Why this direction works
A lean-to uses an existing wall for shelter and warmth, and a small potting court gives it the working surface it needs right at the door. The concrete keeps the potting zone firm and clean while the wall does structural and thermal work, making an efficient growing spot in a compact footprint.
Finish and layout observations
Keep the court a grippy, rinseable surface sloped to drain, and detail the junction with the wall so water sheds away from it. Keep the threshold flush so trays and carts move between court and greenhouse cleanly.
Circulation, drainage, and maintenance
- Slope the court away from the supporting wall so water does not collect against it.
- Keep the threshold flush so trays and carts move cleanly.
- Size the court to the potting and staging the lean-to needs.
What to verify before building
- Drainage directed away from the wall.
- A flush threshold at the greenhouse.
- A court sized to real potting work.
Frequently asked questions
What is a lean-to greenhouse?
One built against an existing wall, which provides shelter and some thermal mass, making it efficient in a compact footprint. A potting court in front gives it a firm working surface.
How do I protect the wall from the court’s water?
Slope the court away from the wall so runoff sheds toward the garden, not against the structure. Plan that fall into the pour.
Practical next step
Start with a measured, editable estimate
Use the calculator for the concrete field that can be measured today. Keep steps, walls, utilities, drainage structures, shade supports, and other distinct construction elements separate until their real dimensions and support requirements are known.
Estimate a similar shed padRelated visual directions
