Lean Greenhouse

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 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?