The Challenge of Commercial Roofing Estimates
Commercial roofing is a materials-intensive trade. A single low-slope roof project can involve dozens of products — membranes, insulation boards, adhesives, fasteners, edge metal, flashing, sealants, and accessories — each with its own coverage rates, waste factors, and ordering requirements. Getting the bill of materials (BOM) right is critical: under-order and you're waiting on materials while crews sit idle; over-order and you're eating the cost of returns or surplus.
Most commercial roofers build their estimates in spreadsheets, referencing manufacturer spec sheets, supplier catalogs, and their own experience. It works, but it's slow, error-prone, and difficult to hand off to another estimator. Every project starts from scratch, and every estimate carries the risk of a missed line item.
What the Roof Calculator Does
The Low Slope Roof Calculator is a purpose-built estimation tool for commercial roofing contractors. Input your roof dimensions, select your system type and materials, and the calculator generates a complete bill of materials with quantities adjusted for coverage rates, waste factors, and standard packaging sizes.
The tool is designed around the specific needs of low-slope (flat) commercial roofing — the most common type for commercial buildings. It understands roofing system assemblies, not just individual products, so it can ensure your BOM includes every component needed for a complete installation.
Key Features
System-Aware Estimation — Select a roofing system type (TPO, EPDM, PVC, modified bitumen, built-up, etc.) and the calculator knows which components are required. It won't let you forget the edge metal or underestimate the adhesive.
Accurate Waste Factors — Built-in waste calculations based on industry standards and real-world installation experience. Different materials waste at different rates — membrane waste differs from insulation waste differs from fastener waste. The calculator accounts for each one.
Standard Packaging — Quantities are rounded to standard ordering units. You won't get an estimate for 4.7 rolls of membrane — you'll see 5 rolls, because that's how you order it.
Multiple Roof Areas — Handle complex buildings with multiple roof sections, each potentially using different systems or dimensions. The calculator aggregates everything into a single comprehensive BOM.
Material Cost Estimation — Pair quantities with current pricing to generate cost estimates alongside your BOM. Useful for quick quotes and project budgeting.
Who It's For
The Roof Calculator is built for commercial roofing contractors, estimators, and roofing supply distributors. Whether you're a one-truck operation or a regional contractor with multiple crews, accurate material estimation saves money and prevents project delays.
Roofing supply companies benefit as well — the tool helps their customers order correctly the first time, reducing returns, re-orders, and the associated logistics costs.
Built for Essential Roofing Supply
This tool is being developed in partnership with Essential Roofing Supply, a commercial roofing materials distributor. Their product knowledge and industry expertise directly inform the material databases, waste factors, and system configurations built into the calculator.
It's a great example of how Mile High Secure's custom software development works: we partner with domain experts to build tools that solve real problems in their specific industry, combining our technical capabilities with their operational knowledge.
Coming Soon
The Roof Calculator is currently in development. If you're in the commercial roofing industry and interested in early access or want to provide input on features, reach out to our team. We're building this with direct input from the people who will use it, and your perspective is valuable.