Lean-To Project Estimator

Estimate structural timber and sheet materials for a simple lean-to roof project.

Results - Lean-To Project Estimator

Enter your measurements and press calculate.

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.

2.4m × 1.2m
Lean-To Project Estimator
3m × 1.2m
Lean-To Project Estimator
2.4m × 1.8m
Lean-To Project Estimator
3.6m × 1.2m
Lean-To Project Estimator
4.2m × 1.2m
Lean-To Project Estimator
3m × 1.8m
Lean-To Project Estimator
2.4m × 2.4m
Lean-To Project Estimator
4.8m × 1.2m
Lean-To Project Estimator
3.6m × 1.8m
Lean-To Project Estimator
5.4m × 1.2m
Lean-To Project Estimator
2.4m × 3m
Lean-To Project Estimator
3m × 2.4m
Lean-To Project Estimator

Pre-filled calculator pages help visitors jump straight to a useful estimate and then refine the result if needed.

Disclaimer

Material quantities shown are estimates for guidance only. Although typical UK wastage and compaction allowances have been included, actual requirements may vary depending on site conditions, installation methods, and material differences. Please confirm quantities with your installer or supplier before ordering. We accept no liability for inaccuracies, financial loss, or delays arising from the use of these estimates.