Which type of window sill is best suited for areas prone to heavy rainfall?

Explanation:

• A sloped window sill is the best option for areas prone to heavy rainfall because the slope ensures that water runs off quickly, preventing water from accumulating on the sill and potentially leaking into the building.
• The slope directs the water away from the window, keeping the structure dry.

 Additional Information

Vertical Sill:

• Water Accumulation: A vertical sill does not direct water away from the window, allowing water to accumulate on the sill, which may lead to leakage.

• Prone to Mold Growth: The standing water can create an environment conducive to mold and mildew growth, affecting the indoor air quality and structure.

Horizontal Sill:

• Limited Drainage: While it offers some water runoff, the horizontal design does not allow for efficient drainage, especially in heavy rain.

• Water Pooling Risk: Water can pool on a horizontal sill, which increases the risk of water seeping into the building or causing damage to the window frame over time.

Flat Sill:

• Water Trapping: A flat sill does not promote drainage, causing water to remain on the surface, potentially leading to water damage or stains.

• Increased Risk of Leaks: Due to the lack of slope, a flat sill can lead to water leakage into the building, especially during prolonged rain, resulting in moisture damage and deterioration of the structure.