Double-hung windows are familiar and flexible
Two sliding sashes allow ventilation from the top or bottom. Many modern units tilt inward for cleaning and fit traditional home styles.
Casements open outward
Casement windows can provide a wide opening and strong perimeter compression when closed. They can work well where lifting a sash would be inconvenient.
Exterior clearance matters
A casement sash swings outside. Walkways, decks, landscaping, air conditioners, and nearby structures can affect whether that operation works.
Product quality matters more than style labels
Frame material, glass package, hardware, screens, size, installation method, and warranty can matter more than whether the unit is double-hung or casement.
Bring this checklist to the estimate
- Opening dimensions
- Exterior clearance
- Ventilation preference
- Cleaning access
- Product line
- Warranty
QuoteGeni education note: This guide helps homeowners prepare for contractor conversations. It is not a building-code determination, engineering opinion, inspection, or project quote. Requirements and conditions vary by property and municipality.