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  • Space saving lean to design
  • Low maintenance, rust free aluminium framing
  • 44mm hollow twin polycarbonate panels are virtually unbreakable
  • Sliding single door
  • Water gutters for drainage
  • Roof vent for air circulation and good ventilation
  • Galvanised steel base
  • Finished in green to blend nicely into your garden
Overall Dimensions (Includes Roof Overhang)
  • (A) Width: 1.25m (4ft1)
  • (B) Depth: 1.92m (6ft4)
  • (C) Ridge: 2.21m (7ft3)
  • (D) Eaves: 1.35m (4ft5)

Why buy the BillyOh Lean-To Greenhouse?

Base <br/>  Included

Galvanised steel base is included to give the greenhouse a strong foundation.

Panoramic <br/> Windows

Allows light to reach the interior throughout the day to get the most out of the sun.

Extra<br/> Head-height

Crouch free design, giving you the ultimate space.

Sliding<br/> Door

For ease of access and protection from slamming.

What is it made from?

Tough, Rust-Proof Aluminium Frame

Our Polycarbonate Lean-To Greenhouse takes pride in being an extremely weatherproof design, made with aluminium frames and brackets with a galvanised steel base. It is sure to last for years, keeping your plants healthy and well-protected for a long period of time.

Opening Roof Vent

The opening roof vent allows your plants to receive the optimum amount of airflow. Similarly, the design includes a water gutter that ensures an efficient drainage system inside your greenhouse.

Twin-wall Polycarbonate

The glazing diffuses sunlight and spreads it around the interior, protecting your plants from excessive heat.

Shatterproof Glazing

As the greenhouse is made from polycarbonate materials, you can be sure that its panels are unlikely to break too.

Convenient Slide Door

Its sliding door prevents it from slamming closed amid strong winds as well, limiting potential damage to both the greenhouse, and its important features.

Low Maintenance

Our BillyOh Polycarbonate Lean-To greenhouse requires very little maintenance, thanks to its hard-wearing materials that are UV-protected.

And much more...

  • Lean-To design
  • Strong design
  • Double doors
  • Twin-wall glazing
  • Integrated roof vent
  • Panoramic windows
  • Aluminium framing
  • Attention to detail
  • Easy to build
  • Fixtures and fittings included
  • Full assembly instructions
  • 20 years experience

Lean-To Polycarbonate Greenhouse

We have both wood and aluminium polycarbonate greenhouses as well as this fantastic lean-to design. Perfect for side-paths and keeping your potting shed close to the house, the lean-to is fully adaptable to your home. Our attractive greenhouses are great value products that blend perfectly with any garden design whilst providing maximum utility.

Frequently Asked Questions

Below you'll find answers to the questions we get asked the most about our products.


  • All around polycarbonate glazing

  • Rust free metal framing

  • Built in guttering

  • Galvanised steel base

  • All fixtures and fittings

  • Comprehensive assembly instructions

Yes! This greenhouse includes a strong, galvanised steel base. This allows it to be light and easily transported while giving your greenhouse protection from bugs and excess moisture. It is easily cleaned and gives the structure the strong, perfect foundation it needs to resist rust and keep your building sturdy for years to come.

Yes, a great feature of the Lean-To Greenhouse is the Adjustable Roof Vent installed on the roof. The opening roof vent allows you to better control the ventilation and air circulation inside your greenhouse, helping you to effectively grow your plants. The vent also allows you to regulate the temperature, so you can prevent overheating and help you grow healthy vegetables and flowers.

The roof and windows of the greenhouse are built with twin wall polycarbonate sheeting, a durable and strong plastic, with two layers for added durability and insulation. Polycarbonate panes are far stronger than traditional glass, so you will not need to worry about them easily shattering and requiring replacement. The polycarbonate sheets allow natural lighting into the inside and retain enough heat for your plants to grow, so you can achieve the best growing results from your own garden!

Integrated Guttering - To effectively move water away from the entrance of the building.

Sliding Door - This will help to prevent the door from slamming in harsh weather.

Roof Vent - This helps to regulate temperature and air flow to your plants.

Rust Free Framing - Aluminium framing gives peace of mind when it comes to rust.

If the building is shorter than 2.5m tall you should not require planning permission, (unless it’s more than 50% of your garden or to be put in your front garden). Planning permission rules can vary by area so we would strongly recommend checking your local council rules before ordering from us.

This means that the structure is designed to rest against the side of another structure to save space and give it support. This takes advantage of an existing structure to save you time and money over a standalone building. Plus, it potentially offers several benefits including insulation for your home and a more stable temperature for growing.

We do not offer an installation service on any of our buildings, our buildings are designed & made to be easy and simple to assemble. Using the assembly instruction included and with a team of just 2 people and a bit of DIY knowledge you can expect to have your BillyOh building up within a day, or as little as 3-4 hours with some of our smaller buildings.

You can place this building against any strong wall or fence. It is designed to easily be supported by any wall of your home or if tall and sturdy enough your property fencing. You should face the structure toward the south to give it the most sunlight all year round. This will extend the growing season and give you the best results.

No, our lean-to greenhouse has one front-facing wall and two side walls. The rear wall comes from your home or another structure. This has many benefits. First, it saves you money over a standalone structure, and second, the walls of our homes generally store extra heat during the day and release it throughout the night. By placing the structure adjacent to this, it can achieve a far more stable temperature than a stand-alone model and even help insulate your home.

Your order can be tracked through the account section on our website or by contacting us directly. You will be contacted after your order by our helpful care team to arrange delivery of your building.
Dimensions 4 x 8 Green
Width 125cm
Depth 192cm
Width (Internal) 122cm
Depth (Internal) 184cm
Eaves Height (Inc Floor) 135cm
Ridge Height (Inc Floor) 221cm
Eaves Height (Excl Floor) 127cm
Ridge Height (Excl Floor) 213cm
Door Opening Size (w x h) 55cm x 159cm
Door Width 60cm
Door Height 161cm
Materials 4 x 8 Green
Frame material Aluminum
Cover Material Hollow Polycarbonate
Base Material Galvanized Steel Base
Glazing Material Polycarbonate glazing
Features 4 x 8 Green
Number of Opening Vents? 1
Colour Green
Greenhouse Style Lean-to Greenhouse
Please Note: All products supplied self assembly flat packed unless otherwise stated.