Which Shed

Which Shed Score

Which Shed Score

Forest Xtend 3.0+ Insulated Garden Office 2.98m x 2.9m (97mm)

Shedstore
£9199.00
Buy Sheds Direct
£9199.00

The innovative Forest Xtend 3.0+ Insulated Garden Office is a contemporary garden space tailored to suit your active lifestyle. Along with serving as a perfect home workspace, this versatile garden structure doubles up as a year-round family living area or a cozy hobby retreat.

Pioneering Build
Diverging from traditional home extensions, this premium garden office is crafted using pre-cut, modular Structural Insulated Panels (SIPs). Renowned for superior insulation, energy efficiency and durability, SIPs are rapidly becoming the construction method of choice for many modern homes. Unlike competitors, the Xtend series features SIP construction not only for the walls but also for the roof and floor, resulting in a fully insulated garden office from top to bottom.

The exceptional insulation ensures a damp-free, cool summer, and warm winter interior, creating a conducive work environment for home-based activities throughout the year.

Each wall SIP comprises 97mm insulation enclosed between two OSB boards. Further insulation and finishing are provided by both outer and interior cladding. The interior cladding, primed and ready for painting, consists of MDF with a vertical beaded profile for an elegant aesthetic. On the outside, the high-quality 15mm kiln-dried tongue and groove timber cladding not only provides a stylish look but also ensures weather resistance. Combining SIPs, cladding, and cavities yields an impressive overall wall thickness of 177mm.

Floor and Roof
To boost insulation, the 108mm floor and 122mm pent-style roof also comprise SIPs. While the floor remains uncovered to allow customization with carpet, laminate, or other flooring options, the roof interior is lined with pre-primed cladding for painting. The roof exterior showcases a market-leading black EPDM weatherproof covering with an outstanding 50-year lifespan. This maintenance-free rubber roof is UV-stabilized, resistant to splitting, cracking, moss, or algae growth, and finished with anthracite grey facias for a modern touch.

Forest does not provide electrical installations. However, the 28mm wall battens and 45mm roof battens are designed to accommodate the installation of electrical wiring and recessed lighting by a qualified electrician.

Entryways and Windows
Access to this garden office is facilitated through double-glazed UPVC doors, secured by a 7-point multi-lock mechanism for enhanced security. Two full-length double-glazed windows allow natural light to flood the interior, with the top portions of both windows designed to open for ventilation. The doors and windows feature grain-effect grey outer and smooth white inner frames, combining aesthetics and durability.

Customization and Setup
Available in 3 sizes and with 3 door/window configurations, this top-tier insulated garden office comes with all necessary fixtures, fittings, exterior facias, and a detailed installation guide for straightforward setup. Forest offers a professional installation service performed by expert fitters.

Energy Efficiency and Maintenance
With an energy rating of 78 (category C) and the potential to reach 82 (category B) with a photovoltaic solar panel addition, this garden office epitomizes energy efficiency. Delivered untreated, the exterior will require treatment upon assembly and annual upkeep. Forest Garden recommends utilizing one of the suggested treatments for maintenance.

Delivery
Most UK addresses benefit from free delivery, with free pick-a-day delivery offered in many regions. Some remote postcodes may incur additional charges. Refer to the delivery information for comprehensive details.

– 15-year structural warranty
– Manufactured in the UK using cutting-edge Structural Insulated Panels (SIPs)
– Equipped with 15mm tongue and groove external cladding and MDF interior walls
– 108mm SIP floor and 122mm SIP roof for total insulation
– Features EPDM weatherproof roof with a 50-year lifespan
– Double-glazed UPVC doors with 7-point multi-lock system
– Includes 2 full-length double-glazed windows
– Offered in 3 sizes and with 3 door/window configurations
– Energy rating of 78 (C) with potential to reach 82 (B)
– Free delivery to most UK addresses

Related Products

8'x8' Tiger Loglap Multi Store - Wooden Summerhouse Storage Shed - Whichshed.co.uk

8’x8′ Tiger Loglap Multi Store – Wooden Summerhouse Storage Shed – Whichshed.co.uk

£1761.99
Holt 8' x 7' Alexander Pressure Treated Summer House

8′ x 7′ Summer House Treated with Pressure – Alexander by Holt

£1309.00
Oakley Overlap Apex Summerhouse  - Installation Included / 7x5 / Without Base

Overlapped Oakley Peak Garden House – Including Setup / 7×5 / Excluding Foundation

£1349.99
13x7 Plastic Shed Base Kit

Shire Westminster Summer House – Luxurious Outdoor Retreat

£1139.00
Picton Corner Summerhouse  - Wooden / 8x8 ft / Yes

Picton Corner Summerhouse – Timber / 8×8 feet / Yes

£975.29
Hartwood Life Time 7' x 5' Pressure Treated Overlap Apex Summer House

Unique Lifestyle 7′ x 5′ Treated Overlap Apex Summer House from Hartwood

£574.00
Garden Office - 14'x12' Kipling Log Cabin - Quality Garden Log Cabins - Whichshed.co.uk

The Kipling Log Cabin – Top-notch Garden Log Homes – Whichshed.co.uk

£4053.99
Adley 11' x 7' Chelsea Deluxe Corner Summer House With Side Shed

Adley 11′ x 7′ Chelsea Deluxe Corner Summer House With Side Shed

£1154.00
Tessa Tongue and Groove Reverse Apex Summerhouse  - Wooden / 12x10 ft / Yes

The Tessa Tongue and Groove Reverse Apex Summerhouse – Wooden / 12×10 ft / Yes

£2049.69
Bards 8' x 8' Othello Bespoke Insulated Garden Room - Cedar

Bards 8′ x 8′ Othello Personalized Insulated Garden Room – Cedar

£11359.00
Holly Tongue and Groove Apex Summerhouse  - Wooden / No / 8x10 ft

Forest Tongue and Groove Summit Pavilion – Timber / None / 8×10 ft

£1207.99
Adley 6m x 3m Drayton Insulated Garden Room

Adley 6m x 3m Drayton Insulated Garden Room

£12429.00
6'x8' Tiger Summerhouse - Whichshed.co.uk

6’x8′ Tiger Summerhouse – Whichshed.co.uk

£1129.99
Garden Office & Garden Gym Room - 12'x10' The Javan 28mm Log Cabin - Whichshed.co.uk

Outdoor Studio & Garden Fitness Space – 12’x10′ The Javan 28mm Timber Cottage – Whichshed.co.uk

£2495.99
12'x10' Tiger Retreat Contemporary Summerhouse - Whichshed.co.uk

12’x10′ Tiger Retreat Contemporary Summerhouse – Whichshed.co.uk

£1702.99
Garden Office - 20'x14' The Procas 44mm Log Cabin - Whichshed.co.uk

Backyard Workspace – The Procas 44mm Log Cabin 20’x14′ at Whichshed.co.uk

£5942.99
Oren 6' x 4' Shiplap Apex Mini Summer House

Oren 6′ x 4′ Shiplap Apex Mini Summer House

£664.00
Bards 12' x 8' Williams Custom Summer House - Tanalised or Pre Painted

Bards 12′ x 8′ Williams Tailor-Crafted Summer Cabin – Tanalised or Pre Dyed

£4454.00
Oakley Apex Summerhouse - 8x8 / No Base / Installation Included

Stylish Oakley Apex Garden Retreat – 8×8 / No Foundation / Professional Setup Included

£1899.99
Hartwood 7' x 5' Worcester Pressure Treated Shiplap Apex Summer House

Exquisite 7′ x 5′ Hartwood Worcester Treated Shiplap Apex Summer House

£664.00
Adley 8' x 6' Honeybourne Summer House With 4' Side Shed

Adley 8′ x 6′ Honeybourne Summer House With 4′ Side Shed

£1259.00
Garden Office - 20'x14' The Sigma 44mm Log Cabin Inc Veranda - Whichshed.co.uk

The Sigma 44mm Log Cabin with Veranda – Garden Workspace at Whichshed.co.uk

£6239.99
Oren 18' x 8' Pent Combi Summer House with Side Store - 4ft

Oren 18′ x 8′ Pent Combi Summer House with Side Store – 4ft

£2564.00
Garden Office - 10'x8' The Corbetti 28mm Log Cabin - Whichshed.co.uk

Outdoor Workspace – 10’x8′ The Corbetti 28mm Log Cabin – Whichshed.co.uk

£1917.99
Garden Office - 14'x8' The Corbetti 28mm Log Cabin - Whichshed.co.uk

Garden Studio – 14’x8′ The Corbetti 28mm Timber Cabin – Whichshed.co.uk

£2286.99
Loxley 6' x 6' Barnsley Summer House

Loxley 6′ x 6′ Barnsley Summer House Overview

£549.00
Oren 14' x 6' Apex Combi Summer House with Side Store - 6ft

Oren 14′ x 6′ Peak Combination Summer House with Attachable Storage – 6ft

£1664.00
Adley 3m x 4m Alveston Insulated Garden Room

Adley 3m x 4m Alveston Insulated Outdoor Space

£9349.00
Bards 12' x 10' Burns Custom Summer House

Introducing: Summer Haven Custom Retreat

£3599.00
Garden Office - 16'x14' The Amur 44mm Log Cabin - Whichshed.co.uk

Backyard Workspace – The Amur 44mm Log Cabin 16’x14′ at Whichshed.co.uk

£4873.99
26ft Combi Pent Summerhouse with Side Shed - Green / 26 x 16

26ft All-in-One Pentagonal Cabin with Additional Storage – Emerald Green / 26 Feet by 16 Feet

£9392.52
Oakley Overlap Apex Summerhouse  - 8x10  / No Installation / With Base

Summerhouse Oakley Apex Overlap – 8×10 / Self Assembly / With Foundation

£1399.99
Hartwood 6' x 8' Worcester Pressure Treated Shiplap Apex Summer House

Charming Hartwood 6′ x 8′ Worcester Pressure Treated Shiplap Apex Summer House

£779.00
Garden Office - 12'x12' The Rho 44mm Log Cabin - Whichshed.co.uk

The Rho 44mm Log Cabin – 12’x12′ Garden Workspace – Whichshed.co.uk

£3247.99
Oakley Apex Summerhouse - Installation Included / 7x7 / No Base

Exclusive Oakley Peak Garden House – Professional Set up Provided / 7×7 / No Foundation

£1649.99
Loxley 10' x 6' Dawlish Summer House

Loxley 10′ x 6′ Dawlish Summer Cottage Overview

£1529.00
8'x8' Tiger Vista Corner Summerhouse - Whichshed.co.uk

8’x8′ Tiger Vista Corner Summerhouse – Whichshed.co.uk

£1229.00
Oren 12' x 8' Shiplap Contemporary Poolside Summer House

Oren 12′ x 8′ Shiplap Contemporary Poolside Summer House Overview

£1349.00
Petra Tongue and Groove Reverse Apex Summerhouse  - Wooden / 10x8 ft / Yes

The Petra Tongue and Groove Reverse Apex Summerhouse – Wood / 10×8 ft / Yes

£1485.39
Beckwood Pent Summerhouse 8x6 - Installation Included / Without Base

Rustic Pavilion Springhouse 8×6 – Setup Provided / Excluding Foundation

£1558.99

FAQs

The size of the shed depends on what you plan to store or use it for. Measure the items you plan to store and consider any additional space for moving around or future storage needs. Common sizes range from small (6×8 feet) for basic storage to large (12×24 feet) for workshops or extensive storage.
Sheds are typically made from wood, metal, or plastic. Wood is aesthetically pleasing and customizable but requires more maintenance. Metal sheds are durable and secure but can be prone to rust. Plastic sheds are low-maintenance and easy to assemble but may not be as sturdy as wood or metal.

Permit requirements vary by location. Check with your local building department or zoning office. Typically, small sheds (under 120 square feet) may not require a permit, but larger ones or those with electrical installations often do.

A solid foundation is crucial for stability and longevity. Options include concrete slabs, gravel bases, or wooden platforms. Choose a foundation based on your shed’s size, material, and the ground conditions of your site.
Look for sheds with features like weather-resistant materials, proper sealing, and robust construction. Ensure the shed has a good roof overhang, proper drainage, and secure locking mechanisms to protect against theft and weather damage.
Assembly time depends on the size and complexity of the shed. Small, simple sheds can be assembled in a few hours, while larger or more complex sheds may take a full day or more. Professional installation is also an option for those who prefer not to DIY.
Maintenance depends on the material. Wooden sheds need periodic painting or staining and checking for rot or pests. Metal sheds may need rust prevention treatments. Plastic sheds require minimal maintenance, typically just cleaning as needed.
Moving a shed is possible but can be challenging, especially for larger structures. It’s easier to move a smaller shed if it has a solid base. Consider the logistics and potential costs of moving before installation. If moving is likely, a portable shed might be a better option.
Many sheds come with detailed assembly instructions, making them suitable for DIY installation, especially smaller models. However, larger or more complex sheds may require professional installation to ensure they are properly and safely assembled. Assess your skill level, available tools, and the complexity of the shed before deciding.