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Swallow Lark 4x4 Wooden Greenhouse - £1518

Swallow Lark 4x4 Wooden Greenhouse
FREE Installation
Click images to enlarge - Pictures are for illustration purposes
Quick Code: P172525
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.

Greenhouse Dimensions

Greenhouse Size Diagram
  • A: 1400mm (4ft 8")
  • B: 1290mm (4ft 3")
  • C: 2175mm (7ft 1")
  • D: 1730mm (5ft 8")
  • E: 574mm (1ft 10")
  • F: 1760mm (5ft 9")
  • Minimum size for your Greenhouse base 1400mm x 1290mm
  • 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.

  • £1518 inc VAT
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    for Options
  • Scroll Down for Options
  • Pay only 20% Deposit
  • £304
  • FREE Installation!!
  • Delivery Details

  • FREE Delivery

    Within 30 Weeks.

    Some Scottish postal areas attract an additional delivery charge.

    Updated: 21/9

    Read our COVID-19 Statement

Standard Features Include:

  • 1400mm (4ft 8") Wide Wooden Greenhouse - Practical size.
  • ThermoWood® Construction - Heat treated high performance timber.
  • Bottom Boards 12mm - Tongue + Grooved with stainless steel nails.
  • Stainless Steel Nails - Will not rust.
  • Glazing Grooves to hold glazing - Solid and Silicone Sealed.
  • 3mm Toughened Glazing - Safe, Strong and Family Friendly.
  • 1 Opening Roof Vent - For Ventilation.
  • 1 Bayliss XL Autovent - Automatically opens your roof vent.
  • Full length of Slatted Staging to one side - 520mm wide, 745mm high.
  • Mortice lock - Extra Security.
  • 25mm Black PVC Damp Barrier - Screwed to bottom for rising damp protection.
  • 10 Year Warranty - on timber frame and base.
  • Installation Included in Price - Just order and everything is done for you !

The New 4ft x 4ft Swallow Lark is the ideal size for a small space in your garden or patio. It’s a practical size, looks superb and is installed for FREE!

3mm Toughened Safety 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 doors with mortise locks are also standard. Full Thermowood construction encures no expansion or contraction of the wood with an expected life of 50 years!!!

Each roof vent is supplied with a Bayliss XL autovent to automatically open the roof vent 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 Lark is the finest 4ft wide wooden greenhouse available today and when you consider it has a 10 YEAR WARRANTY and free installation it’s not hard to understand why we rate Swallow wooden greenhouses so very highly.

Made in the UK

This greenhouse is made in the UK

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

Select your size

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.

Premium options

  • Premium Aluminium Cresting

    Premium Aluminium Cresting

    Traditional Premium Aluminium Cresting and Finials in Black.


Additional Staging and Shelving

  • High Level Shelf

    High Level Shelf

    250mm wide high level shelf for extra storage of plants, seeds and tools.



  • Extra Side of Staging

    Extra Side of Staging

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


Rainwater Systems

  • 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.


  • 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.


Combination Shed

  •  4ft Shed Extension with Floor SAVE £77 11%OFF

    4ft Shed Extension with Floor

    Add this useful 4ft combination shed to the back of your greenhouse for extra storage. Complete with floor


  • Combination Shed Extension 4ft x 6ft with Floor

    Combination Shed Extension 4ft x 6ft with Floor

    Add this useful 4ft x 6ft combination shed to the back of your greenhouse for extra storage space with Floor


  • Fixed Window

    Fixed Window

    Let some light into your shed



  • Opening Window

    Opening Window

    Add circulation as well as light to your shed.



More Useful Extras

  • Side Vent

    Side Vent

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



  • Swallow Sparrow Cold Frame

    Swallow Sparrow Cold Frame

    Add a Sparrow Coldframe to give even more room for seedlings and plants. Dimensions: 4ft 5" X 3ft 4"



  • Swallow Wren Frame

    Swallow Wren Frame

    4ft 5" x 2ft 1" Cold Frame with toughened Safety Glass.



  • 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



  • Additional Greenhouse Door

    Additional Greenhouse Door

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


  • External Shed Door (With Shed Extension Only)

    External Shed Door (With Shed Extension Only)

    Add a door at the rear of your shed extension.



  • I require delivery north of Grangemouth

    I require delivery north of Grangemouth

    Orders north of Grangemouth incur an additional cost


  • I require delivery south of Grangemouth

    I require delivery south of Grangemouth

    Orders south of Grangemouth incur no additional cost


Swallow Lark 4x4 Wooden Greenhouse

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