Falcon 13' 1 x 18' 10 Thermowood Greenhouse

Falcon 13' 1 x 18' 10 Thermowood Greenhouse

Availability: In stock


Delivery & Installation typically within 4-6 weeks


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

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Swallow FALCON 13' 1 x 18' 10 Thermowood Wooden Greenhouse

The Falcon is our 3990mm (13’1) wide double door model is available in a multiple of lengths. This spacious greenhouse offers a multitude of opportunities where plants can be stationed not only down the side of the greenhouse but also in the centre. The double doors allow access for wheelbarrows or carrying large trays.

Greenhouse Specifications

  • The redwood pine glazing bars are 58mm x 32mm finished size
  • All boards are 12mm finish tongued and grooved and fixed with stainless steel nails
  • All the timber is thermally modified.
  • The inward opening door has a mortise lock and aluminium handles
  • Glazing is toughened safety glass
  • All the glazing is slid into a groove and sealed with quality silicone
  • All the cut shapes are jointed with a clear plastic H section
  • Each roof vent has an Automatic opener
  • Full length staging down one side with centre support (width 520mm, height 745mm)
  • There is a specially turned apex finial for that classic look
  • The ridge and top vents are sealed with a specially machined timber capping
  • A 20mm black PVC section is screwed to the bottom, called the damp barrier
Availabile Sizes
Falcon 3990 x 384013'1 x 12'7
Falcon 3990 x 576013'1 x18'10
Falcon 3990 x 768013'1 x 25'2
Falcon 3990 x 960013'1 x 31'6
Falcon 3990 x 1152013'1 x 37'9


LunaThermo-D, where D stands for durability, comes in a stylish dark brown. The wood's dimensional stability and resistance to decay are significantly improved through the thermal modification process. LunaThermo-D is thermally modified using higher temperatures (212ºC ±3, decay resistance class 2) and products are suitable for both outdoor and indoor use.
The Thermowood® process
Even the ancient Vikings knew that when building defensive fencing for fortifications, poles made from wood with a burnt surface were more durable than poles which had not been treated in any way. Studies on the possible benefits of the thermal modification of wood began as early as the 1930s and 1940s in Europe and the USA, but the manufacturing process never reached an industrial scale. Decades later, VTT (Technical Research Institute of Finland) became interested in the idea and as a result, the ThermoWood® process was patented and the brand was launched in Finland at the end of the 1990s.
The Lunawood® thermal modification process uses only heat (ranging from 190–212ºC) and steam. Lunawood® end products are completely natural and free from chemical additives. The ThermoWood® process respects the natural proper ties of wood. The patented production process is based on the gradual thermal modification of wood, wherein the chemical and physical properties of the wood undergo permanent change. ThermoWood® is a registered trademark and may only be used bymember companies of the International ThermoWood As sociation. Lunawood is one of the association'sfounding members. The quality of ThermoWood® production is monitored by an independent, external party.


LunaThermo-D belonging to durability class 2 has a projected service life of 30+ years when resistance to decay is considered (BRE). This applies to exterior cladding and decking applications. However the decking material is subject to surface wear and loading which decreases the reasonable expected service life to 15–20 years.



Lunawood® Thermowood is a beautiful wood material produced using natural methods. Only heat and steam are used in the manufacturing process and no chemicals are added whatsoever.

During the process, steam acts as a protective gas and prevents the wood from splitting and becoming damaged during treatment. 



Tests have shown that the thermal conductivity of thermowood® is reduced by around 20-25% compared with untreated coniferous wood. As a result, Lunawood® is an excellent choice of material for exterior doors, cladding, windows and saunas, to name just a few applications.



Resin is removed from the wood during the thermal modification process. As a result, the wood does not secrete resin even in high temperatures.



During the production process, organic compounds and emissions which deteriorate the quality of indoor air are removed from the wood. According to research, there are twenty times fewer compounds and emissions in thermowood than in unprocessed pine.


Lunawood® thermowood should be surface treated before installation or immediately after installation if the beautiful brown colour to be retained. The surface colour can be retained by treating the boards with tinted/pigmented wood oil, wax, wood-protecting stain, varnish or paint, which contains a UV filter. The surface treatment can be applied either before or immediately after installation using only a thin coat. Any excess should be wiped off. However one should always follow the manufacturer's recommended guidelines.

The surface treatment should be renewed as necessary. The need for re-treating varies depending on the climate, amount of usage and the degree of exposure to UV light. With painted untreated wood the typical interval between maintenance is approximately 5 years. With Lunawood® thermowood the maintenance interval in painting can be greatly extended, possibly three times longer than usual. By using a more stable material considerable costs can be saved in cladding and decking, taking into consideration the entire lifespan of the product.


We recommend using some form of surface treatment to protect Lunawood® from air born impurities. However unfinished thermowood may be used. The brown colour of the surface will simply fade and turn to grey over time due to the influence of UV.

The weathered appearance of the wood is elegant and the beneficial properties remain intact. The surface of the wood merely creates a protective layer for itself. The original brown colour can be restored, using an effective washing solution after which a surface treatment can be applied.

Additional Information

Additional Information

EAN CodeNo
Deliver Time (working Days)No
Guarantee (years)No

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Dimensions13' Falcon Range
Number of PackagesNo
Roof Size (front x Side) - cmNo
Wall Height (cm)Various
Overall Height Wall Height (cm)Various
Panel Thickness (mm)No
Main Door Opening Size (height x width) Wall Height (cm)Various
2nd Door Opening Size (height x width) Main Door Opening Size (height x width) Wall Height (cm)N/A
Base Size (front x Side) - cmVarious
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