Van HageVan HageVan Hage
0800 111 4633 9am - 5pm Daily

Forest Garden Xtend 3.0M - Home Delivery only


In StockIn StockOut of stock

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... Read more

Item No:842235
Out of stock

This product will be delivered directly from the manufacturer.

Not available for collection.

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 floor 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.

Product Code: XTEND3.0HD

All fixtures, fittings and step-by-step instructions included

Click here to view the Xtend Brochure: 
Xtend_Sales_Aid_Forest_LOW-RES.pdf (

For full technical specifications, click here: 
Xtend - Forest Garden

Installation Instructions
XTEND2.5.pdf (


  • 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


Height 250cm
Depth 290cm
Width 298cm 
Estimated Weight (kg): 1800kg


Construction Type: SIPs panels with external Tongue & Groove cladding/internal MDF cladding.
Roof Type: Pent
Treatment: None (Kiln Dried)
Colour: Natural Timber
Width at base (footprint) (cm): 297cm
Depth at base (footprint) (cm): 250cm
Material: Various – see spec breakdown.
FSC Approval: N/a
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: 4-6 Weeks
Installation Time: 6-8 weeks

With over 60 years of experience at the cutting edge of garden and leisure retailing, we remain at the forefront of horticulture. With three UK Garden Centres and a fantastic online Garden Centre we are here to help you with your horticultural needs. Our staff are friendly and knowledgeable and look forward to introducing you to the exciting range of garden supplies for sale at our online Garden Centre and in-store.

Our three Garden Centres are based in Great Amwell, Chenies and Peterborough and are more than just a Garden Centre! As well as an extensive range of plants, garden furniture for sale and all things gardening our Centres include a number of exciting attractions to make Van Hage a great place for a day out at any time of the year.

Please be aware that stated website delivery charges apply to ONLINE ORDERS ONLY and not to purchases made at any of our Garden Centres.

We are dedicated to your total shopping satisfaction. For any enquiries about an order, a delivery, or comments about our website service please email us at or call 0800 111 4633 and quote your order number (if applicable).

Our full delivery policy can be found below as well as our delivery terms & conditions at the base of the page. Please contact us directly for all premium delivery enquiries. Please note that we do not deliver to destinations outside of the United Kingdom

For local delivery information please see here: Local Delivery

FREE Standard Delivery on orders of £100 and above*
Every effort is made to deliver extra large purchases such as furniture sets and bulk bags within 10 working days.

Orders under £100:
Delivery charge £4.99 per order (*excluding compost). Delivery estimate approx 2-4 working days.

Orders above £100:
FREE* Delivery on order (*excluding compost)Delivery estimate approx 2-4 working days by DHL.

Extra Large Items - Furniture Sets, Bulk Bags, Large BBQ's, Large Water Features etc:
In stock Items - delivery estimate approx 7-10 working days (Mon-Fri) via Pallet Delivery Agent. (Kerbside only)

Supplier Direct Items:
Delivery estimate 7-28 working days (Mon-Fri) via Pallet Delivery Agent (Kerbside only) or Supplier's Own Courier. 

Forest Garden & Kelkay:
Please note, our Forest Garden & Kelkay Supplier Direct products maybe listed at a higher price online to instore, this includes a direct delivery charge from the supplier. Items purchased in store and delivered from the store will be delivered for a lower price.

Rolawn Home Delivery Service: Rolawn will contact customers directly to advise delivery date and any detailed delivery information to ensure safe access to given address to unload goods.  

Delivery to UK mainland only: Deliveries are made between 8am-6pm kerbside only, Monday - Friday. Rolawn Turf, bulk bags and pallets are non-returnable. Current delivery timescale is 7-10 working days. (Working days are Mon-Fri excluding bank holidays)

Find full details of our delivery terms here.

You may also like
Not enough items available. Only [max] left.
Save for laterView saved itemsRemove
Shopping basket

Your basket is empty.

Return To Shop

Forest Garden Xtend 3.0M - Home Delivery only