Key Features and Importance of uPVC Espags:

• Multi-Point Locking: This is the primary advantage. Instead of locking at just one point (like a traditional single-point lock), an espag secures the sash at multiple points along its vertical edge (top, middle, bottom), significantly increasing security against forced entry.

• Enhanced Weather Sealing: By pulling the sash tightly against the frame at multiple points, espags create a superior compression seal against the gaskets, preventing draughts, water ingress, and improving thermal and acoustic insulation.

• Smooth Operation: A well-designed espag provides smooth and effortless locking and unlocking with a single turn of the handle.

• Durability: Made from robust materials, often steel (zinc-plated or coated for corrosion resistance) or stainless steel, designed for long-term performance.
  
  

uPVC Casement Door Espags:

• More Robust: Designed to handle the greater weight, size, and security demands of uPVC doors.

• More Locking Points: Often feature a higher number of locking points, and these points can be more varied and substantial. Besides cams/mushrooms, door espags frequently include:

  • Hooks: Stronger, larger hooks that engage into robust keeps on the frame, providing significant resistance to prying.

  • Deadbolts: A solid bolt that extends into the frame, similar to a traditional deadbolt.

  • Shootbolts: Rods that extend vertically into the head and sill of the door frame, providing top and bottom locking.

• Longer Lengths: Door espags are much longer, running almost the full height of the door sash.

• PZ Centre: A critical measurement for door espags – the distance from the center of the handle spindle to the center of the keyhole. This must match your door handle.

• Backset: Similar to window espags, but often with a greater range for doors (e.g., 25mm, 35mm, 45mm).