Don’t sacrifice strength at these critical barriers to your home. Signature windows use the most technologically advanced materials for maximized strength against harsh weather, intrusion, and health hazards.

Strength and Security Features

Signature comes standard with EnviroTherm injection foam filled polyurethane insulation in the frame EnviroTherm
injection foam filled polyurethane in the frame extrusions makes Signature an exceptionally insulated window and keeps your home cooler in the summer and warmer in the winter

Multi-chamber uPVC sash and frame extrusions create added insulation

Heavy duty sash stops and vent latches for added beauty and safety while still allowing ventilation
Fusion welded master frame and sashes provide maximum strength at all corners and seal chambers adding to Signature’s insulation value
True sloped sill (not the snap-in type) eliminates weep holes that can clog
Full interlock at the meeting rail provides added strength, security, and performance

Endurex composite, non-metallic reinforcement at the meeting rails adds strength, limits conduction and convection, and maximizes energy efficiency

Locking balance shoe allows Signature’s sashes to tilt in for effortless cleaning, while remaining secure in the frame
Triple antimicrobial weather stripping maintains a weather tight fit between the sash and frame MicroShield antimicrobial triple weather stripping and bulb seals provide maximum efficiency and resistance to air and water infiltration, mold, dust, fungi, pollen, and harmful bacteria