SKU: 36578586111

Forest Garden Xtend 4 x 3.42m Insulated Garden Office with 1/4 Window

Sale price$5590.08 Regular price$6211.20
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

Forest Garden Xtend 4 x 3.42m Insulated Garden Office with 1/4 WindowForest Garden Xtend 4. 0M Achieve your work life balance with the Xtend range of garden buildings from Forest Garden. These new buildings have everything you could wish for in a home office contemporary looks, real energy efficiency, ease of construction and keen pricing. Space is at a premium in most homes and extensions are costly. An Xtend garden building is constructed from high quality, energy efcient materials and is underwritten with a 15 year

Forest Garden Xtend 4.0M

Achieve your work/life balance with the Xtend range of garden buildings from Forest Garden. These new buildings have everything you could wish for in a home office - contemporary looks, real energy efficiency, ease of construction and keen pricing.

Space is at a premium in most homes and extensions are costly. An Xtend garden building is constructed from high quality, energy efficient materials and is underwritten with a 15 year structural guarantee

Xtend is a clever choice for your garden building as it comes delivered in pre-cut modular SIP panels ready for assembly. Some of the best designed new homes are now made this way, so why not your new garden building? A step-by-step guide means the build is incredibly straightforward.

Keeping you warm in winter and cool in summer, Xtend delivers real energy efficiency. Double glazed windows, highly efficient insulated walls, roof and ?oor combine to drive down energy costs. It’s a fact that Xtend garden buildings can be as energy efficient as a new-build home – with an EPC energy rating of B.

Features:

STRUCTURAL INSULATED PANELS (SIPS)

  • The core structure of an Xtend building is made from SIPs panels - high performance material for building construction. The 21st century way to build
  • 9 7mm thick insulated walls consist of 75mm of polystyrene insulation sandwiched by two sheets of oriented strand board (OSB)
  • Gives structure and insulation in one pre-assembled and cut-to-size panel
  • Total wall thickness including SIPS panels, internal and external cladding and cavities is 177mm
  • Roof is 11mm OSB + 100mm insulation + 11mm OSB = 122mm total

External Cladding

  • Pre-cut external timber cladding panels for quick and easy assembly
  • No measuring and cutting every single batten and board to size before mounting
  • Cladding panels are simply positioned on the building and screwed into place
  • Panels are made with 15mm thick premium interlocking tongue and groove boards mounted to framing battens
  • Comes untreated and we recommend the application of any of the following:c
  • Sikkens Cetol HLS Plus • Restol Wood Oil • Timmersol ETS Double Protectant • Osmo Country Colour • Osmo Natural Oil Woodstain

Internal Cladding

  • Pre-cut interior MDF panels for quick and easy assembly for walls and ceiling
  • No measuring and cutting every panel
  • Wall panels are mounted to 28mm thick battens creating a cavity perfect for routing electrical wiring
  • Roof battens are 45mm thick to allow for recess roof lights
  • Comes with primer applied – can be painted in a colour of your choice using standard interior emulsion paint
  • The panel design has a vertical beaded profile
  • The floor is left unfinished for you to add your own choice of covering

Roof Covering

  • External roof covering is made from 1.2mm thick EPDM black rubber
  • It creates a maintenance free waterproof membrane
  • Does not crack, split or rot
  • Does not support moss or algae growth
  • UV stable & environmentally friendly
  • Safe and easy to install – the system is laid with cold applied adhesives (supplied)
  • One piece sheet means no joints and no leaks
  • 50 years roof life expectancy
  • Anthracite grey fascias include

Windows & Doors

  • Window material: uPVC 5 chamber
  • Window colour: Anthracite grey externally with grained finish Smooth white internally Window locking: Two double clasp, mushroom headed espagnolettes
  • Door material: uPVC reinforced 5 chamber
  • Door colour: Anthracite grey externally with grained finish Smooth white internally
  • Door locking: 7 point multi-lock with ultion three star security barrel
  • Glazing 28mm, A rated, double glazed, safety glass

Energy Efficiency

  • Highly efficient insulated walls roof and floor
  • Double glazed windows
  • Warm in Winter, cool in Summer
  • Energy efficiency model rating of 78 (category C)*
  • Potential to increase to 82 (category B) with the addition of a photovoltaic solar panel
  • *based on lighting from 3 x 4 watt LED bulbs and heat from a high efficiency wall mounted heat pump

Tech Specs:

  • Weight: 2400 kg
  • Dimensions: 342 × 404 × 250 cm
  • Construction Type: SIPs panels with external Tongue & Groove cladding/internal MDF cladding.
  • Roof Type: Pent
  • Treatment: None (Kiln Dried)
  • Colour: Natural Timber
  • Product Size (h x w x d) cm Overall dimension when assembled, including overhangs: 250 x 404 x 342
  • Width at base (footprint) (cm): 403
  • Depth at base (footprint) (cm): 304
  • Estimated Weight (kg): 2400
  • Material: Various – see spec breakdown.
  • Country of Origin: United Kingdom
  • Wall Cladding Thickness (mm): External 15mm / Internal 9mm
  • Door Type (single / double): Single
  • Number of Windows: 2 (fixed), 1 (opening)
  • Glazing: Yes – Double
  • Glazing Material: Glass
  • Roof Material Inner: SIPs panels
  • Roof Thickness (mm): 122mm
  • Roof Material Outer: EPDM Rubber Membrane
  • Floor Material: SIPs panels
  • Floor Thickness (mm): 108mm
  • Door Locking (eg: plate/wire hasp & staple): 7 point multilock
  • Home Delivery Lead Time: 3 weeks
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 36578586111

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4.7 ★★★★★
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Back To The Basics
Natrona Heights, US
★★★★★ 5
So Good I Need Even More!!
Color: 03 - Beige, Size: Throw (50" X 60")
This is one of the softest most luxurious blankets I have ever found!! Absolutely beyond compare. Lovely and comfy, it’s beyond a steal of a deal. It doesn’t fall apart or tear, and it holds form after wash instead of shrinking. I need more!!
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Reviewed in the United States on May 14, 2026
R
RB
Alexandria, US
★★★★★ 2
Not highest quality
Color: 01 - White, Size: Throw (50" X 60")
Very fuzzy indeed but the material and feel is on the cheaper side unfortunately
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Reviewed in the United States on April 13, 2026
S
Spot
New York, US
★★★★★ 4
Soft, well made
Color: 02 - Pink, Size: Throw (50" X 60")
Bedsure GentleSoft Luxury Faux Fur Pink Throw Blanket for Couch, Soft Fuzzy Fluffy Shaggy Gifts Blanket for Women Mothers Day, Warm Cozy Plush Fleece Throw for Room Decor, 50x60 Inches Our household never seems to have enough blankets or throws, so I decided to try this one for one of my kiddos. Our family is strongly ASD, so I was hoping this would be a winner. The outer shell has a faux fur that looks glittery. It is soft, but also has a weird coating that went hope goes away with washing. The inner side is very soft. It's comfortable to use, and for us, did not trigger any sensory issues. It's got a decent weight for a throw, but isn't obnoxious about it. This throw is enough to keep warm without overheating. At the current price of $39.99, it seems like a good deal. I did remove 1 star for the weird coating, but will update as appropriate.
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Reviewed in the United States on April 7, 2026
F
Frank
Alexandria, US
★★★★★ 5
Quality Faux Fur Throw
Color: 03 - Beige, Size: Throw (50" X 60"), Color: 03 - Beige, Size: Throw (50" X 60")
This blanket is nice and soft. It's an off-white color with one side being faux fur and the other being smooth. It is packaged tight but once unfolded it fluffs out nicely. I have another blanket made by this company and those blankets wash well, although I haven't had this one in the wash just yet. I tend to let the other faux fur blankets I have air dry and that usually works fine. I would caution against high heat on these. Ideally if you follow the cleaning instructions you should be fine though. The cost is on par with most box stores, decent value for what it is. It isn't super heavy and makes a nice throw for various scenarios. It does have a false leather patch on the front side which I am not a huge fan of. That sort of takes away from the authentic fur feel, but it isn't a huge drawback. I show that in one of my photos. Feels nice and cozy and would make a nice book nook blanket or chair covering. No chemical smells or anything like that. Overall very pleased with the product and I definitely recommend this brand from this and prior purchases.
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Reviewed in the United States on April 8, 2026
L
Verified Purchase
Leeah Murray
Houston, US
★★★★★ 5
A Must-Have for Cozy Comfort!
I recently purchased the Serenhom Super Soft Cozy Faux Fur Plush Throw Blanket, and I am absolutely in love with it! If you’re looking for a blanket that combines luxury with comfort, this is the one. First of all, the texture is incredibly soft. The faux fur is plush and velvety to the touch, making it perfect for curling up on the couch with a good book or during movie nights. It’s lightweight enough to use year-round but still warm and cozy, especially on chilly evenings. The quality is also impressive. Even after several washes, the blanket has maintained its softness and hasn’t shed at all—a major plus for a faux fur throw. The stitching is strong, and it holds up well to daily use. In terms of aesthetics, this blanket adds a touch of elegance to any room. Whether you drape it over your bed, couch, or favorite chair, it instantly makes the space look more inviting. Overall, I highly recommend the Serenhom Super Soft Cozy Faux Fur Plush Throw Blanket to anyone looking to add comfort and style to their home. It’s a perfect gift for yourself or a loved one!
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Reviewed in the United States on October 11, 2024

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