Best Polycarbonate Greenhouses of 2025

Steven Taylor Avatar
Steven Taylor
Last Updated: Jan 3, 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Polycarbonate greenhouses are a popular choice for gardeners and farmers alike. These structures are made with durable polycarbonate panels, which are virtually unbreakable and provide excellent insulation for plants. The panels also allow for plenty of natural light to enter the greenhouse, promoting healthy growth for plants. Polycarbonate greenhouses come in a variety of sizes and styles, from small backyard structures to large commercial buildings. They are easy to assemble and maintain, making them a practical and cost-effective solution for anyone looking to grow plants year-round.

At a Glance: Our Top Picks

VIWAT 6x7.5 FT Polycarbonate Greenhouse Cover #TOP 1
VIWAT 6x7.5 FT Polycarbonate Greenhouse
ftb score rating icon 9.8
AirWire 8x12 FT Polycarbonate Greenhouse Cover #TOP 2
AirWire 8x12 FT Polycarbonate Greenhouse
ftb score rating icon 9.7
GarveeHome 6x10 FT Greenhouse Cover #TOP 3
GarveeHome 6x10 FT Greenhouse
ftb score rating icon 9.5

Top 10 Polycarbonate Greenhouses

#TOP 1

VIWAT 6x7.5 FT Polycarbonate Greenhouse

VIWAT
VGH0607BG
Black
VIWAT 6x7.5 FT Polycarbonate Greenhouse Cover
VIWAT 6x7.5 FT Greenhouse for Outdoors, Polycarbonate Greenhouse with Quick Setup Structure and Roof Vent, Aluminum Large Walk-in Greenhouse for Outside Garden Backyard, Black

The VIWAT Greenhouse is designed for easy setup, featuring a quick-install system that reduces assembly time and increases stability. Its heavy-duty polycarbonate panels and reinforced aluminum frame ensure long-lasting durability, protecting your plants from harsh weather year-round. With UV-coated panels, your plants receive optimal sunlight while being shielded from harmful rays, promoting healthy growth. Additionally, the greenhouse includes adjustable ventilation and a secure lockable door, allowing you to maintain a safe and well-ventilated environment for your greenery.

What We Like
Quick and easy setup
Durable weather-resistant materials
UV protection for plants
Good ventilation options
Secure access features
#TOP 2

AirWire 8x12 FT Polycarbonate Greenhouse

AirWire
AYGF0812BG-C01
Black
AirWire 8x12 FT Polycarbonate Greenhouse Cover
AirWire 8x12 FT Greenhouse for Outdoors, Quick Setup Polycarbonate Greenhouse with Roof Vent, Aluminum Large Walk-in Greenhouse for Outside Garden Backyard, Black

The AirWire Greenhouse is designed for easy assembly, allowing you to set it up in half the time compared to traditional greenhouses. Its sturdy aluminum frame and polycarbonate panels provide excellent protection against harsh weather, ensuring your plants are safe year-round. The greenhouse features UV-resistant panels that filter out harmful rays while letting in beneficial sunlight, promoting healthy plant growth. Additionally, it includes adjustable ventilation and secure access points, allowing you to maintain optimal airflow and keep your plants safe. With AirWire, you can cultivate a flourishing garden with ease and confidence.

What We Like
Quick and easy setup
Durable and weather-resistant
UV protection for plants
Adjustable ventilation
#TOP 3

GarveeHome 6x10 FT Greenhouse

GarveeHome
ZCUt6G
Black
6X10FT
GarveeHome 6x10 FT Greenhouse Cover
6x10 FT Greenhouse for Outdoors, Polycarbonate Greenhouse with Roof Vent, Sliding Lockable Door, Aluminum Large Walk-in Greenhouse for Outside Garden Backyard, Patio, Lawn, Black

The GarveeHome Greenhouse is designed for easy setup, allowing you to create your garden space without hassle. With a straightforward assembly process and slide-in panels, you can save time while building a secure structure. Its robust construction features durable polycarbonate panels and a strong aluminum frame, ensuring your plants are protected from harsh weather conditions. To maintain a healthy environment for your plants, the greenhouse includes an adjustable ventilation system that optimizes airflow, promoting growth. Additionally, the efficient water gutter system helps with drainage and rainwater collection, making your gardening experience more sustainable and manageable.

What We Like
Easy assembly process
Durable and weather-resistant
Adjustable ventilation system
Effective water management
#TOP 4

HOWE 8x12 Greenhouse with Vents

HOWE
YPG204
Black
HOWE 8x12 Greenhouse with Vents Cover
HOWE 8x12x7.5 FT Polycarbonate Greenhouse Double Swing Doors 4 Vents 5.2FT Added Wall Height, Walk-in Large Aluminum Greenhouse Winter Sunroom Greenhouse for Outdoors, Black

The HOWE Greenhouse is designed to enhance your gardening experience with its spacious dimensions and practical features. The 6mm twin-wall panels provide excellent UV protection, making it ideal for nurturing seedlings and heat-loving plants. With a generous 5.2-foot wall height, you can easily walk in without bending over. The dual swing doors and adjustable roof vents ensure optimal ventilation, allowing fresh air to circulate while controlling moisture levels. Additionally, the greenhouse's sturdy aluminum frame offers durability and stability, making it a reliable choice for outdoor use.

What We Like
Ample growing space
Excellent UV protection
Easy access and ventilation
Durable aluminum frame
Rain collection system
#TOP 5

HOWE 8x12 Polycarbonate Greenhouse

HOWE
YPG204
Black
HOWE 8x12 Polycarbonate Greenhouse Cover
HOWE 8x12x7.5 FT Polycarbonate Greenhouse Double Swing Doors 4 Vents 5.2FT Added Wall Height, Walk-in Large Aluminum Greenhouse Sunroom Winter Greenhouse for Outdoors, Black

The HOWE Greenhouse offers a spacious 11.2x7.5x7.4 FT structure, perfect for cultivating plants with its UV-protected twin-wall panels. You can enjoy excellent airflow and humidity control thanks to its two swing doors and four adjustable roof vents. These features help create an ideal growing environment. Built from durable aluminum, this greenhouse is designed for stability, able to withstand winds up to 60 mph and snow loads of 18 psf. Additionally, it includes a convenient rain collection system, making it easy to collect water for your plants. With this greenhouse, gardening becomes more efficient and enjoyable.

What We Like
Spacious design for plants
Excellent ventilation options
Durable aluminum frame
Rain collection system
#TOP 6

RESTISLAND 8x10 FT Greenhouse

RESTISLAND
WSHY-01
Black
8' x 10' x 7.5'
RESTISLAND 8x10 FT Greenhouse Cover
RESTISLAND Aluminum Polycarbonate Greenhouse with Ventilation and Rain Gutter, Polycarbonate Greenhouse, Walk in Greenhouse for Outdoor Backyard Garden 8 x 10 FT

The RESTISLAND Greenhouse is designed to enhance your gardening experience. Its durable 6mm thick polycarbonate panels create an ideal environment by controlling light and temperature, ensuring your plants thrive without the risk of sunburn. The secure lockable door and adjustable roof vents allow you to manage air circulation and humidity effectively, protecting your plants from harsh weather. Additionally, the built-in rain gutter system helps you collect rainwater, making your gardening efforts more eco-friendly. This greenhouse is perfect for all skill levels and provides ample space for a variety of plants and gardening activities.

What We Like
Durable polycarbonate panels
Lockable door for security
Adjustable roof vents
Rainwater collection system
Easy assembly
#TOP 7

Outsunny Polycarbonate Greenhouse for All-Year Gardening

845-057
Dark Green
6' x 4' x 6.5'
Outsunny Polycarbonate Greenhouse for All-Year Gardening Cover
Outsunny 6' x 4' Greenhouse for Outdoors, Polycarbonate Greenhouse with Rain Gutter and Roof Vent, Aluminum Walk-in Green Houses for Outside for Patio Backyard Garden, Dark Green

The Outsunny 6' x 4' x 7' Polycarbonate Greenhouse is the perfect solution for year-round gardening. Its polycarbonate sheets protect your plants from inclement weather while allowing natural light. The greenhouse features a heavy-duty powder-coated aluminum alloy frame with a galvanized base for solid support. You can easily access the greenhouse through its sliding door, made out of the same solid material as the rest of the structure. The hinged rooftop panel ensures proper ventilation inside your plant greenhouse.

What We Like
Protects plants from inclement weather while allowing natural light
Heavy-duty aluminum alloy frame with galvanized base for solid support
Sliding door and hinged rooftop panel for easy access and proper ventilation
#TOP 8

Benass 8x8 FT Heavy Duty Greenhouse

Benass
greenhouse
Black
Benass 8x8 FT Heavy Duty Greenhouse Cover
8x8 FT Greenhouse for Outdoors,Heavy Duty Polycarbonate Greenhouse,Large Walk-in Greenhouse with Roof Vent,Aluminum Hot House for Outside Green House Garden Backyard

The Benass Heavy Duty Greenhouse offers exceptional durability with its robust polycarbonate panels and reinforced aluminum frame, making it perfect for protecting your plants from harsh weather conditions. You can enjoy gardening year-round while ensuring a stable environment for your plants to thrive. The greenhouse features adjustable ventilation and lockable doors, allowing for optimal air circulation and security. Additionally, it comes with essential gardening tools like grow lights and humidity gauges, simplifying your gardening experience and helping your plants flourish.

What We Like
Durable construction
Year-round plant protection
Adjustable ventilation
Easy installation
#TOP 9

CDCASA Polycarbonate Greenhouse 8.2x6.2 FT

Y8L046-ST-LL-RE
Black & Clear
CDCASA Polycarbonate Greenhouse 8.2x6.2 FT Cover
Polycarbonate Greenhouse, 8.2x6.2 FT Easy Assembly Aluminum Heavy Duty Greenhouses for Outdoors w/ Window, Swing Door, Walk-in Green House for Sunroom,Outside, Backyard, Garden, Black

The CDCASA Greenhouse Kit offers a sturdy aluminum frame that resists rust and can handle tough weather. You’ll appreciate how quickly it assembles, taking just four hours with the innovative Quick Connect system. The durable 4mm polycarbonate panels provide excellent light for your plants while blocking harmful UV rays, making it ideal for your garden. Additionally, thoughtful design features like rain gutters and adjustable window vents ensure your plants receive fresh air and proper drainage, enhancing their growth potential.

What We Like
Sturdy aluminum frame
Quick and easy assembly
Durable polycarbonate panels
Good ventilation options
#TOP 10

HOWE 14x9.5 FT Polycarbonate Greenhouse

HOWE
51E3G-8
Black
HOWE 14x9.5 FT Polycarbonate Greenhouse Cover
HOWE 14x9.5x9 FT Polycarbonate Greenhouse with 2 Vents and Double Swing Doors 6FT Added Wall Height, Walk-in Large Winter Greenhouse Sunroom Aluminum Greenhouse for Outdoors, Black

The HOWE Greenhouse offers an impressive 9-foot height and a spacious design, making it perfect for nurturing a variety of plants or even serving as a recreational space. With its dual wide swing doors and adjustable side vents, you can enjoy easy access and optimal air circulation, helping to control moisture levels effectively. The robust construction features heavy-duty panels and an aluminum frame, ensuring durability and stability. Additionally, the greenhouse is equipped with reinforced posts and expansion screws, providing added security against strong winds and heavy snow. This makes it a reliable choice for outdoor gardening enthusiasts.

What We Like
Spacious design for plants
Easy access and ventilation
Durable construction materials
Windproof and snow-resistant
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Are polycarbonate greenhouses any good?

Polycarbonate greenhouses are an excellent choice for growers in various climates. They are durable and can withstand harsh weather conditions. The material is long-lasting and can maintain its shape even after impact.

2. What is the life expectancy of a polycarbonate greenhouse?

The life expectancy of a polycarbonate greenhouse is typically between 10 to 20 years. Both corrugated and twin wall polycarbonate offer benefits such as light diffusion and non-drip properties. Corrugated polycarbonate is easy to cut and install.

3. Which is better for a greenhouse PVC or polycarbonate?

Polycarbonate is a better choice for greenhouses due to its UV-blocking characteristics and UV-reflective properties. It is particularly useful for awnings, sunroom roofing, and greenhouse construction.

4. Do polycarbonate greenhouses stay warm in winter?

Polycarbonate greenhouses offer excellent thermal insulation, allowing for reduced heating costs during the winter. They provide high light transmission and safety benefits, making them a great option to keep your greenhouse warm in winter.

5. What are the cons of polycarbonate?

One downside of polycarbonate sheets is that they are not scratch-resistant and can dent or scratch if not handled with caution. Extra care should be taken to avoid damaging the surface.

6. What thickness polycarbonate is best for a greenhouse?

For twinwall polycarbonate sheets, it is recommended to use 6mm or 10mm thickness. For solid glazing sheets, a thickness between 3mm-6mm is suitable. The most common thickness for greenhouses with solid polycarbonate panels is 6mm, which provides durability in various weather conditions.

7. Does a polycarbonate greenhouse need a base?

Yes, it is important to have a level base for your polycarbonate greenhouse. Not fixing the greenhouse down or having an uneven base can lead to difficulties during installation and may cause glass breakage or polycarbonate sheets to pop out over time.

8. How do you winterize a polycarbonate greenhouse?

To winterize your polycarbonate greenhouse, you can start by deep cleaning and decluttering the space. Consider heating and lighting options, turn off and insulate water outlets, and add insulation to the greenhouse. You can also choose to add plants that require protection during the winter.

9. How do you protect a polycarbonate greenhouse from snow?

To protect a polycarbonate greenhouse from snow, it is recommended to leave the upper vents open or remove several sheets of polycarbonate if ventilation is not provided. This helps reduce the load on the roof and frame and ensures that the soil inside the greenhouse is sufficiently moistened by natural snow ingress.

Editor's Notes

During our polycarbonate greenhouse research, we found 24 polycarbonate greenhouse products and shortlisted 10 quality products. We collected and analyzed 6,979 customer reviews through our big data system to write the polycarbonate greenhouses list. We found that most customers choose polycarbonate greenhouses with an average price of $321.05.

The polycarbonate greenhouses are available for purchase. We have researched hundreds of brands and picked the top brands of polycarbonate greenhouses, including VIWAT, AirWire, GarveeHome, HOWE, RESTISLAND. The seller of top 1 product has received honest feedback from 177 consumers with an average rating of 3.9.

Written by
Steven Taylor Avatar

Steven Taylor grew up in a small town called Beaufort in South Carolina and his passion for building and woodworking has led him to master the latest garden gadgets. He always holds every chance to patch up or sand down his beloved garden. There are various novel technologies in his articles.