Case in Point: A 1928 Tudor at 507 N. Ellsworth St. originally featured Hopes’ “Cottage” series. By 2015, severely corroded, the homeowners faced pressure to replace with vinyl. Instead, a preservation consultant specified custom Hopes replacement casements. The result: the home retained its National Register eligibility.
| Feature | Hopes Steel Window | Typical Vinyl/Aluminum | | :--- | :--- | :--- | | | 1 inch (maximizes glass) | 2.5–3 inches (chunky) | | Thermal Break | Yes (polyamide strip) | Rare (aluminum has none) | | Tensile Strength | 70,000+ psi | < 8,000 psi | | Freeze-Thaw Resilience | Excellent (does not warp) | Poor (vinyl cracks) | | Magnetic Screens | Available (interior/exterior) | Rare |
As Naperville continues to balance growth with preservation, Hopes steel windows stand as the literal and metaphorical frame through which the city views its future: strong, elegant, and enduring.