Swallow Mallard 8x11 ThermoWood Greenhouse with Installation

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Did You Know? All of our Swallow Timber Greenhouses Include DELIVERY & INSTALLATION in the price!


The generous gable width of a 8ft wide x 11ft Mallard greenhouse gives you the freedom to enjoy growing so many plants in a stylish greenhouse.

As is usual and unique to Swallow greenhouses, the frame is constructed using ThermoWood® which retains all the marvellous qualities of Scandinavian timber and enhances them during a heat treatment process. The result is a very durable wood that has minimal shrinkage and expansion. Warping therefore is reduced to a minimum and the timber unlikely to rot. 

Inside this impressive frame that is glazed with silicone sealed 3mm toughened glass is an ideal environment, through which air circulates from four automatic roof vents. Guttering is fitted as standard together with two front returned stagings.

There are many other features that make this greenhouse such an attractive proposition, you can even choose between a dwarf wall or boarded base. Colour can also be your preference, with a choice of five finishes available including natural wood.

8x11 Mallard Features:

  • ThermoWood®: Heat treated Scandinavian timber that's rot and warp resistant
  • Guttering and two front returned stagings
  • Glazing bars: 58mm x 34mm finished size
  • All Boards: 12mm finish tongued and grooved
  • Doors: 1 with mortice lock and aluminium handles
  • Glazing: 3mm toughened safety glass, slid into a groove and sealed with quality silicone
  • Joints: All the cut shapes are jointed with a clear plastic H section
  • Roof Vents: 4 large roof vent with automatic opener
  • Finial: A specially turned apex finial for that classic look.
  • Capping: The ridge and top vents are sealed with a specially machined timber capping.
  • Damp Barrier: A 20mm black PVC section is screwed to the bottom
  • Stainless Steel Nails: Used to fix all tongued and grooved boards
  • Delivery and installation included in price

8x11 Mallard Dimensions:

  • Gable Width: 2660mm (8ft 9ins)
  • Length: 3490mm (11ft 5ins)
  • Eaves Height: 1730mm (5ft 8ins)
  • Door Width: 2660mm (8ft 9ins)
  • Door Height: 570mm (1ft 10ins)
  • Porch Width: 2035mm (6ft 8ins) 
  • Porch Length: 730mm (2ft 5ins)

Please Note: Imagery may show greenhouses of a different size and with optional extras that must be purchased separately. A suitable flat, level and sturdy base must be prepared before the delivery / Installation date to ensure a hassle free installation.



Select Your Options

Build Design - Standard or Dwarf Wall Option

  • with Standard Board Base Version

  • with Dwarf Wall Version

Option 1: Would you like your Greenhouse Painted?

  • with Standard ThermoWood® Finish

  • with ThermoWood® Finish in BRACKEN


  • with ThermoWood® Finish in OLIVE


  • with ThermoWood® Finish in EARTH


  • with ThermoWood® Finish in LILY WHITE


Option 2: Would you like to add Extra Staging?

  • with ThermoWood® Extra Staging


Option 3: Would you like to add a High Level Shelf?

  • with ThermoWood® High Shelf


Option 4: Please Choose Your Rainwater Guttering Colour Option

  • with Swallow Hunter Rainwater System in WHITE

  • with Swallow Hunter Rainwater System in BLACK

Option 5: Please choose a Delivery option -

  • including Delivery/Installation within Mainland UK

  • including Delivery/Installation within Scotland (North of Grangemouth)


Additional Accessories for your Greenhouse

  • with Ornate Black Door Handle


Delivery Information


Inclusive delivery and installation is limited to UK Mainland excluding areas 15 miles further North of Glasgow. Areas further than this and Offshore Islands would require a custom quote. Please Contact Us here if this is the case.
A suitable, flat and level base must be prepared prior to the delivery and installation.

Price Promise

If you find any of our products in stock and immediately available, at our competitors we will try out best to match the price. We do not charge extra for delivery or installation, but if you find somewhere cheaper, please Contact Us so that we may try to match the price or beat it.

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£4,309.00 inc. VAT