What are spacer bars on windows?
A spacer bar, sometimes known as a profile, is the continuous hollow Aluminium frame that separates the two glass panes in a double glazing window. The spacer bar is bonded to the glass panes via a primary and secondary seal, creating an airtight cavity which is filled with air or gas.
What is the best gap for double glazing?
Proving 12mm is the optimum gap for double glazing using Argon gas or air. You can see that in all cases, at smaller gaps than optimum the U factor increases (gets worse) sharply.
What is a thermal spacer bar?
A spacer bar is used to separate the panes of glass forming a cavity width that offers thermal insulation. Spacer bars are constructed into a frame that is smaller than the glass to allow the sealant to be applied flush to the edge of the glass.
What is in the gap between double glazing and why?
Why the size of the “air gap” in Double Glazed UPVC Windows Sealed Unit is important? The air gap is the barrier between the outer and inner faces of the window, and is responsible for reducing heat transfer as much as possible. If the gap is too small, then heat or cold could be radiated from one side to another.
What is the thickness of double glazed windows?
double glazing grew from an overall thickness of 20mm to 24mm and finally settled on 28mm even though thermally, with either air or argon cavities, 24mm is the optimum size.
What is a warm edge spacers on Windows?
A warm edge spacer is a type of spacer bar used in insulated glazing. It separates the panes of glass in double or triple glazing, or curtain walling and seals off the air cavity between each. Recent warm edge spacers are generally made from plastics, although stainless steel can meet the definition.
What is a warm edge spacer made of?
How long should a double glazed unit last?
between 20 and 35 years
The general consensus on double glazing lifespan is estimated to be anything between 20 and 35 years depending on the supplier and the fitter. Others even suggest up to and above 40 years in some cases.
What kind of spacer bar is used for double glazed glass?
Double Glazed Sealed Units are manufactured by us using either Aluminium Spacer Bar or Warm Edge Spacer Bar to provide the air gap between the two panes of glass. Spacer Bar ALUMINIUM SPACER BAR
What kind of bars are used in double glazing windows?
Spacer bars are an important contributor to a double glazing window ’s energy ratings. Aluminium spacer bars are currently the most commonly used in double glazing windows. Light but strong, their flexibility means that they can be formed into a wide variety of shapes and sizes.
Which is less expensive double glazing or warm edge spacer?
Less expensive than warm edge spacers they are, however, less effective in insulating against heat loss than warm edge spacer bars. Low E windows with the highest performing double glazing window energy ratings use a combination of Low E glass, warm edge spacers and argon gas-filled cavity.
What does a double glazing window profile look like?
ALUMINIUM SPACER BAR A spacer bar, sometimes known as a profile, is the continuous hollow Aluminium frame that separates the two glass panes in a double glazing window. The spacer bar is bonded to the glass panes via a primary and secondary seal, creating an airtight cavity which is filled with air or gas.