Lean-To Project Estimator
Estimate structural timber and sheet materials for a simple lean-to roof project.
Lean-to materials for a 5.4m by 1.2m canopy
For a lean-to measuring 5.4 metres along the wall with a 1.2 metre projection, this estimate includes rafters, roof sheets, posts and beam lengths based on the default project assumptions below.
- Roof area6.48 m²
- Rafters11
- Roof sheets7
- Posts4
- Wall plate / beam5.40 lm each
Results - Lean-To Project Estimator
- Roof area6.48 m²
- Rafters11
- Roof sheets7
- Posts4
- Wall plate / beam5.40 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.
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Pre-filled calculator pages help visitors jump straight to a useful estimate and then refine the result if needed.