What is the primary factor in ensuring skylights are safe during installation without curbs?

The primary factor in ensuring skylights are safe during installation without curbs is positioning on sloped roofs. When skylights are installed directly into sloped roofs, proper positioning is essential for preventing water intrusion and ensuring that the skylight can effectively shed water. A well-placed skylight will allow rain and snow to drain away from the glass rather than pooling around it, which reduces the risk of leaks.

Additionally, the angle of the roof influences how well the skylight performs against weather elements such as rain, snow, and wind. If the skylight is not positioned correctly, it may not function properly, leading to potential safety hazards and increased maintenance needs. Therefore, understanding the appropriate positioning and alignment is crucial to the successful and safe installation of skylights on sloped roofs, especially when avoiding the use of curbs that can alter the dynamics of water flow.