ferestre

Ferestre, the Romanian word for windows, are openings in a building’s walls that admit light and air and are typically covered by glass panes set in a frame. They serve several functions: enabling daylight, ventilating interior spaces, providing exterior views, and contributing to energy performance and climate control. The main parts of a window are the frame, the sash that holds the glazing, the glazing itself, and the hardware that governs opening, closing, and locking, plus weatherproof seals.

Materials used for frames vary widely. Timber offers traditional aesthetics and good insulation but requires maintenance. Windows made from uPVC (PVC) are common for their low maintenance and cost. Aluminum frames are strong and slender, often used in modern designs. Composite or fiberglass frames blend materials to balance strength and insulation.

Windows come in many styles. Casement windows hinge along one side; sash windows slide vertically or horizontally; double-hung windows have two movable sashes; fixed or picture windows provide unobstructed views. Specialty forms include bay or bow windows and skylights.

Energy efficiency has become a central concern. Double or triple glazing with low-emissivity coatings, inert gas fills, and warm-edge spacers improve insulation and reduce heat loss. Standards and labeling vary by country and region, but many jurisdictions require energy performance ratings for new installations.

Maintenance involves regular cleaning, hinge and track lubrication, seal replacement, and ensuring watertight installation. Ferestre are a common and essential element of building design, balancing light, ventilation, safety, and aesthetics.