Aluminum-clad (or alu-clad) windows are a type of window that combines the benefits of wood and aluminum. These windows have a wooden frame on the interior, which provides good insulation and a classic, warm appearance.

The exterior of the window frame is covered (or “clad”) with a layer of aluminum, which offers several advantages: 

1. Durability: Aluminum cladding protects the wooden frame from external elements like rain, snow, and sun damage, increasing the window’s lifespan.

    

2. Low maintenance: Unlike wood, aluminum doesn’t require regular painting or staining to maintain its appearance and protect it from the elements.

    

3. Energy efficiency: The combination of wood and aluminum provides good insulation, helping to keep the interior comfortable and reduce energy costs.

    

4. Versatility: Aluminum cladding is available in various colors and finishes, allowing homeowners to customize the exterior appearance of their windows to match the home’s style.

    

5. Strength: Aluminum adds strength to the window frame, making it more resistant to warping, twisting, or bowing over time.

    

Alu-clad windows are popular in both residential and commercial buildings due to their combination of aesthetic appeal, durability, and energy efficiency. They are particularly well-suited for areas with harsh weather conditions, as the aluminum cladding helps protect the wood from moisture and temperature fluctuations.