Selecting the right window sill material is important for both functional benefits and aesthetic continuity. Some common material options like cedar and pressure-treated wood each come with drawbacks. Cedar, while naturally resistant to moisture and insects, tends to bleed extractives that can cause staining. It has also become increasingly expensive, prompting many to seek alternatives. Pressure-treated wood, on the other hand, offers resistance to decay but often suffers from warping, splitting, and instability over time. Some pressure-treated varieties can also leach chemicals, making them less appealing for environmentally conscious builders and homeowners.

Belco XT sill stock is made from preservative-treated wood, and provides a superior alternative. It combines the beauty of real wood with enhanced durability, thanks to a non-toxic preservative treatment that resists rot and insect damage without harmful chemical leaching. Factory primed and ready for installation, Belco XT ensures a high-quality, low-maintenance solution that integrates perfectly with timeless real wood window trim designs.