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8x12ft (2.6x3.8m) Greenhouse 6mm Polycarbonate Reviews

4.9 Rating 14 Reviews
Read Winter Gardenz Reviews

 
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8x12 Polycarbonate Greenhouse
The 8x12 polycarbonate greenhouse is built for all-weather growing, providing energy-efficient insulation, UV protection, and
durability with twin-wall polycarbonate panels. This greenhouse is designed to maintain stable temperatures year-round while offering an expansive growing space.
**Please note:  All greenhouses will be delivered to the nearest Mainfreight Depot
Top Features of the 8x12 Polycarbonate Greenhouse
Spacious 8x12ft footprint – ideal for larger plant collections
Twin-wall polycarbonate panels – offers superior insulation & UV protection
Four roof vents included – ensures optimal airflow and climate control
Rust-resistant aluminum framing – lightweight yet strong
25-year warranty – built for long-term durability
Recommended Accessories for the 8x12 Polycarbonate Greenhouse
Enhance your greenhouse setup with these must-have accessories:
✅ 4x Autovent Openers
✅ 2x Polycarbonate Side Wall Louvre Vent Kits
✅ 1x 12ft 3-Tier Shelving Unit
✅ 1x 8x12 Shade Cover Kit
✅ 1x Screen Mesh Door
✅ Extra set of double doors for back wall
View All Greenhouse Accessories
Polycarbonate Greenhouse Specifications
Width: 2596mm (8ft approx)
Length: 3844mm (12ft approx)
Height (to gutter): 1620mm
Height (to ridge): 2615mm
4 roof vents included
Foundation & Setup Guides
Ensure proper installation with our foundation guides:
Download 8x12ft Foundation Page
Download General Foundation Guide
Key Features
Important Notes
*Greenhouses can only be delivered to your nearest Mainfreight Depot.*
*Kitset greenhouses are designed for plant growing and are not guaranteed to be water-tight as they are not intended as dwellings.*

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Kelly Humphrey
Verified Reviewer
Love my new glasshouse stunning quality and it looks epic
Helpful Report
Posted 2 years ago
Hi Kelly Thank you for your 5 star rating of your 8x12ft greenhouse! We are glad you happy with the quality! Looks amazing amongst your beautiful garden, love the raised planter beds! Happy gardening and feel free to join our 'growing' FB greenhouse group: https://www.facebook.com/groups/thegreenhousegardenernz
Posted 2 years ago
Great sturdy greenhouse. The black powder coated frame looks stylish. We've added LED lighting so can pick produce in the evening.
Helpful Report
Posted 2 years ago
Hey Gavin, Thanks for your 5-star review! We really appreciate it and are happy to know you're enjoying your greenhouse. Happy growing! Feel free to join our Facebook Group https://www.facebook.com/groups/thegreenhousegardenernz
Posted 2 years ago
Mostly straight-forward to assemble, A couple of glitches in the instructions though. When built, looks good and feels solid. We are enjoying using the greenhouse.
Helpful Report
Posted 2 years ago
Thank you for your review and feedback. We are working on rewriting the manuals and adding instructional videos as well to make assembly as smooth as possible. Glad you are enjoying your greenhouse! Feel free to join our 'growing' FB greenhouse group: https://www.facebook.com/groups/thegreenhousegardenernz
Posted 2 years ago
We are really happy with our Greenhouse. We live really close to the sea, it can be super windy and not a problem for our little house. We have the automatic vents, really recommend these. For the first summer of growing it’s been great, lots of veges, cucumbers, tomatoes and still have greens during the winter….love the tips on the website too! Highly recommend
Helpful Report
Posted 2 years ago
Hi Tony! Thanks for your great 5-star review and kind words. We love to hear success stories back from our customers. Here's to many more years of happy greenhouse growing! Feel free to join our 'growing' FB greenhouse group: https://www.facebook.com/groups/thegreenhousegardenernz
Posted 2 years ago
Lynette Ashby
Verified Reviewer
love it xxxxx
Helpful Report
Posted 2 years ago
Thanks for the 5-start review, glad you are loving your greenhouse!
Posted 2 years ago
Paul Tolladay
Verified Reviewer
Found it easy to assemble as instructions were exceptional. Kit set was precision cut so fitted together well. On my second round of crops grown in the greenhouse and am very happy with my investment.
Helpful Report
Posted 2 years ago
Thank you so much for your 5 star rating of 8x12ft (2.6x3.8m) Greenhouse 6mm Polycarbonate. It is great to hear that you found the instructions to be exceptional and that the kit was precision cut for easy assembly. We are delighted to hear that you are happy with your investment and that you have had a successful second round of crops grown in the greenhouse!
Posted 2 years ago
Rachael Laver
Verified Reviewer
Many thanks to the WinterGardenz Team for the superb advice we received when constructing our greenhouse. The instructions were straightforward but when we needed reassurance the team at WinterGardenz were only a phone call away. I have been able to grow things all year round, usually a mean feat in the King Country, in the depth of winter. I have cabbage, broccoli, leek, spinach and lettuce happily growing. During summer I grew gherkins, each day, they loved the hothouse environment. I could not keep up the pickling end of things as they grew so fast. Thanks again, I could not be without my greenhouse.
Helpful Report
Posted 2 years ago
Thank you for your 5-star review of our 8x12ft (2.6x3.8m) Greenhouse 6mm Polycarbonate! It's wonderful to hear that you've been able to grow things all year round, even in the King Country, and that you have enjoyed the hothouse environment for your gherkin crops during summer. Many thanks to you for your review! Feel free to join our greenhouse group on FB: https://www.facebook.com/groups/thegreenhousegardenernz
Posted 2 years ago
Chris Geerlings
Verified Reviewer
We've had several tunnel houses over the years and decided to get polycarbonate green house this time. We like the height and the strength. It has withstood all the strong winds. Too soon to see how the growing season will go but we are optimistic. The only negative was the shipping, we had a battle to get the boxes delivered from the Mainfreight yard. It would have been a better experience if the boxes were delivered directly to our house.
Helpful Report
Posted 2 years ago
Thank you so much for the 5 star rating and your positive experience with our 8x12ft Greenhouse. We're delighted to hear you had an overall positive experience and that the greenhouse was able to withstand strong winds. We appreciate that you have been a loyal customer and have had several tunnel houses with us over the years. Thanks for the shipping feedback, we are looking into different ways to provide the option for home delivery where possible.
Posted 2 years ago