
Bespoke Edwardian three-quarter span lean-to greenhouse
A Lean-to GREENHOUSE for low walls
When it’s necessary to site your greenhouse against a wall but height is limited a three-quarter span design provides a solution to create the necessary headroom. It can also be used instead of a mono-pitch design to achieve a wider span, catch more sunlight in a secluded area, or simply for the visual impact of the roof line.
The most common method of attachment to the rear wall is with a boxed valley section and lead flashing, typically meeting the wall between 2 and 2.5m high. This keeps everything on your side of a boundary wall with a neighbour or is suitable if the greenhouse is being fitted against the side of your house.
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ELEGANT, TIMELESS & ENDURING
Flexible and reliable weatherproofing
The box section provides a strong fixing point against the side of the wall and contains a gutter to collect rainwater from the short slope of the greenhouse roof. Because the height is flexible the greenhouse can be designed to avoid doors, windows or other features like an overhang or coping stones.
Edwardian three-quarter span lean-to:
• Maximum width 4m
(for a wider span see our ‘Victorian’ spec)
• Length along the wall is not limited
• Ideal for rear walls under 2.5m
• Valley gutter or ‘on-wall’ connection types -
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FOR WALLS UNDER 1.8m
Fix on top of the wall, not against it
If the wall in question has a flat and level top surface the short slope of the roof can be fixed over it – so the green-house is sitting on top of the wall, rather than against the side of it. The gutter will be overhanging the far side so if you do not own the land behind the wall you will need to consider whether this might be an issue.
For a low rear wall (under 1.8m), the ‘on-wall’ junction is necessary, as there is not enough height for a valley gutter connection.
Request a Brochure
Our brochure, which explains more about what we do and how, along with our Signature Collection price list, is available digitally or by post.

The Best of Both Worlds
We use a combination of Accoya® wood and aluminium extrusions to produce unique greenhouses that combine the authenticity and ambience of classic period timber structures with low maintenance and craftsmanship that will last a generation.