Guide
Roof and Ceiling Structures for Steel-Frame Homes
How roof form, structural support, drainage, insulation and internal ceilings need to be coordinated as one system.
The roof is both part of the architecture and a critical part of the building envelope. Flat and pitched forms bring different structural, drainage and detailing questions.
For a steel-frame home, roof members, external layers, openings, services and the internal ceiling should be coordinated before work begins.
Choosing and developing the roof form
The architectural design establishes the roof geometry. Engineering then resolves how it is supported, while envelope design addresses water, heat and interfaces with walls and openings.
- Structural spans and support
- Falls and rainwater routes
- Roof penetrations
- Insulation and internal ceiling zones
Flat-roof considerations
A flat appearance still requires designed falls, outlets and carefully resolved edges. The exact build-up and waterproofing solution must suit the project specification and installation conditions.
Related services
Relevant projects
Practical questions
Is the same solution suitable for every project?
No. Site conditions, the architectural brief, approvals and the existing structure all affect the appropriate solution. Project-specific design and engineering are essential.
Can a steel-frame home have a flat or pitched roof?
Either form may be considered, subject to the architecture, engineering, approvals and project-specific detailing.
What information is useful at the start?
Share the plot or property location, available drawings or surveys, and a clear outline of what you want to achieve. Pelasgos can then identify the questions that need professional review.
Next step
Plan your project
Share your site, property or early brief and Pelasgos will help identify the appropriate next steps.