According to a newly released design report from Colin’s Sash Windows, one of the UK’s leading suppliers, steel-look windows and heritage-style doors are set to become some of the most sought-after features in U.S. interiors in 2026.
The research reveals increasing enthusiasm for black-framed glasswork, Crittall-inspired partition doors, and traditional window forms. Once a hallmark of British heritage buildings and loft conversions in London, these features are now finding popularity with American households eager to merge timeless European style with contemporary standards.
“We’ve seen a huge rise in interest for steel-look and heritage designs among American homeowners, particularly in urban areas where lofts, brownstones, and townhouses are being renovated,” said Colin Greenslade, Founder of Colin’s Sash Windows. “Our British heritage gives us a unique perspective on these styles, and we’re excited to share that design expertise with the U.S. market.”
The report identifies several design trends expected to shape U.S. renovations in 2026:
- Steel-look internal glazed doors creating openness in modern interiors.
- Black-framed windows offering bold architectural contrast.
- Traditional sash-style windows updated with energy-efficient glazing.
- Heritage aluminium external doors delivering slim sightlines with durability.
Known for craftsmanship and reliability in the UK and Ireland, Colin’s Sash Windows has expanded into the U.S. to meet growing demand for heritage-inspired glazing. American homeowners, architects, and interior designers now have access to a supplier that blends authentic British design heritage with the energy standards and performance modern U.S. projects demand.















