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Swallow 8'-9 x 18'-10 Raven

20% Deposit
Swallow 8'-9 x 18'-10 Raven
Swallow 8'-9 x 18'-10 RavenSwallow 8'-9 x 18'-10 RavenSwallow 8'-9 x 18'-10 Raven
Swallow 8'-9 x 18'-10 RavenSwallow 8'-9 x 18'-10 RavenSwallow 8'-9 x 18'-10 Raven


Please select options if required (more info below) Leave on "Select" if not wanted

Included Staging:  
High Shelf:  
Extra Staging:  
Gutter System:  
Side Vents:  
Ornate Handle:  
4'3 Combination Shed:  
6'4 Combination Shed:  
Combi Shed Windows:  
4ft Benches:  
6ft Benches:  
Sparrow 4'5 x 2'1:  
Wren 4'5 x 3'4:  
Extra Rear Doors:  
  (6 Reviews)

The 8x18 is 9 bays long (away from door). Main photo shows a 8x12 which is 6 bays long.

Payment Options.
1- Choose to pay the full balance with your order via our secure checkout.
2- Pay 20% deposit only to us with the balance payable to Swallow on installation. Choose the "Wooden Deposit" option when you get to the payment options page in the checkout process.  Nothing to pay at this moment.

Swallow 8x18 Raven greenhouses are traditionally built using Thermowood glazing bars of a sturdy 58mm x 32mm thickness. Thermowood is a heat treated timber that is extremely strong and long lasting with an attractive even finish. Some of the features that are included in the price are:-
  • Plenty of roof vents on each model, each vent comes with an automatic opener
  • Full length of staging down one side
  • Long pane toughened glass
  • 20mm PVC damp proof barrier
  • Delivered and installed by Swallow
  • Large Hinged Double Doors 

Swallow greenhouses have a high eaves height for more comfortable working space, are boarded around the bottom and can be purchased with the natural wood finish or you can choose to have your greenhouse painted in a choice of attractive colours. The 8x18 Raven is supplied with six roof vents

Our View
The Swallow 8x18 Raven is a top quality wooden greenhouse...don't confuse them with some of the competition that are made to a price. Excellent features and installed free by Swallow!

Roof Windows:  6 Standard
Autovents:  6 Bayliss
Staging Included:  Down 1 Side
Toughened Glass:  Safety & Looks
Thermowood Frame:  Long Lasting & Attractive
Greenhouse Boarded All Around:  12mm Thick Tongue & Groove
Large Double Hinged Doors:  Inward Opening
Aluminium Door Handles:  Lockable
Glazing Slid Into Groove:  Silicone Sealed
Turned Apex Finial:  Classic Look
Machined Timber Capping:  Ridge & Roof Vents
20mm PVC Damp Barrier:  Keeps Wood Above Standing Water
Delivered & Installed:  Hassle Free
Quality Paint Finishes:  Enhanced looks
10 Year Warranty:  Framework

All Swallow greenhouses are now made from Thermowood.
Heat and steam are used to thermally modify the wood to produce an exceptionally strong and durable wood that is perfect for outdoor use.
This process is achieved using natural methods and is non-toxic and chemical free, with one of the many benefits being improved insulation well suited for greenhouses.
After treatment the wood is a beautiful consistent colour that will last far longer than normal treated timber.


A: 2660mm (8ft 9")

B: 5730mm (18ft 10")

C: 2660mm (8ft 9") 

D: 1730mm (5ft 8")

E: 1980mm (6ft 6")

F: 1200mm (3ft 11") 

 mm exact : inches approx

Painted Finish Options

Below we have examples of the 4 original paint finishes on offer.
Swallow have their own spray booth facility, the advantage of Swallow painting your greenhouse is that the painting is undertaken before glazing which leaves a seamless finish.
The highest quality water borne acrylic protective paint is used, which has a flexible microporous protective film. This means it is resistant to bacterial mould and UV attack.

Olive Green


 Olive green  Swallow green greenhouse


Bracken Green


 bracken green  Barcken green swallow greenhouse


Earth Brown


 Earth brown  swallow earth brown greenhouses


Lily White


 Lily white  lily white swallow greenhouse



Swallow greenhouses are delivered and installed at the same time by Swallow. A firm and level base area will need to be ready such as slabs, concrete, decking, sleepers or similar.

 Nobody delivers faster than South West Greenhouses!

Our goal is that all orders are processed the same day as we take your completed order (or Swallows next working day)
We don't "sit" on them as some suppliers do, this means that you get your greenhouse in the quickest delivery time possible.

Free delivery to the whole of mainland UK as far North as Grangemouth Scotland, contact us for pricing for delivery north of Grangemouth stating greenhouse required and your postcode and we will get you the best possible price!


Expected delivery time for Swallow greenhouses

4-6 Weeks for all buildings



 Scroll down for options information

Thermowood  Olive Green  Bracken Green  Earth Brown  Lily White
Meadow Green Cream Rose Stone Lead Grey

Choose to have your greenhouse in natural finish Thermowood or painted in one of 9 attractive colours (some exclusive to us)

Swallow have their own spray booth facility which enables them to paint their greenhouses to a high quality finish. Painted before glazing and sometimes in component form for a seamless finish.
The paint used is a water borne acrylic which has a flexible microporous protective film, this top quality paint is resistant to bacterial mould and UV attack.
Some painted examples can be found in the "Paintwork Options" tab above

Included Staging
This building comes with a length of staging included, this is supplied as Thermowood as standard with all finishes, at a small extra cost this can be painted to match your frame colour.

Photo to the side shows how the staging and shelf looks in Thermowood against a painted building
High Shelf
Add a High Level Shelf to your greenhouse for extra storage.
Perfect for all those pots and tools you can choose to add one shelf which runs the whole length of your greenhouse or choose two so you can have one each side.

Can be painted to match your chosen frame colour.
Extra Staging
If you need more work space for your potting and planting you can choose to add another full length of staging to add to the one you get as standard.

Can be painted to match your frame.
Gutter System
Don't waste all that water that you can get off your greenhouse roof, add the quality PVC Gutter System to your order.
The gutter is added to both sides of the greenhouse and you can choose to have 2 downpipes (1 on each side) or you can have a joining gutter section across the back going into 1 downpipe.

Available in black or white.

Side Vents
Ventilation is important for every greenhouse to increase airflow and to control the inside temperature.

Choose to add these low level opening side/rear windows. (we will confirm position of windows with you)

Choose painted option with a painted frame.
Ornate Door Handle
An attractive ornate black door handle is available to add to your order.
Combination Shed
Add a practical shed on to the back of your greenhouse, these are of the same quality of your greenhouse with the door on the inside of the greenhouse.
Choose to add a rear door for access to the shed from your garden.
Supplied without a floor as standard you can add an unpainted floor if you wish.
Choose if you want any fixed windows in your shed (we will confirm position with you)

Available in a 4ft3 of 6ft4 extension.

Can be painted to match.

These high quality 2 tier slatted benches are freestanding and can be placed where you wish, these are suitable for inside or outside use.

Available in 4ft or 6ft lengths.

Can be painted to match.


Sparrow & Wren Cold Frames
  Matching cold frames sturdily built with toughened glass hinged roofs.

Sparrow is 4'5 long by 2'1 wide
Wren is 4'5 long by 3'4 wide

Can be painted to match.
Extra Rear Doors
  An extra pair of rear doors can be added to your greenhouse to enable you to have access at both ends.

Choose painted option with a painted greenhouse.
Similar Greenhouses
   Wooden Greenhouses       8ft Wide Greenhouses       Swallow Greenhouses       Swallow Raven greenhouses
Customer Reviews
Average Rating (6 Reviews):  
Write a Review and share your opinions!

Swallow Raven
Wednesday, 19 July 2017  |  Maria

wow fantastic green house. fantastic team who fitter it. 10/10 all round well pleases from maria b,x

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This review has not been appraised.

The wait was worth it......
Thursday, 16 March 2017  |  Mathew

Fantastic build quality, the shed extension is brilliant, and the attention to detail is first class. The thermowood look and feel makes it look more expensive than it is and certainly competes with some RHS 'certified' versions where you will pay 4 x the price! The large building was erected in less than 4 hours and the guys arrived promptly.

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1 of 1 people found this review helpful.

First ever greenhouse
Monday, 26 September 2016  |  Sue

Love it!! Delivery arrived smack on time and had built in 1.5 hours.
My only regret was not ordering a side vent but may go for it at a later date.
Already full of cuttings and seeds

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1 of 1 people found this review helpful.

Swallow Raven Greenhouse
Tuesday, 1 September 2015  |  Susie

Thrilled with my greenhouse. Arrived exactly when stated and erected with the minimum of fuss. Excellent service and very high quality product. Now all I have to do is enjoy using it........

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1 of 1 people found this review helpful.

Happy new greenhouse owner
Wednesday, 10 June 2015  |  Andrew

Very impressed with the greenhouse and service provided by Swallow. They arrived right on time and it was built within a couple of hours and looks great. Absolutely the right choice!

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1 of 1 people found this review helpful.

A brilliant greenhouse!
Tuesday, 6 January 2015  |  Bebe

4 weeks in and I absolutely love this greenhouse. It feels really solid and spacious. We used new sleepers as a base and this has given us additional height.
The greenhouse arrived ahead of schedule and on the day the 2 guys arrived, with the greenhouse pre-glazed, promptly at 8am as promised and they were brilliant. By afternoon I had started moving my plants in. Thank you

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1 of 1 people found this review helpful.