- Overhangs shield walls: A wider roof edge reduces how much rainwater strikes the walls.
- Gutters collect and redirect water: Instead of water running straight down walls, gutters channel it safely away.
- Less splash-back: Proper roof drainage reduces mud and water bouncing onto walls at ground level.
The Impact of Roof Overhangs and Gutters on Wall Protection Introduction
In The Gambia, many houses are built without proper roof overhangs or gutters. While this may save money during construction, the long-term damage can be costly. Roof design has a direct effect on how much water hits and damages your walls.
Why Overhangs and Gutters Matter
The Consequences of Not Having Them
Walls constantly soaked during rainy season.
Faster growth of mould and algae.
Weakened plaster and finishes.
Erosion around the foundation.
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Practical Tips
• Design with protection: Aim for at least a 0.5–0.75m overhang on roofs. • Install gutters: Use affordable PVC or metal gutters to direct water into a soakaway. • Maintain reularly: Clear leaves and debris from gutters to prevent blockages.
A small investment in roof design pays off for years by keeping walls drier and stronger. Overhangs and gutters are not luxuries — they are essential protection for Gambian homes.