Roofing quantity · Homeowners & contractors
Estimate CGI or corrugated roofing sheets, overlap waste, ridge length and material cost from roof plan area, sheet size and local Nepal rates.
Your estimate
CGI / corrugated sheet count and material cost from plan area, pitch and laps.
Plan 100 m² × pitch factor 1.15
After side and end laps
Includes 8% wastage
12 m ridge run
Confirm actual sheet cover width from the manufacturer (profile and gauge vary in Nepal). Fixings, purlins, insulation and labour are not included.
Practical guide
Read the related guide for assumptions, ordering tips and ways to compare the estimate with actual site records.
Same-category tools first so each intent stays clustered—then open the full hub if you need a different job.
Frequently asked questions
Yes. The CGI Sheet Calculator works in your browser without an account. You can install GharNaksa when you want to track the real project costs, payments and progress.
No. It is a planning estimate based on the information you enter. Verify rates, quantities, drawings, local requirements and contract terms with the appropriate qualified professional before making a commitment.
Use GharNaksa to record actual material deliveries, labor, payments, bills and site photos. Comparing the estimate with a dated site record helps reveal cost differences early.