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Lean Greenhouse
A lean to greenhouse is the perfect choice when you want all the benefits of a full-size greenhouse – without taking up your entire garden. Designed to lean against an existing wall or structure, these compact and efficient greenhouses maximise light, retain warmth, and save space. Whether you're growing herbs by your kitchen wall or nurturing tomatoes on a sunny garage side, a lean greenhouse transforms overlooked spaces into productive growing zones. From small patios to inner courtyards, lean to models make it easier than ever to garden in tight areas – all with elegance and efficiency.
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How Is a Lean to Greenhouse Installed?
Installing a lean to greenhouse is simple – but proper anchoring is key to performance and longevity. These models are mounted directly against a vertical surface, with the rear panel left open or partially covered, depending on the design. They typically come with a wall-fixing kit to anchor the frame securely to brick, concrete, or wood.
When installing your lean to house greenhouse, it’s important to ensure a stable base and level alignment. Wall brackets, plugs, and screws should match the wall type, and a silicone seal may be applied to prevent water ingress. Many customers choose to place theirs against south-facing walls to maximise sunlight exposure throughout the day.
What Kind of Wall Can You Lean on?
A lean on greenhouse can be mounted against most solid, load-bearing walls – such as house exteriors, garages, sheds, or garden walls made of brick, stone, or timber. Avoid flimsy fencing or walls with poor foundations, as the structure needs a stable vertical surface to remain secure in wind and rain.
The material of the wall can also affect insulation performance. Brick and concrete walls store and slowly release heat, helping to stabilise the internal temperature overnight. If you have limited space or shade in your garden, placing a leaning greenhouse on a sunlit wall will significantly improve growing conditions.
Available in All Sizes – From Compact to Spacious
Lean to greenhouses are incredibly versatile in size. Whether you're looking for a narrow seed-starting station or a full-length garden wall greenhouse, we offer options from compact 2 ft models to larger 10+ ft lengths. This makes them ideal for urban balconies, courtyards, and side alleys – or as practical add-ons to existing garden buildings.
Even with limited footprint, lean to models allow for vertical growing with shelving and hanging systems. Our lean to greenhouse range includes both polycarbonate and glass glazing, black or silver frames, and a variety of roof slopes to fit your aesthetic and functional needs.
Why Polycarbonate Makes the Most of Every Inch
For lean to structures, polycarbonate is often the smartest glazing material. Its lightweight nature puts less stress on the frame and mounting points, while the twin-wall panels insulate effectively, reducing heat loss through the side and roof panels. In compact settings, this thermal performance helps maintain a stable microclimate.
A polycarbonate lean to greenhouse also diffuses sunlight, preventing plant burn even when mounted against a sun-drenched wall. It’s safer, especially in family gardens, as polycarbonate won’t shatter like traditional glass. Many models feature 4 mm twin-wall panels, giving you excellent protection without the weight.
Lean to vs Freestanding – Which Is Right for You?
| Feature | Lean to Greenhouse | Freestanding Greenhouse |
|---|---|---|
| Placement | Mounted against an existing wall | Standalone, open placement |
| Space Efficiency | High – ideal for small or narrow areas | Requires more footprint |
| Heat Retention | Better – wall stores and radiates heat | Moderate – loses heat on all sides |
| Light Access | One open side only – best against sun-facing wall | 360° light access |
| Flexibility | Fixed against one structure | Movable and fully modular |