Modern building construction and rehabilitation is concerned with both the improvement of the building appearance and energy efficiency of the structure. The fenestration; windows, doors and skylights; is an area of particular concern because they are the source of much heat transfer through both conduction and convection. A double glazing quote from qualified installers is part of most construction today.
Using modern technology in doors and windows begins with the use of double-glazing. This term refers to an insulating glass unit made up of two pieces of glass sealed together with a bonding agent and kept apart by an aluminium or vinyl separator that is filled with a moisture absorbent material. The use of double-glazing has produced a reduction in heat transfer by as much as seventy percent over single-glazed window and door units. The types of glass used in double-glazing can also contribute to further energy savings. Low emissivity glass and inert gases are other means to add efficiency to the glazing.
In construction, ?R ratings? are the measurement of the energy transference of materials. In insulation, the higher the R-value, the better it performs. In the case of glass, the lower the number, the better the performance. Glass R-values range from R-5 for single glazing to R1.3 for double-glazing with Low-E glass and Argon gas.
Leaky windows and doors are another contributor to energy transfer. Modern advances in weathering technology; weather-stripping, tighter manufacturing tolerances, new materials and improved technology; have produced window frames that all but eliminate heat transfer around sashes and through gaps in frames. Coupled with double-glazing, window units are now quite energy efficient.
Incorporating better weather sealing, double glazing and better window designs make for a much tighter building structure. The energy savings afforded by the use of such product will return the cost of their purchase through energy savings, often in three to five years. The improved caulks and sealants used during construction further contribute to the integrity of the fenestration and the overall building.
Another consideration not often thought about when a double glazing quotation is prepared for a consumer, is the reduction in noise pollution. Since sound is transmitted in much the same manner as energy, as much as forty percent of the outside noise is attenuated with new, double-glazed windows.
Modern window frame material also contributes to the energy use reduction by diminishing the heat transfer through the frame material as well as in the better weather-stripping. Polyvinyl fluoride, PVC, is often used in residential windows because of the non-conductive nature of PVC. Where aluminium commercial windows are used, they have a non-conductive material poured into a pocket in extrusions, which is then ?debridged,? the conductive aluminium on the bottom of the pocket is removed.
The selection of double-glazed window units for building upgrades is smart. Not only do the new windows look great, but they will save energy expenditures, even paying for themselves by this savings. They reduce illness-producing drafts and provide a quiet atmosphere for any home or office. A double glazing quote is good business.
