Helena Garden Building grey

14x11 120mm Helena Garden Office (left)


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Stunning garden office from Dunster House. This 14ft x 11ft (4.5m x 3.5m approx) garden office is a new edition from Dunster house. The Helena garden office range has a specification far better than any competitor. This office has a secure 9-point locking system and Wide Opening, French Double Doors with a Tall Walkthrough Height. This range also features large, 28mm thick double glazed windows with unique Dunster House Domestic Hinges along with Multi-Point Locking. Unlike some competitors, we use polyurethane insulation in the walls roof and floor, not Rockwool or bubble wrap. We use polyurethane as we feel it is one of the best thermal insulators you can get.


Please Note: All sizes quoted are nominal

  • External Width: 4.34m (14' 2")

  • External Depth: 3.26m (10' 8")

  • Internal Width: 4.10m (13' 5")

  • Internal Depth: 3.01m (9' 10")

  • Internal Area (m2): 12.35m2

  • Ridge Height: 2.48m (8' 1")

  • Internal Eaves (Front): 2.18m (7' 1")

  • Internal Eaves (Rear):1 .99m (6' 6")

  • Roof: Insulated IzoPanel

  • Roof Thickness: 135mm (100mm Insulated core)

  • Roof U-Value (W/m2k): 0.21

  • Overall Wall Thickness:121mm

  • External Timber Thickness: 15mm Shiplap Cladding

  • Framing: 70mm Timber Stud Frame

  • Insulation Thickness: 25mm

  • Insulation Material: Polyurethane

  • Internal Finish: 10mm Gypsum Fibreboard

  • Floor: 40mm Insulated Sandwich Panel

  • Floor Bearers: 35mm, Pressure Treated

  • Door style: uPVC Patio Sliding Door

  • Door Material: Reinforced 5 Chamber uPVC Profile

  • Door Locking: Multi point locking system with 6 pin euro cylinder lock barrel

  • Door Walkthrough Height: 1.91m (6' 3")

  • Door Walkthrough Width: 0.66m (2' 1")

  • Window Locking System: Multi Point with Mushroom Headed Espagnolettes

  • UPVC Colour: White included in price. Upgrade for wider colour range as shown

  • uPVC Colour Options: Choice of Colours Available

  • Glazing Material: 28mm Double Glazed, Toughened Glass

  • Timber: Pressure Treated

  • Guarantee: 10 Years Against Rot and Insect Infestation

  • Approximately DIY Assembly Time: 4 - 5 Days* 

*This is an approximate time only, based on 2 people. Assembly time may vary depending on season/weather conditions, foundation type, ability of those constructing, etc

Please Note: All fixings needed for assembly are supplied. 

All wood is planed and pre-cut (with exception of trims), for quick and easy construction. No electrics or lights included.

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We deliver all over Ireland for all flat-pack sheds, log cabins and playhouses. Our estimated turnaround time for manufactured flat pack delivery is 1-2 weeks NI or 2-3 weeks ROI, lead time for Dunsterhouse log cabins 4-6 weeks. Our lorries deliver a “direct to your door delivery”. This means that flat-packed items will be left on your premises laid flat on the ground for safety. We require a signature upon delivery, and we will contact you with a delivery time and date for your convenience. Please note there is a €150 surcharge on some products delivered to Cork, Kerry and Waterford.

If you have any queries about delivery please email info@shedfactoryireland.ie

Please note:

ShedFactory also offer an installation service (not applicable to metal sheds). Our expert installers can have your shed up that very day. Please click on the installation tab above for more details.

To ensure your purchase lasts as long as it should it's important to follow our recommendations.

Please refer to our Post Installation Manual for more details.

Shedfactory products are designed for maximum durability and ease of installation. We recommend 2 people to install this item. You will receive a step-by-step installation guide along with your delivery. However you can always view our online tutorial here. For Dunsterhouse products they have installation videos for products here. For Climbing Frames click here. We strongly advise that if you are installing on uneven ground, you will need to purchase blocks for levelling (wooden sheds only) Metal sheds need a concrete base. Please click on the other items tab above, and add to your order.

Don't want to install it? We can do it for you!

Shedfactory Ireland can also build and install as required. Our installation service takes the hassle of installing it yourself and you can be guaranteed that it will be perfect.

Please use the drop down box below to receive an installation quote. This can be added during checkout, and we will contact you with a delivery time and date for your convenience.

Based on your selection, you may be interested in the following items:

  • FREE Doorstep Delivery On all sheds

  • 2 Man Assembly Full instructions with delivery

  • Installation Available Please select option at checkout


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