20 x 10 12 x 12 16 x 12 20 x 12
Pressure Treated Diplomat Grandmaster Long Window Summerhouse

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From £2749

£2,062

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FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Grandmaster “Heavy Duty” Apex Workshop with Side Door – Pressure Treated

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From £2199

£1,649

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
Pressure Treated Alpine Grandmaster Summerhouse Cabin

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From £4875

£3,656

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
Pressure Treated Evolution Insulated Garden Room

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From £5995

£4,496

Deko Price Here

FREE delivery from

Jan, 3rd Wed*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12
Grandmaster Alpine Summerhouse Cabin – Plain Side – Pressure Treated

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From £4749

£3,562

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
Grandmaster Alpine Summerhouse Cabin – Long Windows – Pressure Treated

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From £4999

£3,749

Deko Price Here

FREE delivery from

Dec, 20th Wed*

In Stock

Sizes

16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
Grandmaster “Heavy Duty” Apex Workshop with Side Door – Windowless – Pressure Treated

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From £2199

£1,649

Deko Price Here

FREE delivery from

Dec, 8th Fri*

In Stock

Sizes

8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14

Subtotal	£0.00
Total	£0.00

Size

Product Range

Roof Style

Door Style

Treatment

Windows

Features

Popular

Availability

"Heavy-Duty Workspace"

Grandmaster “Heavy Duty” D1000 Workshop Shed – Pressure Treated

Dec, 20th Wed*

"With Free Double Glazing"

Grandmaster Diplomat Garden Room – Pressure Treated

Dec, 20th Wed*

Grandmaster Diplomat Garden Room – Offset Door – Pressure Treated

Dec, 20th Wed*

Grandmaster “Heavy Duty” Apex Workshop – Windowless – Pressure Treated

Dec, 20th Wed*

Grandmaster “Heavy Duty” Apex Workshop – Pressure Treated

Dec, 20th Wed*

Grandmaster “Heavy Duty” D1000 – Windowless – Pressure Treated

Dec, 20th Wed*

Pressure Treated Grandmaster Clockhouse Garden Room

Dec, 20th Wed*

Pressure Treated Grandmaster Fusion with Side Shed

Dec, 20th Wed*

Grandmaster “Heavy Duty” D1000 – Offset Doors – Windowless -Pressure Treated

Dec, 20th Wed*

Grandmaster “Heavy Duty” D1000 Workshop – Offset Doors – Pressure Treated

Dec, 20th Wed*

Grandmaster Duke Summerhouse – Pressure Treated

Dec, 20th Wed*

Pressure Treated Diplomat Grandmaster Long Window Summerhouse

Dec, 20th Wed*

Grandmaster “Heavy Duty” Apex Workshop with Side Door – Pressure Treated

Dec, 20th Wed*

Pressure Treated Alpine Grandmaster Summerhouse Cabin

Dec, 20th Wed*

Pressure Treated Evolution Insulated Garden Room

Jan, 3rd Wed*

Grandmaster Alpine Summerhouse Cabin – Plain Side – Pressure Treated

Dec, 20th Wed*

Grandmaster Alpine Summerhouse Cabin – Long Windows – Pressure Treated

Dec, 20th Wed*

Grandmaster “Heavy Duty” Apex Workshop with Side Door – Windowless – Pressure Treated

Dec, 8th Fri*

Order Summary

Total:

£0.00

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