Windcaps

Windcaps is a term that refers to decorative and functional elements placed on top of chimneys. These devices are designed to mitigate the effects of wind on the chimney's draft. Wind can cause downdrafts, which push smoke and combustion gases back into the building, or it can create excessive updrafts, leading to inefficient burning and potential loss of heat. Windcaps are engineered to either prevent direct wind impact or to harness wind energy in a way that stabilizes the draft.

There are several common types of windcaps. Revolving or rotating windcaps are designed to spin as wind hits them, turning away from the chimney opening and thus preventing downdrafts. Static windcaps, on the other hand, use a design that deflects wind without moving parts. These often feature a cap with side vanes or a specific shape that channels wind around the chimney flue. Turbine ventilators are another category, utilizing wind to spin a fan-like mechanism that actively draws smoke and gases up and out of the chimney.

The primary benefit of a windcap is improved chimney performance and safety. By ensuring a consistent and proper draft, they help to prevent the buildup of dangerous carbon monoxide within the home. They can also contribute to more efficient heating by maintaining optimal combustion temperatures. Installation of a windcap is typically straightforward, involving securing the device to the top of the chimney structure. While they offer significant advantages, it is important to ensure that windcaps are kept clean and free of obstructions, such as bird nests or creosote buildup, to maintain their effectiveness.