What Makes A Good Vinyl Window?


Sash meeting rails showing structural interlock and K-Beam™ reinforcement.



Foam fill adds insulation to the multi-chambered construction.


Welded corners prevent air from leaking through the corners.


Insulated glass unit showing three panes of glass and two Super Spacers.


How To Find Quality Vinyl Double Hung Windows

A quality vinyl double hung window is a well-designed window. When it is well-designed, it will rank high on energy efficiency; prevent a significant amount of air leakage; and last longer than other similar types of windows. Below are the qualities that you want to have on your double hungs. Focus on these 6 key elements.

  1. Interlocks: A window with sashes that nicely interlock with each other and the window frame creates a strong barrier against air leakage.
  2. Reinforced meeting rails: Look for reinforcements in the meeting rail for added strength and stability. They can last for a long time and minimize cold transfer to a huge extent. Non-metal reinforcements are the most ideal ones to use as they are five times stronger than steel and offer a hundred more insulation value than aluminum.
  1. Foam filled frame and sashes: What gives vinyl windows the edge over other alternative options in terms of energy performance is their multi-chambered construction into which the foam fill insulation is injected. This makes them more energy efficient than other window types especially wood and metal. Another product that can be incorporated into the multiple chamber construction to provide maximum energy efficiency is the stick foam.
  2. Weather-stripping: One way to tell how much air your double hung can seal out is the amount and type of weather stripping used around the perimeters of the unit. Ideally, look for double hungs with multiple strips of weather stripping around their sashes. In addition, make sure that the type of weather stripping used can effectively withstand all types of weather conditions, temperature changes, as well as wear and tear.
  3. Welded Corners: Look for double hung windows with corner joints fused together using heat. This technique will give the best protection against air leakage as compared to units whose corners are mechanically joined together.
  4. Insulated Glass: To take full advantage of the energy efficiency of your double hungs, choose the right glass technology. We offer 23 different variations of insulated glass for your double hung windows to meet your energy needs at home.

If you still can’t decide which window is best for your home, contact Zen Windows Little Rock to learn more.



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