Roof Dormer Structural Design for Private Residence
Designed a roof dormer to expand and brighten top-floor living space, seamlessly integrated into an existing pitched roof structure with Eurocode-compliant calculations.
Highlights
- Designed a roof dormer to expand and brighten top-floor living space
- Seamlessly integrated into an existing pitched roof structure
- Delivered 3D visualization, position plans, and Eurocode-compliant calculations
- Tackled structural challenges using Simpson Strong-Tie tension anchors
- Focus on clarity, buildability, and long-term performance
Facts
- Year: 2025
- Client: Private client
- Service: Structural Engineering
- Scope: Roof dormer for additional children's bedroom
- Design Code: Eurocode + National Annexes
- Key Features: Cantilevered rafters, anchorage detailing, contractor-oriented documentation
In 2025, we were commissioned by a private client to structurally design a roof dormer as part of a residential attic expansion. The goal was to create additional space and light for a children's bedroom while maintaining harmony with the building's pitched roof design. Our scope included full structural calculations in accordance with Eurocode and national annexes, detailed connection and anchorage designs—especially for the cantilevered rafters—and clear 3D visualizations and position drawings for both the client and the contractor. A key technical challenge was the cantilevered dormer construction. To ensure stability, we developed a back-anchoring solution using Simpson Strong-Tie tension anchors. All structural components were precisely dimensioned and integrated into the existing structure with minimal disturbance. This project exemplifies our commitment to combining practical, regulation-compliant engineering with highly detailed, contractor-friendly documentation—ensuring buildability and performance, even on small-scale private projects.
