Insulated Glass Units (IGU’s) – A and C Rated

Acorn Glass and Glazing provide thermally efficient glazing to minimise potential heat loss and reduce energy costs and energy usage. Acorn specialise in the manufacture of ‘oversize’ units and all IGU’s, large or small,  are produced in our  Newport factory with each and every one quality checked and stamped before being despatched.
The incorporation of low-emissivity glass, in our windows, is recognised by the Energy Saving Trust as a means of reducing heat loss from a property.

To help improve thermal efficiency in glazing and we use low-emissivity’ (low-e) glass which is designed to reflect heat back into a building, greatly improving its thermal efficiency and maximising the use of the freely available heat from the sun.
This thermal efficiency additionally reduces cold spots and condensation and U values of 1.1 W/m²K double glazed and 0.6 W/m²K in triple glazed can be achieved.

Low-e glass is used in glazing which has extra passive solar gain making it even more efficient than standard low emissivity glazing and is available in a wide, including products that  can meet the required U value specification for public and commercial buildings that have both heating and cooling requirements.

Heat loss is normally measured by the thermal transmittance or U-value, and expressed in W/m2K although, in  simple terms, the lower the U-value, the greater the thermal insulation.

Window Energy Ratings or WERs, A+ to G with G being the most energy efficient,  were introduced in 2006 and they provide a good indicator of how energy-efficient windows for homes can be and take into account solar gain.

Solar control

Glass is being increasingly used in current designs and structures as it provides both a pleasing design feature whilst also reducing building energy costs, although the comfort of building occupants and the external environment are to be carefully considered in any design project.

The solar control glass used by Acorn Glass is designed to provide varying levels of solar control for use in different climates and building designs. With a combination of energy efficient features, it creates a more comfortable interior by collectively reducing overheating, air conditioning costs and excessive heat loss.

Solar control glass can reflect a percentage of solar energy, may transmit controlled amounts of solar radiation through the glass, or may absorb a proportion of it.

Where solar heat gain is considered to be an issue, such as conservatories, conservatories or large facades, solar glass is ideal an Acorn Glass and Glazing can offer several options to produce a suitable solution to your project by fully exploring the aesthetic and functional possibilities of light in both interior and exterior applications, while satisfying complex energy and performance requirements.

Case study

Poorly insulating windows accounting for up to 25% of heat loss in the average home!

Using Low-e glass in IGU’s  provide designers and users with benefits that will include:

  1. Improvements in energy efficiency
  2. A reduction in energy consumption
  3. Meet the latest Building Regulations when combined in an insulating glass unit with a suitable window frame
  4. Save money on heating bills as less energy is required to maintain a comfortable temperature
  5. Reduction in  unsightly internal condensation
  6. Allows you to extend the glazed area of a building without increasing heat loss
  7. Helps windows achieve the highest window efficiency ratings (WERs) possible