Clear answer
Clear answer, explained.
While they avoid roof penetrations, their higher dead load can be a limitation on some structures. Mechanically attached systems are sometimes preferred in heavy snow regions to reduce roof loading and improve snow shedding. test test
Key points
What this means in practice.
- Ballasted systems add significant permanent roof load
- Snow load is combined with ballast weight in structural design
- Sliding snow and drift patterns must be considered
- Wind uplift resistance must meet code requirements
- Some roofs are better suited to mechanically attached systems
- Structural engineer verification is required in all cases
When this applies
Best-fit environments.
- Industrial flat roofs in cold or high-snowfall regions
- Warehouses and distribution centres using non-penetrating racking
- Buildings with limited allowable roof loading
- Projects subject to snow load and wind design codes
