Dunster House Ltd.
Est. 1994
28mm Double Glazing
We don't compromise on quality just because it is a garden building. Our garden offices have domestic style uPVC windows and doors, making your garden office secure and highly insulated. The 28mm sealed double glazing provides improved heat and sound insulation.
Easy to Build Panel System
Using a technique unique to Dunster House, we've been able to create panels that simply slot together, ensuring the rigidity and strength of this office surpasses many alternatives and is quick to build.
9 Point Locking System
The contemporary garden offices feature our impressive 9 point door locking system that ensures maximum protection. Featuring three roller cams and three hook bolts, two dead bolts and a latch ensure all the personal belongings are kept safe and secure.
Pressure Treated Bearers
By pressure treating our floor bearers we protect the lowest part of the building from rot and insect infestation. This forces the treatment deep into the timber using a large pressure treatment tank. This costly but effective process ensures there is no need to re-treat the timber in years
IzoPanel Roof
Our Garden Offices feature a very advanced roofing system manufactured by IzoPanel. They use a stiff polyurethane foam core (a material that provides a very low thermal conductivity rating) joined together tightly with overlapping cladding in a trapezoidal profile, which makes strong joints that prevent water ingress. Altogether the roof is waterproof, has great thermal characteristics and is uniquely strong.
Wide-Opening French Doors
The wide-opening French doors on our Titania Garden Office offer a large walkthrough width of 1.34m, which is handy for bringing in bulky items or to really open up the office to the outdoors, making the most of natural light and fresh air! The doors (and windows) also feature trickle vents to avoid moisture build-up when closed.
15mm Shiplap Cladding
Shiplap cladding is named after the old boatmaking technique where the boards overlap. This means that the natural timber can expand and contract with the seasons and not create gaps. The curve or channel of shiplap cladding enables water to run off easily.
Please Note:

All sizes are approximate

External Width: 7.60m (24' 11")
External Depth: 3.30m (10' 9")
Internal Width: 7.36m (24' 1")
Internal Depth: 2.98m (9' 9")
Internal Area (m2): 21.92m2
Ridge Height: 2.49m (8' 2")
Internal Eaves (Front): 2.18m (7' 1")
Internal Eaves (Rear): 1.99m (6' 6")
Roof: Insulated IzoPanel
Roof Thickness: 135mm
Roof U-Value (W/m2k): 0.21
Overall Wall Thickness: 120mm
External Timber Thickness: 15mm Tongue and Groove
Framing: 70mm
Insulation Thickness: 25mm
Insulation Material:


Internal Finish:

10mm Plasterboard

Floor: 40mm insulated sanwich panel
Floor Bearers:

Pressure Treated

Floor Bearers: 35m (114' 9")
Door Style:

uPVC Patio Door

Door Material:

Steel reinforced 5 Chambered uPVC profile

Door Locking System:

Multi point locking system with 6 pin euro cylinder lock barrel

Door Walkthrough Height: 1.84m (6' 0")
Door Walkthrough Width: 1.34m (4' 4")
Window Locking System:

Multi Point with Mushroom Headed Espagnolettes

Glazing Material:

28mm Double Glazed, Toughened Glass


Pressure Treated

Approx. 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 wood is planned and pre-cut (with exception of trims), for quick and easy construction.

Please Note:

All fixings needed for assembly are supplied