Double Glazing


Manufacture to your own specifications of double & triple glazing, insulated glazing units (IGU’s).

As we have control over the superior components that go into manufacturing of the glazed unit. This gives us an advantage which we want to pass on to our customers in Northern Ireland and the Republic of Ireland.

Double Glazing uses two panes of glass with a space between the panes to form a unit, air is trapped between the panes and acts as an effective layer of insulation this will also have a superior effect on sound levels than a single pane. In order to remain effective it is important that no moisture within the unit and it is kept airtight.

During Ireland’s cold winters without Double Glazing it is likely that the amount of heat lost from a building will be as much as 60% through the single paned windows. The provision of Double Glazing significantly reduces the amount of heat lost. Therefore less money needs to be spent on heating. As a result the fuel saved can overtime pay for the cost of the Double Glazing.

Options when constructing your double glazed unit where are many factors to consider:

  • Standard aluminum spacer bar units
  • Warm edge spacer bar /Super Spacer bar.
  • Gas/Argon filled.
  • soft coat low E Glass
  • Laminated and toughened glass security/safety.
  • Georgian bar design bars made to your template.
  • Decorative glass – This can be Opaque/frosted-sandblasted or etched, colour inlay & lead overlay patterned,
  • Traditional stained glass encapsulated in double glazing unit.
  • Slim profile heritage IGU’s
  • Pilkington Specia slim profile IGU.

Oversize IGU’s

All Purpose glazing have the facility to provide over sized glazed units in a variety of finishes and specifications up to 6 metres in length by 3 metres in height. We can also supply structural silicone glazed units where the customer requires the ‘frameless’ glazed effect so popular due to programmes such as Grand Designs.

Secondary glazing

Secondary glazing by APG is used to dramatically improve the heat or sound insulation of your existing windows. They can be used either with single glazed windows in a listed and older buildings where you want to retain the traditional glazing or with double glazed units where you want to improve the sound insulation.

We can provide a supply & fit service, Our Showroom and Factory are Located at the Glass works, Skeoge industrial estate Derry City Northern Ireland, we have expanded and developed both our product ranges and glazing capabilities over the years and now offer our services to all areas of Ireland, the United kingdom and internationally.