Lean-To Project Estimator
Estimate structural timber and sheet materials for a simple lean-to roof project.
Lean-to materials for a 3m by 1.8m canopy
For a lean-to measuring 3 metres along the wall with a 1.8 metre projection, this estimate includes rafters, roof sheets, posts and beam lengths based on the default project assumptions below.
- Roof area5.40 m²
- Rafters6
- Roof sheets4
- Posts3
- Wall plate / beam3.00 lm each
Results - Lean-To Project Estimator
- Roof area5.40 m²
- Rafters6
- Roof sheets4
- Posts3
- Wall plate / beam3.00 lm each
How this lean-to estimator works
This estimator covers the roof plan area and works back to rafters, sheet count, posts and core linear timbers for a straightforward lean-to build.
Popular sizes
Popular pre-filled calculator pages.
Pre-filled calculator pages help visitors jump straight to a useful estimate and then refine the result if needed.