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Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door

First Added - February 27 2022
Last Updated - August 4 2022 - 13 Data Points Updated - 4 Data Points Added
Reviewed & curated by a panel of garden building experts. Using methodology 1.1

Product ID: SKU: 5056534551797

Size: 8' x 12'

Merchants Checked: 12

Available From: 1

Mano Mano
£629.99
See Deal

Support WhatShed: by making a purchase after clicking a link above, a portion of the sale supports this site.

93
Amazing! Ranked in the Top 26% of Greenhouses.
Position 217 of 836 Greenhouses - Up 99 places from previous update.
Quality of materials
Construction quality
Ease of construction
Value for money

See how our panel of industry experts helped create the impartial judging criteria used to calculate the Expert Score.

Our verdict on the Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door

The Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door fit with sliding doors and is treated using a galvanised process [1].

Base material: aluminium [2]

Our experts say this has 1 stand out feature. A stand out feature is something found on over 70% of the top 10% of products in a particular category or is an exceptionally good feature as rated by our panel of experts.

1. A galvanised treatment like the one used on this greenhouse is one our experts are happy to say is one of the best around.

Below is a brief overview of how some of the key points of this greenhouse fairs across the market.

Treatment

Great, our experts say most of the treatment options used are among the best.

The galvanised treatment process used here is the best type of treatment out of 2 [3] types we’ve identified on same-size greenhouses that you’ll see getting used on 17% [4] (137 of 787) of all greenhouses analysed, as well as being used on 23% [5] (18 of 78) of the top 10% of greenhouses. You’ll also find the galvanised treatment showing up on 13% of 8′ x 12′ greenhouses (5 in total [6]), and when taking the average Expert Score of those 8′ x 12′ greenhouses (90), the Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door is just above the average with an Expert Score of 92.

Read full analysis for treatment.

Cladding

The aluminium cladding(walls) used here is an about average form of construction for walls and is the only type [7] we’ve identified on same-size greenhouses, that you’ll also see getting used on 23% (180 of 787) of all greenhouses analysed [8], as well as being used on 6% (5 of 78) of the top 10% of greenhouses [9]. You’ll also find the aluminium cladding showing up on 46% of 8′ x 12′ greenhouses (18 in total) [10], and if we compare this item against those 18 we find it’s Expert Score is 26% higher than the average score for a 8′ x 12′ aluminium greenhouse.

Read full analysis for cladding.

Window

The 600mm x 520mm windows on this greenhouse are 1% equal than the average 8′ x 12′ greenhouse.

Read full analysis for window.

Doors

The door height is 1,700.00mm (6′) tall, which after analysing all 8′ x 12′ greenhouses, matches the average exactly.
The door width is 490.00mm (2′) wide, which when compared to all other 8′ x 12′ greenhouses is exactly average.

Read full analysis for doors.

You Might Also Consider

We found 19 8′ x 12′ greenhouses with comparable specifications. The Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door has an Expert Score that is 25% higher than average and is £27 less expensive than average. If you are looking for the best value or highest expert scoring greenhouses out of the 19 with comparable specifications the following might be of interest.

Best value – If you are looking for something comparable that costs less, then you could save £695 with this Outsunny Walk-in Tunnel Greenhouse Gardening Planting Shed Heavy Duty Warm House. It is priced at £93, this is 747% less than this and has an Expert Score of 87, 5 points less than the Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door.

The Outsunny 8x12ft Polycarbonate Walk-in Greenhouse Outdoor w/ Double Sliding Door is the best scoring greenhouse available out of all 19 8′ x 12′ greenhouses we analysed.

High Wind Area – If you live in a particularly exposed or high wind area then having a greenhouse with a thicker cladding and higher than average frame thickness can be preferable. We found at least 2 greenhouses that have a combination of features that can make them more suited to higher wind areas.
Marlborough Greenhouses 12′ x 8′ Wooden Greenhouse with 4 windows
Marlborough Greenhouses 16′ x 6′ Wooden Greenhouse with 4 windows

Coastal Consideration – If you live in a particularly wet or harsher environment such as by the coast then you might want to consider something with a more robust pressure treatment or something made from metal or plastic, both materials that are particularly suited to such harsh environments. We’ve found at least 3 greenhouses that have a combination of features that can make them more suited to higher wind areas.
8′ x 12′ Palram Canopia Octave Silver Greenhouse
8’x12′ Palram Canopia Glory Grey Large Polycarbonate Greenhouse
8’x12′ Palram Canopia Bella Large Walk In Silver Aluminium Framed Greenhouse

Public-Facing – Extra security measures might be more of a concern if you’re placing your building in an area that is more public-facing than a garden. Features such as security windows or even having no windows at all, and the ability to lock all opening doors are usually much more important when you have something that is more public-facing. We found at least 3 greenhouses that have options that you might find a better fit if this is a concern you have.
8’x12′ Palram Canopia Bella Large Walk In Silver Aluminium Framed Greenhouse
8’x12′ Palram Canopia Glory Grey Large Polycarbonate Greenhouse
8’x12′ Palram Canopia Rion Grand Gardener Large Polycarbonate Greenhouse

More Child Friendly – If you have children and you are looking for something that has that little extra in terms of durability then tougher glazing options might be a better option. Here we have at least 3 other options that will fill those needs.
8’x12′ Palram Canopia Bella Large Walk In Silver Aluminium Framed Greenhouse
8’x12′ Palram Canopia Glory Grey Large Polycarbonate Greenhouse
8’x12′ Palram Canopia Rion Hobby Gardener Large Green Greenhouse

Product Details

Building Type
Greenhouses, Large Greenhouses, Metal Greenhouses
Metric Size (Meters)
8' x 12'
Material
Metal
Door Type
Sliding Door
Cladding Type
aluminium
Treatment Type
Galvanised
Door Height (Imperial)
6'
Door Height (Metric)
1700mm
Door Width (Imperial)
2'
Door Width (Metric)
490mm
Depth
12 cm
Door Size
49W x 170H cm
Base Size
244W x 376D x 215H cm
Walls Thickness
4 mm
Window Size (Imperial)
600mm x 520mm
Window Size (Metric)
600mm x 520mm
Pc Panel Thickness
4 mm
Item Label
845-533
Eave Height
135 cm
Foot Stake Length
12 cm
Door Size (Imperial)
490mm x 1700mm
Door Size (Metric)
490mm x 1700mm

Comparisons of Similar Sheds

outsunny-large-walk-in-greenhouse-poly-tunnel-white-L-385786-2933935_1vidaxl-3-piece-garden-dining-set-black-anthracite-L-356281-32178494_1vidaxl-5-piece-garden-dining-set-beige-anthracite-L-356281-32179916_1vidaxl-5-piece-garden-dining-set-brown-anthracite-L-356281-32179918_1703731_01
Expert Score 9090909090
Price £114.99£167.99£243.99£316.99£1,369.00
Size 3.5' x 2'4' x 2'4' x 8'4' x 10'8' x 16'
Brand OutsunnyVida XlVida XlVida XlPalram Canopia
Material MetalMetalMetalMetalMetal
Cladding Thickness 6mm
Guarantee 5 Years
GoGoGoGoGo
Joel Bird

Joel Bird

Profile

Our resident shed building expert Joel was the 2014 winner of Channel 4’s Amazing Spaces Shed of the Year having beat over 10,000 applicants to win. He returned to the show the following year as a judge. He is also the author of The Book of Shed and has designed & built over 50 small bespoke garden builds. Joel has appeared on various TV or Radio shows include George Clarkes Amazing Spaces, Alan Titchmarsh Love your Garden, Chris Evans Breakfast Show and BBC Radio 4’s Saturday Live.

Meet the experts

Sources

Merchants Checked

12 different sources were used to research information on this product, and 1 contained information that we were able to use to compile the data used on this page.

The following merchants were checked on the 06 August, 2022 to see if they stocked this product.

ManoMano UK – 922302 products checked, found 1 match.
Waltons – 231 products checked, found no matches.
Wickes – 19576 products checked, found no matches.
B&Q – 78905 products checked, found no matches.
Wilko.com – 21232 products checked, found no matches.
Homebase – 35509 products checked, found no matches.
Buy Sheds Direct – 1635 products checked, found no matches.
sheds.co.uk – 1999 products checked, found no matches.
BillyOh – 1244 products checked, found no matches.
Garden Buildings Direct – 1284 products checked, found no matches.
Shedstore – 1373 products checked, found no matches.
Tiger Sheds – 635 products checked, found no matches.


1. Galvanised: Galvanising steel or Zinc Galvanised steel as it is sometimes called refers to the process where steel is immersed into molten zinc. This is where a series of zinc-iron alloy forms a series layers via a metallurgical reaction between the iron and zinc, providing a robust coating which is an integral part of the steel.

Galvanised steel is among the most corrosion resistant due to its sacrificial protection and self-repairing properties. According to the Galvanizers Association they say “Hot dip galvanising offers coverage both externally and internally within hollow sections, it self-repairs when damaged, sacrifices itself to protect the base metal, is environmentally sustainable, has good impact and abrasion-resistance and a maintenance-free life of 50 years or more. Galvanised steel is widely used in applications where corrosion protection is needed and can be identified by the crystallised pattern on the surface (often called a ‘spangle’).” 

2. Aluminium: Is a very stable metal that has very low corrosion rates in neutral environments (such as domestic garden buildings). The good corrosion resistance of aluminium alloys means that they are perfectly suited for outdoor and industrial environments. This resistance is caused because aluminium is a very reactive metal with a high affinity for oxygen, The reactive character of the aluminium with oxygen means an aluminium oxide film forms on the metal surface that gives it a protective character.

The most common type of aluminium alloys used for architectural structures (such as garden buildings) is the 6XXX Aluminium-magnesium-silicon.

The Aluminium Federation in the article UK Aluminium Industry Fact Sheet 2, Aluminium and Corrosion say “The 6XXX series alloys are the most common amongst aluminium alloys and are widely used in transport, engineering and architecture.” They then go on to say “Most aluminium casting alloys are classified as having good corrosion resistance, and if used for purposes involving exposure out-of-doors, they will suffer no appreciable loss of strength as a result of corrosion. Weathering tests lasting more than ten years, carried out by The Association of Light Alloy Refiners, confirm that there is little difference in the resistance to atmospheric attack of the casting alloys…” 

3. Treatment types identified: galvanised, untreated 

4. Global treatment data sourced from: All galvanised greenhouses 

5. Top treatment data sourced from: Top 78 galvanised greenhouses 

6. 8′ x 12′ treatment data sourced from: 39 8′ x 12′ galvanised greenhouses 

7. Cladding types identified: aluminium, steel 

8. Global cladding data sourced from: All aluminium greenhouses 

9. Top cladding data sourced from: Top 78 aluminium greenhouses 

10. 8′ x 12′ cladding data sourced from: 39 8′ x 12′ aluminium greenhouses 

Product ID: SKU: 5056534551797

Size: 8' x 12'

Merchants Checked: 12

Available From: 1

Mano Mano
£629.99
See Deal

Support WhatShed: by making a purchase after clicking a link above, a portion of the sale supports this site.