Our Helena garden office range has a specification far better than any competitor. This office has a secure 9-point locking system on the sliding Patio Doors, and a Tall Walkthrough Height. This range also features large, 28mm thick double glazed uPVC windows with unique Dunster House Domestic Hinges, along with Multi-Point Locking. Unlike competitors, we use PIR (Polyisocyanurate) insulation in the walls, roof and floor, not rockwool or foil backed bubble wrap. We use PIR (Polyisocyanurate) as we feel it is one of the best thermal insulators you can get.
Domestic Standard uPVC Windows and Doors
28mm Double Glazing
Energy Saving High Density Insulation
Tall Sliding Patio Doors with 9-Point Lock
Waterproof Insulated IzoPanel Roof
Moisture Resistant Walls and Floor
Fire Resistant Inner Wall
Pressure Treated Timber for Longevity and Low Maintenance (10 Year Guarantee Against Rot and Insect Infestation)
Easy to Build Panel System
Dunster House Ltd. – Over 25 Years Of Supplying Quality Products
External Width: 5.43m (17' 9")
External Depth: 3.26m (10' 8")
Internal Width: 5.18m (16' 11")
Internal Depth: 3.01m (9' 10")
Internal Area (m2): 14.76m2
Ridge Height: 2.49m (8' 2")
Internal Eaves (Front): 2.18m (7' 1")
Internal Eaves (Rear): 1.99m (6' 6")
Wall U-Value (W/m2k): 0.21
Roof: Insulated IzoPanel
Roof Thickness: 135mm (100mm Insulated core)
Roof U-Value (W/m2k): 0.21
Overall Wall Thickness: 120mm
External Timber Thickness: 15mm Shiplap Cladding
Framing: 70mm Timber Stud Frame
Insulation Thickness: 25mm
Insulation Material: PIR (Polyisocyanurate)
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 System: 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
Glazing Material: 28mm Double Glazed, Toughened Glass
Timber: Pressure Treated
Guarantee: 10 Years Against Rot and Insect Infestation on Pressure Treated Timber
Approximate 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. (Any other items shown for illustration purposes are not included)
Shipped From UK With FREE DELIVERY* to mainland England & Wales.
We are unable to deliver to Scotland and a number of other postcodes, we apologise for any inconvenience caused. Postcodes affected include TR. TQ6, 7, 8 & 9. EX20, 21, 22, 23, 38, & 39. LD2, 3, 4 & 5. Many SA and PL postcodes.
Installation - We do not offer installation. All our garden buildings have been designed for the DIY market and supplied with full pictorial instructions.
Natural Timber Properties - Despite the care we take in selecting the very best Timber available, it can still be unpredictable as its very nature is to be porous and swell up when it gets wet. Any wooden product will do this throughout its life, but there are a few things you can do to help limit this movement:
Water Repellent Treatment - We would recommend that you use an appropriate water repellent treatment. This helps minimise the amount of moisture that the timber can absorb and thus minimises the risk of any major movement. (Please note: water repellent treatment is not the same as pressure treatment)
Ventilation - Keep your timber building ventilated and to allow any moisture to evaporate. This is especially important if you plan to cover up your walls or floorboards with something (double-check with an expert, that the material is suitable to do so), as moisture can become trapped between layers of non-breathable materials, leading to timber becoming rotten
Regular Seasonal Maintenance - Whether you opt to build your product yourself, don’t be afraid to tighten the odd bolt here and there. Your product is a long term investment, so it’s only right to give it some love and care from time to time. Make sure that it’s properly treated before the rainy months, and that you make adjustments to doors and window frames when needed.
Foundation - We recommend a flat, level concrete base with an allowance of at least 100mm on each side. e.g. A 4m by 3m building would have a base of 4.2m by 3.2m
Pressure Treated Interlocking Logs - Our Titania & Helena office ranges are fully pressure treated. We take the pre-cut lengths of spruce used on the exterior and place them in a large pressure treatment tank, where the timbers are impregnated with a non-toxic preservative. We add a brown colourant during this process, giving the timber a rich brown colour. By pressure treating the timber, it will be protected against rot and insect infestation for up to 10 years.
No Bespoke Sizes - All our products are sold as advertised and we don’t do bespoke sizes. Our cabin models come in different sizes you can choose from. This allows us to ensure consistent quality of our products and precise cuts made by our machines.
Delivery Service - All of our products are delivered using our own fleet of vehicles, not sub-contractors. Our deliveries take place Monday to Friday between the hours of 8:30 am and 7:00 pm. Please find more information on how your delivery will be carried out on our website and in your order confirmation.
Please provide a telephone number to enable us to contact you to arrange a delivery date, as all deliveries must be booked in.