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FREE Delivery, FREE Installation. Pay only a 20% Deposit Today and the balance after Installation!

Swallow Starling 6x20 Low Height Lean to Greenhouse - £3461

Swallow Starling 6x20 Low Height Lean to Greenhouse
FREE Installation
Click images to enlarge - Pictures are for illustration purposes
Quick Code: P172629
Pay Only 20% Today!!

Pay only 20% deposit today on Swallow greenhouses and pay the remainder after installation.

Installation Included!!*

All Swallow Wooden Buildings are installed for FREE.
*Installation does not include any ground or remedial work.

Lean-to dimensions

Greenhouse Size Diagram
  • A: 2010mm (6ft 7")
  • B: 6360mm (20ft 10")
  • C: 2440mm (8ft)
  • D: 1730mm (5ft 8")
  • E: 570mm (1ft 10")
  • F: 1760mm (5ft 9")
  • Minimum size for your Lean-to base: 2010mm x 6360mm
  • Perimeter Base: A perimeter base made to the above A+B dimensions from 50mm thick paving slabs.
  • Solid Paving Slab Base: Complete area covering no less than the A+B dimensions from 50mm thick paving slabs.
  • Concrete Base: Concrete pad base no less than 100mm thick made to no less than the above A+B dimensions.
  • Access Requirements: Minimum access height required for 4ft,5ft and 6ft wide greenhouses is 2.1m/6ft 10". The minimum access height for 8ft wide greenhouses is 3m/9ft 10". No right angle turns between access point and installation site.


Thermowood Greenhouse

ThermoWood® is a special thermally modified timber developed in Finland. The timber is heated treated up to 215 °C to remove all excess moisture. This wood is well suited for outdoor applications where demanding weather conditions are the norm. The key performance features of ThermoWood® over normal timber are:

Improved durability against decay
Resin removed
Improved dimensional stability
Consistent colouring throughout
Reduced equilibrium moisture content

The timber is used extensively throughout Scandinavia for all sorts of interior and exterior construction, cladding and decoration due to it’s good looks and superb resilience to harsh weather.

Autovents as Standard

Greenhouse Roof Auto Vents

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 Greenhouse Staging

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.

Damp Barrier

Swallow Greenhouse Damp Barrier

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

  • £3461 inc VAT
  • Scroll Down
    for Options
  • Scroll Down for Options
  • Pay only 20% Deposit
  • £692
  • FREE Installation!!
  • FREE Delivery

    within 8 Weeks due to COVID-19

    North of Glasgow scroll down for delivery option. Offshore deliveries please call.

    Read our COVID-19 Statement

Standard Features Include:

  • 2010mm (6ft 7") Gable Width
  • 2440mm (8ft) Ridge Height
  • ThermoWood High Performance Treated Timber Frame
  • ThermoWood 12mm Bottom Boards
  • Stainless Steel Fittings Throughout
  • 4mm Toughened Safety Glass
  • 4x Automatic Roof Vent
  • Inward Opening Door with Mortice Lock
  • Full Length of Staging at Front - 520mm wide, 745mm high
  • 20mm Black PVC Damp Barrier at Base
  • 10 Year Warranty
  • Installation Included in Price

NEW PRODUCT – The Swallow Starling 6x20 Low Height Lean-to Greenhouse features the usual market leading, high quality British craftsmanship from Swallow GB Ltd. Just order your Swallow Greenhouse with a 20% deposit and we do the rest, including expertly installing your new greenhouse for you!

LOW RIDGE HEIGHT – The Swallow Starling is only 8ft high at the ridge, making it perfect for placing against your bungalow, garage, garden wall or outbuilding.

ONLY QUALITY MATERIALS – Swallow only uses the very best materials to manufacture their greenhouses. Stainless steel nails, screws and door handles are standard, giving long life and smart looks.

ThermoWood Timber – Swallow Greenhouses are built from super weather resistant ThermoWood. This timber is imported from Finland, where it is used for many outdoor applications, including the cladding of buildings all over Scandinavia. Needless to say, this timber is more than capable of coping with our UK weather. The timber is also treated additionally to give it an even longer period before you need to treat it again.

FREE GREENHOUSE INSTALLATION – All of our Swallow Greenhouses are inclusive of installation by our expert fitting teams. Your greenhouse will be made to order, then delivered and installed in your garden. Please note: We require a hard, level surface of slabs or concrete to install onto. Please see advice for your base below our greenhouse dimensions diagram on the left of this page.

Options: Click options to add them to your order then click "Add to Basket"

Select your size

Dwarf Wall Option

  • Dwarf Wall Version

    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.

    + £0

Painted Finish

The paint is applied in Swallow’s specialist spray booth with an opaque protective top coat with a flexible microporous film. This paint finish is resistant to bacterial mold and UV sun damage. Custom colours are available for an additional cost and will be colour matched to your choice using Swallow’s in-house specialist paint.

Useful Extras

  • High Level Shelf

    High Level Shelf

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

    + £212.00

  • Extra Side of Staging

    Extra Side of Staging

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

    + £421.00


  • Black Rainwater System

    Black Rainwater System

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

    + £154.00

  • White Rainwater System

    White Rainwater System

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

    + £154.00

More Useful Extras

  • Bench with Shelf

    Bench with Shelf

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


  • Sparrow Cold Frame

    Sparrow Cold Frame

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



  • Dwarf Wall Version

    Dwarf Wall Version

    You can have this greenhouse built on to a "dwarf wall". Rather than having a boarded base we can manufacture the greenhouse so that it will sit upon a brick wall. Wall height needs to be 607mm high. Simply order your greenhouse with this option applied and we'll email you a wall plan to give to your builder to construct your wall. When your new greenhouse is delivered it will be installed on to the wall you've had built.


  • Additional Greenhouse Door

    Additional Greenhouse Door

    Add a door to the rear of your greenhouse for access back and front.


Position of Door

  • I would like the door on the left

    I would like the door on the left


  • I would like the door on the right

    I would like the door on the right



  • I require delivery north of Grangemouth

    I require delivery north of Grangemouth

    Orders north of Grangemouth incur an additional cost of £295


Swallow Starling 6x20 Low Height Lean to Greenhouse

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