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Dunster House Ltd.
Established 1994
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Our Timber Windows and Doors

Our Timber Windows and Doors


key locking handles

multipoint locking system friction hinge

18mm bevelled panels on doors

gasket seals on windows and doors top hung window sashes 24mm double glazing engineered sashes to reduce twisting and warping



  1. Why us?
  2. Doors on our Garden Buildings
  3. Windows on our Garden Buildings


What to look for...
What do most people want when they buy windows and doors? We'd suggest it’s always a mixture of fashion and function - What they look like and how secure and reliable they are.


Experts in Manufacturing & Design
As Dunster House started life originally as a specialist uPVC manufacturer – many years ago – we like to think we know a thing or two about making both windows and doors. Put that together with our specialist skills in designing and making log cabins and they are the perfect partnership.


Getting the best for less
We believe our Deluxe range is simply the best on the market – and to prove it, we use Deluxe windows and doors as standard on most of our cabins at no extra cost (not available on 19mm or Core cabins).


Go compare
We are proud of the time effort we put into our unique designs.

With a little research we think you will agree ours are the standards that others need to measure up to:

  • 24mm glass Double Glazing* - thicker, for greater thermal efficiency
  • Manufactured to European Standard EN1279 - to prevent condensation between panes
  • Toughened glass - for increased security
  • Weatherproof gasket seals - to keep out the wind and rain
  • Part-laminated timber to reduce twisting and warping improving strength and stability


We use 4mm toughened glass in our windows and doors, for increased security and resilience. It's better than 3mm hortiultural glass which is commonly found in garden buildings, as it's much harder to break, as well as being much more scratch resistant than any of the plastic alternatives such as Styrene, Perspex or Acrylic. 


Doors with:


  • 6 pin Euro Cylinder lock - the same as a modern domestic door

  • Multi-Point locking (on the lead door) with 4 locking points(a locking catch, a hook bolt and two opposing cams) – to prevent the door being lifted out of the locked position

  • Heavy Duty hinges – to stand up to extensive wear & tear

  • Low threshold doors - so you are less likely to trip

Our doors use four different locking points to give you maximum security, including a locking catch, hook bolt and two opposing cams. The opposing cams move in opposite directions, locking the lead door to the secondary door, preventing the door from being lifted out of the locked position, whilst the hook bolt holds the two doors together in the other direction preventing them from being pried apart. This is combined with a 6pin Euro cylinder, the same type of lock barrel you would find on a modern domestic door, and just what most insurance companies ask for.



Windows with:


  • Multi-Point locking with espagnolette locks - harder to force open than other roller cam systems

  • Anti-Jemmy riser blocks – prevents being forced open by pushing the sash sideways

  • Outward opening windows - to accommodate any curtains and blinds

  • Domestic friction stays – so they open right up and hold in place

Our Windows also feature a multi point locking system, with mushroom headed espagnolette locks. Once the espagnolette locks engage with the keeps it makes it harder for the windows to be forced open as they hook underneath the edge of the keeps. This is an advantage over the simple roller cam system that can be found on some other garden buildings windows, and serves a similar purpose to the hookbolt we feature on our door locks. The windows also have anti-jemmy riser blocks fitted, these will prevent the windows from being forced open by somebody simply pushing the sash sideways and disengaging the locks, similar to the function of the opposing cams on the door lock.


*where specified

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