Swallow Raven 18x8 ThermoWood Greenhouse with Installation

EAN: 5060290210157

Write the first review


ThermoWood® is a modern construction material that is used only in Swallow greenhouses. Its fantastic qualities are put to good use when you consider an 18ft x 8ft Raven Greenhouse.

This is an attractive traditionally styled structure that is highly warp and rot resistant because the timber has been heat treated to remove moisture and resin, it therefore doesn't expand or shrink and no preservatives are required.

Double doors mean getting into the greenhouse is easy even with large garden equipment or a wheelbarrow. Once inside you'll realise that this is a very productive growing area with six roof vents that automatically open and light flowing through toughened glass that has been silicone sealed.   

Staging is already in place along one side to assist sowing seed and potting, and you can choose to have a high shelf as well. Other options include a rainwater collection system for re-cycling and a Combination Shed that would offer storage and your working space.    

18x8 Raven Greenhouse Features:

  • ThermoWood®: Heat treated Scandinavian timber that's rot and warp resistant
  • Glazing bars: 58mm x 34mm finished size
  • Bottom Tongue & Groove: 12mm boards, 390mm long
  • Doors: Double 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: 6 large roof vents with automatic openers
  • Staging: Full length on one side with centre support.
  • 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 tongue and grooved boards
  • Delivery and installation included in price

18x8 Raven Dimensions:

  • Gable width: 2660mm (8ft 9ins) 
  • Length: 5730mm (18ft 10ins)
  • Eaves height: 1730mm (5ft 8ins) 
  • Ridge height: 2660mm (8ft 9ins)
  • Door width: 1200mm (3ft 11ins)
  • Door height: 1980mm (6ft 6ins)

Note: Larger 20ft x 8ft and smaller 16ft x 8ft versions of this greenhouse is available.

Optional Extras for your Swallow Greenhouse

Staging along one side is included as standard in your Swallow GB Greenhouse, however, an additional High Level Shelf and Extra Staging on the end to make an L shape is an option. The Hunter Gutter and Downpipe Kit allows you to collect and re-use rainwater - the best water for all plants - this is available as an optional extra below.

Please Note: Imagery may show Kingfisher 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

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: Would you like to add a Rainwater System?

  • 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 Info


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.


There are currently no reviews for this product. Please help us and others by writing a review.

Review This Product

Questions and Answers

Have a question for this product? Go ahead and ask us! We try to reply within a few hours but it may take longer on some questions.

Ask us a Question