Alton Evolution Octagonal Cedar Greenhouse
9ft2 wide (2800mm) x 9ft2 long (2800mm)


 £4,958.00   Now £3,728.00 Ends: 30th September 2018
Product id: 7871
  • Western red cedar cladding
  • Western Red Cedar
  • Toughened safety glass (full sheet)
  • Free 10 Year Guarantee
  • 2 x roof vents with Automatic opening
  • 2 x Louvre vents
  • Gutter and a single down pipe including stop end (for greenhouse)
  • High eaves
  • Low level threshold
  • Staging and shelving included
  • Hinged single door
  • Screw in cedar bar capping system
  • Installation available for a fee

£3,728.00

  • Alton Additional Evolution Octagonal Louvre high level

    More information
    £149.00
    Alton Additional Evolution Octagonal Louvre high level

    Replaces a 795x1050 pane of glass in an Alton Evolution Octagonal greenhouse.

  • Alton Bar Capping set (Moss Green) for Evolution Octagonal 99

    More information
    £119.00
    Alton Bar Capping set (Moss Green) for Evolution Octagonal 99

    Replaces the cedar bar capping holding in the glass. Powdercoated aluminium reduces maintenance and extends the life of the building.

  • Alton Evolution louvre opener

    More information
    £46.00
    Alton Evolution louvre opener

    Automatic attachment for a Louvre vent, fits most louvres.  Its fully adjustable to open over a range of temperatures.

    Some drilling is required to fit.

  • Alton Evolution Octagonal 6x9 Double door upgrade

    More information
    £362.00
    Alton Evolution Octagonal 6x9 Double door upgrade

    Upgrade your single door to a double door option.

    The right hand door, looking from the outside, is the slave door - the one that opens day to day.

    The left hand door can be opened by undoing shoot bolts top and bottom.

  • Alton Evolution Octagonal Louvre in cladding

    More information
    £149.00
    Alton Evolution Octagonal Louvre in cladding

    Replaces the lower cladding in an Alton Evolution Octagonal greenhouse.

  • Alton Evolution Octagonal shelf infill for 9ft long

    More information
    £75.00
    Alton Evolution Octagonal shelf infill for 9ft long

    Spans the rear of the greenhouse.


£3,728.00
Alton £3355 with code TEN18
The discount will automatically be applied to your basket

New for 2018, this stylish Octagonal model from Alton brings a touch of modern elegance to your garden, as well as horticultural practicality.

Made from the same warm hued western red cedar as the rest of the Evolution range, with the same rot resistant properties, this spacious 6x9 high eaves model provides the perfect growing environment. With its 2 high-level side louvre vents and 2 automatic roof vents (which open and close with the changing temperature), it provides excellent ventilation, drawing fresh cool air from below, and pushing out stale warm air above.

Alton have made a number of improvements to their Octagonal models. Gone is the old timber staging and shelving, and replaced by sleek aluminium, which is powder-coated in a mellow Moss Green colour, giving your greenhouse real contemporary styling.  Also, powder coated aluminium guttering, in the same Moss Green, has replaced the old PVC.

In keeping with the rest of the Evolution range, the Octagonals now come with an integral, powder coated, metal base plinth, and have the option to upgrade from cedar bar capping to powder coated aluminium, making your greenhouse virtually maintenance-free.

Some things haven't changed however, as the Octagonal models still maintain the same strong cedar frame, lockable hinged door with low-level threshold, and toughened safety glass throughout.

Octagonal greenhouse dimensions diagram
  • A = Base width: 2,800mm (9ft2).
  • B = Length: 2,800mm (9ft2).
  • C = Eaves height: 1,989mm (6ft6).
  • D = Ridge height: 10,000mm (32ft9).
  • E = Door width: 649mm (2ft1).
  • F = Door height: 1,810mm (5ft11).
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File Type: PDF

Alton Evo Octagonal 9x9 Base Plan - Click here to view

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Delivery of this greenhouse to Mainland England and Wales is FREE, parts of Scotland may be subject to a small charge. Delivery costs will be calculated and displayed at checkout before any payment is required You will be contacted with a delivery date when your greenhouse is ready. This greenhouse is delivered straight from the factory on dedicated transport. Please write in the comments box at checkout any dates (holidays etc.) you would like us to avoid. Delivery to Northern Ireland may take longer.

About The Greenhouse People

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