Pressure Treated Sheds | Premium Quality Garden Buildings
FREE DELIVERY — selected postcodes*  ·  10% OFF GRANDMASTER — CODE GM10

Pressure Treated Garden Buildings

If you’re looking for an outdoor garden storage solution that will provide long-term durability and guaranteed longevity, look no further than our pressure treated sheds. Garden sheds are treated with a special formula that allows…

43 products
Hobbyist H100 Summerhouse - Pressure Treated Tongue and Groove

Hobbyist H100 Summerhouse - Pressure Treated Tongue and Groove

From £903
22 sizes: from 8ft × 6ft to 24ft × 10ft
 Current promotion
Grandmaster "Reverse Apex" D1000 Workshop - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Reverse Apex" D1000 Workshop - 11mm Pressure Treated Tongue and Groove

From £989 £890
12 sizes: from 8ft × 8ft to 20ft × 12ft
Grandmaster Diplomat "Classic" G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Diplomat "Classic" G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove

From £1,631 £1,468
35 sizes: from 8ft × 8ft to 24ft × 14ft
Hobbyist Cannes Plus H100 Insulated Summerhouse - Insulated Tongue and Groove

Hobbyist Cannes Plus H100 Insulated Summerhouse - Insulated Tongue and Groove

From £2,446
6 sizes: from 8ft × 6ft to 12ft × 8ft
Hobbyist Pent H100 Summerhouse - Pressure Treated Tongue and Groove

Hobbyist Pent H100 Summerhouse - Pressure Treated Tongue and Groove

From £1,199
5 sizes: from 8ft × 8ft to 16ft × 8ft
Grandmaster Alpine G1000 Summerhouse Cabin - Long Windows - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Alpine G1000 Summerhouse Cabin - Long Windows - 11mm Pressure Treated Tongue and Groove

From £5,107 £4,596
8 sizes: from 16ft × 9ft to 20ft × 16ft
Grandmaster Diplomat "Classic" G1000 Summerhouse - Offset Door - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Diplomat "Classic" G1000 Summerhouse - Offset Door - 11mm Pressure Treated Tongue and Groove

From £1,631 £1,468
35 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster Duke "Classic" G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Duke "Classic" G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove

From £1,861 £1,675
11 sizes: from 8ft × 10ft to 20ft × 12ft
Grandmaster Alpine G1000 Summerhouse Cabin - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Alpine G1000 Summerhouse Cabin - 11mm Pressure Treated Tongue and Groove

From £4,956 £4,460
8 sizes: from 16ft × 9ft to 20ft × 16ft
Grandmaster Alpine G1000 Summerhouse Cabin - Plain Side - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Alpine G1000 Summerhouse Cabin - Plain Side - 11mm Pressure Treated Tongue and Groove

From £4,956 £4,460
8 sizes: from 16ft × 9ft to 20ft × 16ft
Grandmaster Diplomat "Classic" G1000 Summerhouse - Long Window - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Diplomat "Classic" G1000 Summerhouse - Long Window - 11mm Pressure Treated Tongue and Groove

From £1,681 £1,513
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster Fusion "Classic" G1000 Summerhouse with Side Shed - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Fusion "Classic" G1000 Summerhouse with Side Shed - 11mm Pressure Treated Tongue and Groove

From £2,127 £1,914
25 sizes: from 12ft × 8ft to 24ft × 14ft
Hobbyist H100 Apex Shed - Pressure Treated Tongue and Groove

Hobbyist H100 Apex Shed - Pressure Treated Tongue and Groove

From £720
27 sizes: from 6ft × 6ft to 24ft × 10ft
Hobbyist H100 Pent Shed - Doors in Side - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Doors in Side - Pressure Treated Tongue and Groove

From £741
14 sizes: from 8ft × 6ft to 20ft × 8ft
Hobbyist H100 Pent Shed - Central Door - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Central Door - Pressure Treated Tongue and Groove

From £874
10 sizes: from 10ft × 6ft to 20ft × 8ft
Grandmaster "Heavy Duty" D1000 Workshop Shed - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop Shed - Pressure Treated Tongue and Groove

From £1,549 £1,394
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Apex Workshop Windowless Shed - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Apex Workshop Windowless Shed - Pressure Treated Tongue and Groove

From £1,549 £1,394
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Workshop - with Side Door - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop - with Side Door - Pressure Treated Tongue and Groove

From £1,649 £1,484
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Apex Workshop Shed - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Apex Workshop Shed - Pressure Treated Tongue and Groove

From £1,549 £1,394
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Workshop Windowless - with Side Door - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop Windowless - with Side Door - Pressure Treated Tongue and Groove

From £1,649 £1,484
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Workshop Windowless Shed - Offset Door - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop Windowless Shed - Offset Door - Pressure Treated Tongue and Groove

From £1,549 £1,394
35 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Workshop Windowless Shed - Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop Windowless Shed - Pressure Treated Tongue and Groove

From £1,549 £1,394
36 sizes: from 8ft × 8ft to 24ft × 14ft
Hobbyist H100 Pent Shed - Doors in Side - Windowless - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Doors in Side - Windowless - Pressure Treated Tongue and Groove

From £741
14 sizes: from 8ft × 6ft to 20ft × 8ft
Grandmaster "Heavy Duty" D1000 Workshop Shed – Offset Door – Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Workshop Shed – Offset Door – Pressure Treated Tongue and Groove

From £1,549 £1,394
36 sizes: from 8ft × 8ft to 24ft × 14ft
Grandmaster "Heavy Duty" D1000 Pent Shed - Pressure Treated Tongue and Groove (8ft Internal Depth)
10% offCode GM10

Grandmaster "Heavy Duty" D1000 Pent Shed - Pressure Treated Tongue and Groove (8ft Internal Depth)

From £1,664 £1,498
5 sizes: from 12ft × 10ft to 20ft × 10ft
Grandmaster Fusion D1000 Pent Dual Room – Pressure Treated Tongue and Groove (8ft Internal Depth)
10% offCode GM10

Grandmaster Fusion D1000 Pent Dual Room – Pressure Treated Tongue and Groove (8ft Internal Depth)

From £2,120 £1,908
5 sizes: from 12ft × 10ft to 20ft × 10ft
Hobbyist H100 Pent Shed - Windowless - Central Door - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Windowless - Central Door - Pressure Treated Tongue and Groove

From £874
12 sizes: from 10ft × 6ft to 20ft × 8ft
Hobbyist H100 Pent Shed - Offset Doors - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Offset Doors - Pressure Treated Tongue and Groove

From £741
14 sizes: from 8ft × 6ft to 20ft × 8ft
Hobbyist H100 Apex Shed - Windowless - Pressure Treated Tongue and Groove

Hobbyist H100 Apex Shed - Windowless - Pressure Treated Tongue and Groove

From £720
27 sizes: from 6ft × 6ft to 24ft × 10ft
Hobbyist H100 Pent Shed - Offset Doors - Windowless - Pressure Treated Tongue and Groove

Hobbyist H100 Pent Shed - Offset Doors - Windowless - Pressure Treated Tongue and Groove

From £741
14 sizes: from 8ft × 6ft to 20ft × 8ft
My Den Insulated Garden Office

My Den Insulated Garden Office

From £3,972
4 sizes: from 8ft × 6ft to 10ft × 8ft
Pressure Treated Evolution Insulated Garden Room

Pressure Treated Evolution Insulated Garden Room

From £4,718
19 sizes: from 8ft × 8ft to 20ft × 12ft
My Den Insulated Garden Pod - Pressure Treated

My Den Insulated Garden Pod - Pressure Treated

From £3,972
4 sizes: from 8ft × 6ft to 10ft × 8ft
Grandmaster Clubhouse G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)
10% offCode GM10

Grandmaster Clubhouse G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)

From £1,549 £1,394
5 sizes: from 8ft × 10ft to 24ft × 10ft
My Den Double Door Insulated Garden Office

My Den Double Door Insulated Garden Office

From £6,394
3 sizes: from 12ft × 8ft to 16ft × 8ft
My Den Sliding Doors

My Den Sliding Doors

From £13,995
3 sizes: from 12ft × 8ft to 16ft × 8ft
Grandmaster Diplomat Pavilion G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Diplomat Pavilion G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove

From £9,607 £8,646
7 sizes: from 12ft × 16ft to 20ft × 16ft
Grandmaster Clockhouse Classic G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove
10% offCode GM10

Grandmaster Clockhouse Classic G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove

From £1,999 £1,799
27 sizes: from 8ft × 10ft to 24ft × 14ft
Grandmaster Clubhouse Storeroom G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)
10% offCode GM10

Grandmaster Clubhouse Storeroom G1000 Summerhouse - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)

From £2,499 £2,249
7 sizes: from 12ft × 10ft to 24ft × 10ft
Grandmaster Lounge "Contemporary" G1000 Garden Room - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)
10% offCode GM10

Grandmaster Lounge "Contemporary" G1000 Garden Room - 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)

From £2,225 £2,003
4 sizes: from 10ft × 10ft to 22ft × 10ft
Corner Summerhouse - Pressure Treated Tongue and Groove

Corner Summerhouse - Pressure Treated Tongue and Groove

From £1,099
1 size: 7ft × 7ft
Corner Windowed Shed - Pressure Treated Tongue and Groove

Corner Windowed Shed - Pressure Treated Tongue and Groove

From £999
1 size: 7ft × 7ft
Corner Windowless Shed - Pressure Treated Tongue and Groove

Corner Windowless Shed - Pressure Treated Tongue and Groove

From £999
1 size: 7ft × 7ft
Showing all 43 products

Pressure Treated Garden Buildings

If you’re looking for an outdoor garden storage solution that will provide long-term durability and guaranteed longevity, look no further than our pressure treated sheds. Garden sheds are treated with a special formula that allows them to withstand fungal decay and rot for more than 15 years. Pressure Treated Sheds will also save you money because you’ll never have to treat them again. Rain or shine, your pressure treated garden shed will stand up to the elements.

A huge fine selection of pressured treated sheds for your perusing pleasure. It doesn’t matter if you need a garden office, garden storage, or just a place to escape a passing rain shower, we have the perfect storage solution for you.

We have multiple styles for you to choose from, including various types of cladding and roof types. You can choose from shiplap sheds, overlap sheds, pent sheds and more. It’s all up to you. It’s your choice. It’s your shed.

How does pressure treatment work?

You’ll find that treated timber will outlast any number of wooden sheds you have owned in the past. The process of pressure treating wood involves impregnating the timber with a  special wood preservative. This is done by placing the wood within a cylinder filled with the wood preservative. The end result is a hard-wearing pressure treated timber that’s used to construct amazingly durable sheds.

Extra strong construction

Project Timber sheds are extra durable due to our patented shiplap cladding as well as our easy and strong tongue and groove construction. Coupled with our 15-year anti-rot guarantee, you can rest assured that your shed will last you a very long time.

Invest in a pressure treated shed today

Pressure-treated sheds are the perfect addition to our long line of wooden garden sheds. They’re heavy-duty and have a multipurpose interior that makes them extra versatile. With a hard-wearing smooth wood finish, our pressure treated sheds are second to none!

Made in Britain Free delivery (selected postcodes)* Up to 25-year anti-rot guarantee*