Alton Evolution Fusion 10 - Potting Shed

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Alton Evolution Fusion 10 - Potting Shed
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Pictures 1 and 2 show the standard 10'10"x10'7" potting shed. Pictures 3, 4, 5 and 6 show internal views of the shed workbench, high level windows and the greenhouse.


Width overall 10'10". Lengths from 6'6" to 12'8". This combined shed and greenhouse makes a superb potting shed. The greenhouse is 4' wide and the shed is 6' wide. These modern hybrid potting sheds cleverly combine the warmth and natural beauty of cedar with the performance and durability of profiled aluminium. The greenhouse base plinth, threshold and door pelmet are aluminium with a choice of cedar or aluminium external capping. Luxury features include high level windows between the shed and the greenhouse and toughened safety glass as standard. The shed includes a fully framed and braced joinery door with mortice lock and at least 1 opening window. The greenhouse includes a sliding door with no step doorway, at least 1 louvred vent and at least 1 automatically opening roof vent. The aluminium components are powder coated grey to compliment the natural colour of the cedar when new and as it fades. The cedar is finished with a colourless preservative to enhance its natural beauty. Staging, high level shelving and workbenches are available for potting and storage. Detailed instructions are supplied for DIY self assembly. We offer fitting as a low cost option in many areas.

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This greenhouse is currently available with our popular two tier modular freestanding metal or wooden slatted staging. Staging dimensions quoted below are nominal lengths.

  • Free 4' staging on 4'5" or 6'6" long greenhouses
  • Free 8' staging on 8'7" or 10'7" long greenhouses
  • Free 12' staging on 12'8" or 14'9" long greenhouses
  • Free 16' staging on 16'10" or 18'11" long greenhouses
  • Free 20' staging on 20'11" or 23'0" long greenhouses
  • Free 24' staging on 25'1" long greenhouses

The metal staging is our green painted 2 tier staging.
The wooden staging is our pressure treated 2 tier staging.
Both types of staging are also available as a separate accessory if you want to add matching staging to other parts of the greenhouse.

  • All timber used in the construction of these potting sheds originates from sustainable forests
  • All timber is treated by total immersion in a high quality preservative which is colourless to enhance the natural beauty of the wood
  • This building is easy to deliver if access is restricted - all sections will pass through a normal single door


  • Western red cedar shiplap wall cladding (a managed and replanted natural resource)
  • Strong 21mm pressure treated deal tongued and grooved floor boards (finished size after machining)
  • Strong deal planed framework
  • Framed, ledged and braced single door with mortice lock fitted
  • 1 opening window (10'10"x6'6" potting shed)
  • 2 opening windows (all other sizes)
  • High level non opening windows between the shed and the greenhouse
  • Toughened safety glass
  • Mineral felted roof
  • Door height 6'1" (1845mm)
  • Door width 2'8" (805mm)
  • Eaves height 6'9" (2050mm)
  • Ridge height 8'0" (2445mm)


  • Western Red Cedar frame (a managed and replanted natural resource)
  • Grey powder coated aluminium base plinth (makes greenhouse installation easy)
  • Heavy duty ex 2"x2" and 2"x3" cedar framing (finished sizes 45mm x 45mm and 45mm x 70mm)
  • Strong frame requires no diagonal braces
  • Morticed and tenoned frame joints
  • Morticed and tenoned doors and vents
  • Toughened safety glass
  • Puttyless glazing with substantial external capping screwed in to ensure the glass is tight fitting
  • Full height glass where practical with no unsightly glass overlaps
  • Grey powder coated aluminium gutter with downpipe
  • Black round PVC downpipes and stopends
  • Durable aluminium retaining clips ensure that the roof glass is retained securely at the eaves
  • The glass overhangs into the gutter to ensure that the cedar framing is not exposed at the eaves
  • The glass overhangs the base all round to ensure that the cedar framing is not exposed at low level
  • Stainless steel fixing screws
  • Aluminium base fixing bolts
  • Roof vents are fitted as standard with automatic openers which react to heat to ensure that in hot weather the window ventilates in your absence
  • 1 free roof vent and 1 low level louvre vent included with 10'10"x6'6" and 10'10"x8'7" potting sheds
  • 2 free roof vents and 2 low level louvre vents included with 10'10"x10'7" and 10'10"x12'8" potting sheds
  • Half boarded single sliding door with lockable catch
  • Low threshold doorway for easy access
  • Grey powder coated aluminium door threshold
  • Grey powder coated aluminium pelmet threshold
  • Durable aluminium running gear ensures smoother door operation and longer lasting performance
  • No exposed wood at the top of the door
  • No door timber in contact with the ground
  • Door height 6'2" (1890mm)
  • Door width 1'10" (560mm)
  • Eaves height 5'7" (1700mm) including base plinth

WESTERN RED CEDAR: Western Red Cedar is a naturally resilient timber which lasts longer than pine and other softwoods, even if never treated from new. It has been widely used in construction for over a century. During this time cedar has deservedly earned an unrivalled reputation for its attractive appearance and extraordinary durability. It is the ideal choice for people who are too busy to maintain their garden building. This oily timber has a strong but pleasant aroma which repells insects. Cedar contains hardly any knots. If untreated it will fade to a silvery grey colour. Western Red Cedar is a sustainable resource from the well managed forests of North America.

POWDER COATED ALUMINIUM: The powder coated finish is more attractive than the stark silver finish aluminium greenhouses. The tough finish also has excellent weathering properties and retains its gloss and colour superbly. A good example of powder coating is the finish on your washing machine. Powder coated aluminium greenhouses have a similar finish.

TOUGHENED GLASS: Toughened glass is the best glazing material for use in greenhouses. It is around 6 times stronger than normal glass so it is less likely to break and when it does break toughened glass breaks into harmless small pieces. This makes toughened glass the best option for all the family including children, pets and the elderly. Toughened glass also strengthens the frame and it is heavy which helps to resist wind. Although size limits apply, toughened glass panes are longer than horticultural glass, with no overlapping glass and fewer joins. Where required, joins are neat in-line H-profile joins. Greenhouse glass is subject to lower visual standards than other more expensive glass and may include blemishes or imperfections which do not adversely affect the performance.

BASE PLINTH: The base plinth makes installation much easier. It is designed to be a portable and prefabricated foundation beam. The plinth features a flat underside to spread the weight of the greenhouse over a larger area. The base plinth can be placed on any flat and level surface including soil, gravel, decking, concrete or paving slabs. It is best to prepare a perimeter footing of concrete or paving slabs for the base plinth to stand on. However, with care the base plinth can be placed on any surface including soil or gravel provided that the ground is flat and level.

SIZES - LENGTH AND WIDTH: Sizes are sometimes rounded to the nearest nominal size for ease of reading but the correct external wall sizes are listed alongside the price. The first dimension listed is the width and the second dimension is the length. The width refers to the angled gable walls at the front and rear including the door wall. The length refers to the side walls. The sizes listed are the external wall sizes. These sizes do not include the roof overhang. Many other suppliers quote the overall roof size which is much larger. All sizes are approximate.

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