Secondary glazing involves adding an extra slimline window in addition to your existing windows. Our secondary is made from slimline, durable aluminium and It is virtually maintenance free and will give many years of trouble free service. Secondary glazing comes in many styles and colours to match your existing windows to blend in with property. Curtains and blinds remain unaffected most of the time.Reduce Heating BillsWith heating costs rising all the time the sooner you fit secondary glazing, the sooner you will start benefitting. Our secondary glazing can have ordinary Float or Toughened glass specified, or for even better thermal performance - Pilkington 'K' low e glass. By adding the extra pane of glass in addition to your existing windows - draughts and heat loss are dramatically reduced.