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We Are Glass Experts

Upgrade your window glass and enjoy
a warmer home and lower heating bills.

Keep your existing window frames

EnerGlaze upgrades your windows with the very latest in energy-saving glass. We are Ireland’s leading company in retrofitting and with over 5000 upgrades to date. We are currently retrofitting between 20 and 30 houses per week.

Window Glass
New Windows

How does an Energlaze glass upgrade work?

First of all, we carry out a free, no-obligation survey and quotation. This allows us to test the type of glass you have in your window frames and make sure they are suitable for a glass upgrade. We offer an upgrade only if you will benefit from it. Occasionally we come across window frames that are in too bad a condition and to upgrade the glass would not make sense. In these rare instances we can offer the customer the opportunity to change their entire window using our glass and a new frame.

Our Glass

Our Low-E-Plus2™ range of heat-retaining glass uses the latest Pilkington technology. This advanced double-glazed unit offers the lowest U-value to suit your existing frames. A U-value is a measure of heat loss. The lower the U-value the better the product is at reducing heat loss. A typical double-glazed unit will have a U-value of 2.8. Our Low-E-Plus2™ unit will have a U-value of 0.9, making it 70% better than regular double-glazing.

Retrofit Low-E glass
Heat Loss Test

The heat map image above illustrates the difference between Low-E-Plus™ heat-retaining glass (upstairs) and regular double-glazing (downstairs)

Typical Upgrades

  • uPVC – double glazing upgrades
  • Timber – double glazing upgrades
  • Timber – single glazing converted to double glazing
  • Sash windows in period homes – ultra-thin double glazing installed
  • Aluminium – double glazing upgrades
  • Aluminium – single glazing converted to double glazing
  • Conservatory roof conversions