Heron Windows Ltd

Quality Windows, Doors and Conservatoriesin East Grinstead, West Sussex

Advantages of PVCu windows

All properties lose heat through their windows. But energy-efficient glazing keeps your home warmer and quieter as well as reducing your energy bills.

How energy-efficient glazing works

Double-glazed windows have two sheets of glass with a gap between them, to create an insulating barrier that keeps heat in. This is sometimes filled with gas. Triple-glazed windows have three sheets of glass, but aren't always better than double-glazed windows.

Energy-efficient windows must also deal with:

  • how well they stop heat from passing through the window
  • how much sunlight travels through the glass
  • how little air can leak in or out around the window