What Is the Purpose of a Shed Roof Vent?

Air Circulation

• A shed roof vent promotes healthy air circulation, which is especially important in small, enclosed spaces like sheds and garages. Without any sort of ventilation system, air can grow stagnant, leading to the accumulation of allergens, impurities and even mold growth (if the necessary moisture exists). Air circulation draws moisture and impurities outward, and ensures a healthier indoor environment. The ventilation also makes breathing much easier.

Condensation Control

• Condensation occurs when excess water vapor clings to walls, ceilings and other surfaces. It commonly occurs in very cold weather, but it also occurs in warm, humid weather. A lack of ventilation can cause water vapor to become trapped, thereby leading to excess condensation. If you do not control condensation, mold can grow and hard objects like walls and ceilings can become damaged. Proper ventilation can keep condensation from taking control.

When Not to Vent

• Under certain conditions, venting a shed roof can prove counterproductive. This particularly occurs when the shed roof connects to a wall or second roof on a home, such as a gable roof. Standalone shed roofs should have some form of ventilation, but if you vent a shed roof against another part of a home, it may leave your home vulnerable to rain or snow entry.

Alternatives to Venting

• If your shed roof does contain ventilation, or if venting would prove counterproductive, you can promote healthy air circulation manually. Just open any doors or windows on days with only light humidity. Fans, air purifiers and dehumidifiers can also promote healthy air in a room with stagnant air or excess condensation. Never keep valuable objects in a shed or garage with no ventilation, as they may become permanently damaged if excess condensation or mold should occur.