While double glazed windows are typically considered for colder climates to limit heat loss, it can be just as efficient to make use of them in temperate climates to reduce inward heat transfer without a significant loss of light and views. In addition, double glazing increases wind load resistance, reduces noise and improves comfort behind the glass due to less radiation.
SANS 10400 Part XA and SANS 204 have played a major role in the specification of insulated glass in new buildings as double glazing’s thermal performance is significantly higher than single glazing.
“Even the most basic unit comprising clear glass with a standard dehydrated airspace of 12mm will improve the energy efficiency of a window by over 50%,” FG Trading’s Laura Strydom points out.
Select the correct combo
The thermal performance of a double glazed unit varies based on the size of the air cavity, the type and thickness of the glass and whether the unit cavity is filled with dry air or an inert gas.
To help guide AutoSpec users and uphold industry standards, FG Trading’s double glazing range serves as an informative specification. “We encourage architects and specifiers to seek assistance in specifying the correct combination of components to satisfy energy efficiency requirements as well as consult technical experts to prevent potential failure of double glazed units,” advises Strydom.
“It is imperative that the specifier verifies the source of the components as well as the type of system to ensure that only quality components are utilised and are supplied from a reputable and specialised supplier,” she adds.
Tel: 011 450 0263
Caption Main Image:
The basic components of an insulated glass unit.