What is so special about Low/E and argon gas when its been proven that Argon Gas evaporates (like all gases) and does that decrease the longevity of window?
Energy Efficiency can be found in all types of the window construction including Aluminum clad wood, fiberglass, and vinyl. Window efficiency is a combination of good installation to reduce air infiltration and proper flashing, along with the overall window construction including: attention to thermal breaks, good glazing, reflective coatings to control heat gain/loss, etc. If the glazing vacuum breaks, then regardless of the gas inside (air or Argon), the glazing needs to be replaced. If low-e coating is present, then it will reflect indoor heat, keeping the home warmer in winter and reflect infrared heat radiation from the summer sun, keeping it cooler inside. Look for the highest quality Energy Star rated windows your project budget will allow.
All the best,
Edward
Vinyl windows transfer less heat. An aluminum window will transfer more heat causing seal failure. Once the seal fails the window will become cloudy or streaky. Also only buy windows that have foam spacers. Metal spacers also transfer more heat causing seal failure. Once the seal fails the gas escapes and oxidation occurs.
Cannot add much to the reviews by Wright Design and TRC home repair. Great all inclusive answers guys! To treat the hot glass light (UV rays) from coming into the sunny side of a house through older style windows, we like windowtint.com. For the less frugal, Smarttint.com has the solution extraordinaire! Check them out!
Hi.
Our vinyl window manufacturer states that only 1/10th of 1% of Argon Gas evaporates per/year. So that window and gas will last a long time.
Next, besides Argon Gas, you can include LowE glass (low emittance), PLUS, fill your frames with foam. Nothing will cut down on energy savings more than these three options.
GOOD LUCK!
Ariel Miller
Urban Remodelers LLC
Vinyl window frames are usually made of polyvinyl chloride (PVC) with ultraviolet light (UV) stabilizers to keep sunlight from breaking down the material. Vinyl window frames do not require painting and have good moisture resistance. The hollow cavities of vinyl frames can be filled with insulation, which makes them thermally superior to standard vinyl and wood frames.
There are three modes of heat transfer: Conduction, convection, and radiation.
Conduction: If you hold a metal rod in your hand and heat is applied to the other end of the rod, eventually the heat will conduct across and you will feel the heat. A metal frame window will heat up in much the same way and conduct the heat to the interior of the home unless the window frame is composed of two frames adjoined together with a rubber thermal break that minimizes the heat transfer. Vinyl is much less conductive than metal.
Radiation: Radiation heat transfer occurs through electromagnetic waves. On a sunny day, you can feel the radiation come in through your single pane window. Low Emissivity (Low-E) coatings are designed to reflect long-wave infrared energy (heat) without compromising the amount of visible light that is transmitted.
Convection: Convective heat transfer occurs when particles within the space come into contact with the a surface that is hot, pick up the heat, and are circulated, transferring the heat to the colder surface. In the case of an insulated glass window, the air particles inside the insulated glass can conduct the heat. Argon and krypton gas are are slow moving gases that are used to displace the air inside the insulated glass unit. These gases are less thermally conductive than air, and thus improve thermal efficiency. These gases ultimately do leak out of the insulated glass unit, but over many years.
All windows are tested for thermal efficiency and visible light emissivity. A window professional can help you understand these results so that you can make an educated selection that are appropriate for your needs.
Hometree, Inc.
Pleasant Hill, CA.
415-769-9809
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