Skylights with hinged sashes should not be installed in roofs with less than what slope?

Skylights with hinged sashes are designed to operate effectively and provide proper drainage, ventilation, and protection from leaks. The recommended slope for roofs with such skylights is 3-in-12. This slope ensures that water drains away from the edge of the skylight and does not pool, minimizing the risk of leaks and promoting better performance over time.

When the roof slope is less than 3-in-12, there is an increased likelihood of water pooling around the skylight. This can lead to deterioration of the surrounding roofing materials, water infiltration, and ultimately, structural damage. The 3-in-12 slope strikes a balance between adequate drainage and manageable construction techniques, making it the standard requirement for installing hinged skylights to safely and effectively manage moisture.