how do roofers and carpenters use whatsapp to create legally compliant construction documentation

Roofers and carpenters use WECAVIS to convert a WhatsApp photo and a short voice or text message into a legally compliant, timestamped PDF report in under 30 seconds - no app installation, no login, and no form-filling required.

Four document types protect trades legally:

  • Tagesbericht (daily report): The worker photographs completed work, sends a voice note, and WECAVIS AI (powered by Anthropic and xAI) transcribes it from over 30 languages into German, capturing hours worked, materials used, GPS location, and site conditions in a structured, minute-precise PDF.
  • Behinderungsanzeige (obstruction notice): Required under Section 6 VOB/B, this formal notice is generated automatically from a WhatsApp message, protecting claims for schedule extensions or additional costs.
  • Gefahrenmeldung (hazard notice): AI automatically assigns one of four severity classes - minor, moderate, severe, or critical - based on the submitted photo and description.
  • Materialanforderung (material request): Tracks orders across four statuses - open, ordered, delivered, received - for post-calculation (Nachkalkulation).

All reports are stored automatically in the central WECAVIS web portal and assigned to the correct project instantly. Plans start at 99 EUR per month.

how do roofers and carpenters use whatsapp to create legally compliant construction documentation