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Swallow Raven 8x18 Wooden Greenhouse

Swallow Raven 8x18 Wooden Greenhouse
Delivery 8-12 weeks ⛟
Free Installation
 Click to enlarge - For illustration purposes.
Swallow Raven 8x6 Wooden Greenhouse Bracken
Swallow Raven 8x10 Painted in Black
Swallow Raven 8x10 Wooden Greenhouse White
Swallow Raven 8x8 Wooden Greenhouse in Midnight Paint
Swallow Raven 8x10 Wooden Greenhouse in Thermowood
Swallow Raven 8x10 Wooden Greenhouse Unfinished Thermowood
Swallow Raven 8x10 Thermowood Greenhouse
8x12 Swallow Raven Thermowood Greenhouse
8x12 Swallow Raven Greenhouse Thermowood with extra doors
8x12 Swallow Raven Thermowood Greenhouse
Swallow Raven 8x16 Greenhouse in Thermowood
Swallow Raven 8x8 Greenhouse with 4ft Shed Combination in Thermowood
Swallow Raven 8x14 Wooden Greenhouse Oiled Finish Old Doors
Swallow Raven 8x10 Wooden Greenhouse Oiled
Swallow Raven 8x10 Wooden Greenhouse Oiled Finish
Swallow Raven 8x10 Wooden Greenhouse with Oiled Finish
Swallow Raven 8x14 Wooden Greenhouse Oiled
Greenhouse Size Diagram

Quick Code: P9012

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  • 8ft 8" wide x 18ft 9" deep
  • 8ft 8" Ridge Height
  • Includes Installation
  • 3mm Toughened Glazing
  • Redwood Pine Thermowood
  • Heated Treated for Superior Resistance to Moisture and Warping
  • 20mm PVC Damp Proof Barrier on the Base
  • Stainless Steel Nails Throughout
  • Double Hinged Doors with Mortice Lock
  • 6 x Automatic Roof Vents
  • Full Length of Staging Included
  • 12-year Warranty
Greenhouse Size Diagram

Greenhouse Dimensions

A: Greenhouse width

2660mm (8′ 8″)

B: Greenhouse depth

5730mm (18′ 9″)

C: Ridge height

2660mm (8′ 8″)

D: Eaves height

1730mm (5′ 8″)

E & F: Door Size

1200mm (3′ 11″) x 1940mm (6′ 4″) (aperture)

Minimum Base Size

2660mm (8′ 8″) x 5730mm (18′ 9″)

Customise your Greenhouse

More Sizes:

Painted Finish

Natural
£102 off
Oiled + £921
£202 off
Lily White + £1,827
£202 off
Bracken + £1,827
£202 off
Olive + £1,827
£202 off
Railings + £1,827
£202 off
Black + £1,827
£202 off
Oxford Stone + £1,827
£202 off
Vert de Terre + £1,827
£202 off
Purbeck Stone + £1,827
£202 off
Moles Breath + £1,827
£202 off
Lulworth Blue + £1,827

Add Premium options?

£60 off
Premium Cresting
+ £540

Finish of the styling of your Swallow greenhouse with the traditional premium aluminium cresting and finials.

£3 off
Black Ornate Door Handle
+ £30

Add a black wrought iron ornate door handle. Price is for one handle per door

Qty 1

Add Additional Staging and Shelving?

£25 off
High Level Shelf Oiled Finish
+ £232

Add a 250mm wide high level shelf for extra storage of plants, seeds and tools etc

Qty 1
£51 off
Extra Side of Staging Oiled Finish
+ £462

Add another side of staging to the other side of your greenhouse.

Add Rainwater Systems?

£42 off
Black Rainwater System
+ £383

Add a Black Rainwater System to collect and reuse all of that lovely rainwater. Rainwater is after all the best water for your plants.

Add Dwarf Wall Option?

Dwarf Wall Version
+ £

Order this Greenhouse customised to sit on a brick dwarf wall. Select this option and we'll send you a wall plan to give to your brick layer to complete your wall. We'll then install a version of this greenhouse with a window sill straight onto the wall.

Add More Useful Extras?

£14 off
Side Vent
+ £135

This side vent opening window will give your greenhouse good ventilation by letting cool air flow in to regulate the temperature and humidity inside, without having to leave the door open.

Qty 1
£16 off
Painted Side Vent
+ £152

Give your greenhouse extra ventilation by letting cool air flow in to regulate the temperature and humidity inside.

Qty 1
£68 off
Additional Double Greenhouse Door
+ £612

Add an additional double door to the rear of your greenhouse for access back and front.

£77 off
Additional Double Greenhouse Door Painted Finish
+ £695

Add an additional double door to the rear of your greenhouse for access back and front.

£46 off
Swallow Wren Cold Frame Oiled Finish
+ £422

Add a Wren Coldframe to give even more room for seedlings and plants. Dimensions: 2ft 1” X 4ft 5”

Qty 1
£55 off
Swallow Sparrow Frame Oiled Finish
+ £495

4ft x 3ft Cold Frame with toughened Safety Glass.

Qty 1
£35 off
Bench with Shelf Oiled Finish
+ £324

Add a useful work bench with lower shelf that you can move around the greenhouse to suit you. Dimensions: 1200mm x 540mm

Qty 1
£40 off
External Shed Door (With Shed Extension Only)
+ £368

Add a door at the rear of your shed extension.

Combination Shed

£145 off
Combination Shed Extension 8ft x 4ft
+ £1,310

Add this useful 8ft x 4ft combination shed to the back of your greenhouse for extra storage. Comes with Floor and 2 Side Shelves

£186 off
Combination Shed Extension 8ft x 6ft
+ £1,681

Add this useful 8ft x 6ft combination shed to the back of your greenhouse for extra storage space. Comes with Floor and 2 Side Shelves

£227 off
Combination Shed Extension 8ft x 8ft
+ £2,050

Add this useful 8ft x 8ft combination shed to the back of your greenhouse for extra storage. Comes with Floor and 2 Side Shelves

£266 off
Combination Shed Extension 8ft x 10ft
+ £2,395

Add this useful 8ft x 10ft combination shed to the back of your greenhouse for extra storage space. Comes with Floor and 2 Side Shelves

Combination Shed

£181 off
Painted Combination Shed Extension 8ft x 4ft
+ £1,638

Add this useful 8ft x 4ft combination shed to the back of your greenhouse for extra storage.

£233 off
Painted Combination Shed Extension 8ft x 6ft
+ £2,100

Add this useful 8ft x 6ft combination shed to the back of your greenhouse for extra storage.

£284 off
Painted Combination Shed Extension 8ft x 8ft
+ £2,562

Add this useful 8ft x 8ft combination shed to the back of your greenhouse for extra storage space.

£335 off
Painted Combination Shed Extension 8ft x 10ft
+ £3,023

Add this useful 8ft x 10ft combination shed to the back of your greenhouse for extra storage space.

The 8ft x 18ft Swallow Raven is a large greenhouse ideal for growing a family sized crop of vegetables. It`s practical double door design gives easy access and it`s installed for FREE !

3mm Toughened glass is standard on all Swallow wooden Greenhouses and is held in special grooves within the frame and then sealed in place with quality silicone. Inward opening double doors with mortise locks are also standard.

Each roof vent is supplied with Bayliss XL autovents to automatically open the roof vents when you`re not around to stop over heating. You also get a full length of slatted staging down one side of the greenhouse for working on and storing your plants.

The Swallow Raven is the finest 8ft wide wooden greenhouse available today and when you consider it has a 12 Year Warranty and free installation, it`s not hard to understand why we rate Swallow wooden greenhouses so very highly.

Thermowood Greenhouse
Why is ThermoWood the Best?

ThermoWood is a thermally modified timber known for its durability and stability in harsh weather.

Oiled Panel
Oiled Finish

Oiling Wood enhances its natural beauty and prolongs its lifespan.

Greenhouse Roof Auto Vents
Autovents as Standard

Swallow use high quality Bayliss XL Automatic roof vent openers as standard on every roof vent. Even when you're not around your greenhouse will be well ventilated.

Swallow Staging Included
Staging Included

Swallow include a length of slatted staging with all greenhouses that is 520mm wide and 745mm high.

Installation Included

Swallow Greenhouses are delivered and installed countrywide for free. You simply order your new greenhouse and it will be delivered and erected in your garden by a Swallow fitting team.

Swallow Greenhouse Damp Barrier
Damp Barrier

20mm black PVC section screwed to the bottom of the greenhouse stops damp rising into the timber.

Swallow Products
Swallow Products

Swallow GB Ltd prides itself on its attention to detail, offering products that are not only functional but also enhance the beauty of any garden. Their greenhouses are built to last, with features like toughened safety glass and automated ventilation systems, ensuring an optimal growing environment..

Swallow 12 Year Warranty
12 Year Warranty

Swallow products come with a 12 year warranty that covers the Timber for Rot, Decay and Insect Infestation. Buildings must be re-treated inside and outside annually with a high-quality wood preserver according to the maintenance advice

Frequently Asked Questions

Overall product rating out of 5: 4.93
Based on 29 reviews
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Review Image - 6x8 Swallow Kingfisher Wooden Greenhouse
Anonymous
Review Image - 6x6 Swallow Kingfisher Wooden Greenhouse
Mr J
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Verified Customer
Paul m
Sale, United Kingdom
Swallow Jay 6x6 Wooden Potting Shed
Excellent and solidly made small greenhouse/shed. Enough room in my back garden for it and surprisingly spacious inside. Love the automatic roof vent.
2 people found this review helpful.
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Verified Customer
Timothy B
6x8 Swallow Kingfisher Wooden Greenhouse
High quality product
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Verified Customer
Mark J
Swallow Jay 6x6 Wooden Potting Shed
After looking at a few on line we were not sure as the potting shed we liked was a little more expensive than others. Decided to go with it and have to say from start to finish the customer service was excellent. When the potting shed arrived it was assembled and advice given . The quality is second to none and so glad we went for this product
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