AI construction drawings for roofer estimating

Why calculations take so much time for roofers

For roofing projects, most of the time isn't spent on the calculations themselves, but on searching for, interpreting, and verifying information.

Specifications, roof drawings, details, revisions, and supplementary documents contain all the necessary data, but this information is spread across dozens or sometimes hundreds of pages.

This leads to challenges such as:

• Manually searching for project requirements
• Varying interpretations of roof drawings
• Ambiguities between specifications and details
• Revisions that need to be re-checked
• Variations in roof structures and material types
• High dependency on experienced estimators

The result? More time per request, increased risk of errors, and less capacity to submit additional quotes.

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How AI automatically analyzes construction drawings for roof calculations

Automatically recognizing roof drawings

The Bestek Agent analyzes technical roof drawings and automatically recognizes relevant components, roof structures, details, and level differences.

Automatically recognizing roof surfaces and elements

From pitched roofs to flat roofs, roof segments, penetrations, and skylights: quantities and specifications are automatically extracted from drawings.

Capture dimensions and metadata for roof calculations

Dimensions, areas, pitch angles, and technical specifications are automatically processed into useful calculation information for roofing companies.

Automatically link specifications and roof drawings

Performance requirements from the specifications are automatically linked to the correct components in the construction drawing.

Reprocess revisions of roof drawings

New versions of drawings and documents are automatically re-analyzed without starting from scratch.

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From request to roof calculation in four steps

1. Upload documents

Upload specifications, roof drawings, IFCs, PDFs, revisions, contract documents, or complete ZIP files as you receive them.

2. Select your desired output

Determine which information you want to extract or work with an existing calculation template for roofing projects.

3. Receive structured output

All relevant data is automatically collected, linked, and clearly presented.

4. Start calculating immediately

Work from a consistent calculation basis, including source references and linked project information.

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What information AI extracts from roof drawings

The Specification Agent helps, among other things, with identifying and structuring:

• Roof surfaces and segments
• Roof slopes
• Roof shapes and level differences
• Insulation requirements and RC values
• Bitumen, EPDM, and PVC specifications
• Waterproofing requirements
• Fire safety requirements
• Wind load requirements
• Roof windows and skylights
• Penetrations and ventilation points
• Quantities and amounts
• Revisions and changes
• Discrepancies between documents
• Installation conditions
• Project-specific requirements

This provides quicker insight into what is relevant for roof calculations.

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AI agents for roof calculations

Within the calculation process, multiple AI agents collaborate. This is called an agentic system. Each agent supports a specific part of the process.

Document Analysis Agent

Analyzes specifications, contract documents, and additional documents, structuring all project requirements for roofing projects.

Technical Drawings & Roof Specification Agent

Identifies roof surfaces, roof shapes, level differences, skylights, and technical properties from roof drawings.

Product Portfolio & Standardization Agent

Compares project requirements with standard roof constructions, material variants, and product specifications.

Risk & Inconsistency Agent

Detects contradictions, missing requirements, and discrepancies between documents.

Legal & Contract Analysis Agent

Analyzes contract terms, liabilities, and special requirements within projects.

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How much time do roofing companies save with AI calculation?

By automating the preparatory work, the calculation process shifts from manual searching to focused assessment. Instead of sifting through documents for hours, you can immediately start with a structured calculation basis.

Reading and interpreting specifications

Traditionally, understanding specifications often takes 4 to 8 hours per project.

With the Specification Agent, relevant information is automatically collected and structured, reducing this to 1 to 2 hours.

Analyzing roof drawings

Manually analyzing roof drawings, areas, details, and revisions often takes estimators 6 to 12 hours.

AI assists in recognizing and structuring technical information, reducing this process to 1 to 3 hours.

Identifying Risks

Traditionally, discrepancies and inconsistencies are checked manually.

The Specification Agent automatically assists in identifying inconsistencies, missing requirements, and project risks.

Processing Revisions

When changes occur, the process usually largely starts over.

With AI, new versions of specifications and roof drawings are automatically re-analyzed without starting from scratch again.

As a result, roofing companies can process more requests with the same capacity and provide reliable quotes faster.

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Which roofing companies is this relevant for?

The Specification Agent supports, including:

• Roofing companies
• Flat roof specialists
• Pitched roof specialists
• Renovation projects
• Residential construction projects
• Commercial construction
• Insulation companies
• Roof Renovation Specialists
• Prefab Roof Structures
• Solar Panels & Roof Integration Projects