Frequently Asked Questions

  • Why do I have condensation on my windows?
Condensation is visible evidence of excessive moisture in the air.  It may take form as water, frost, or ice on the room surface of windows and doors. Warmer air holds more water – air in the center of a room will hold more water vapor than the air next to the cooler window or door walls.  As the warmer air contacts these cooler areas, the temperature drops and the moisture is also “dropped”, appearing as water on the glass and frames of windows and doors.  This is more frequently seen in the winter months due to extreme differences between inside and outside temperatures.  
Everyday activities put literally gallons of moisture into the air in a home.  Moisture created by house plants, cooking, laundry, bathing and even breathing is kept inside.  Newer, more tightly-built homes trap the moisture inside the structure.  As the warm, moist air moves toward the outside walls and contacts the cooler surface, it condenses and forms water or frost.  
Most homeowners are concerned when a small amount of frost or moisture appears on the lower corners of window or door glass. This is simply vapor that is able to be seen and is generally not considered problematic.    Excessive condensation is when an entire window or door is covered with frost or moisture, where it’s running off and staining woodwork or damaging flooring, walls or wallcovering.  This much excess humidity in the air will be doing more unseendamage – for instance in your attic insulation, where the moisture could freeze within the insulation.  When warmer weather arrives, the meltoff could cause damage very similar to a roof leak.  Additionally, the moisture may be seeking its way outside through the walls, which can damage paint, siding, and framing members, and can cause rust, mold and mildew issues. 
Ventilation plays a large part in condensation issues. Older and/or poorly insulated structures – even with single-glazed windows – often have less condensation problems because the air infiltration moves the inside vapor-laden air towards the drier outside air.  In our quest to construct houses that are better insulated to conserve energy, we have caused a moisture trap within the structure.

The best way to deal with excess condensate is to reduce the amount of water vapor in the inside air.  Relative humidity is the ratio of water vapor present in the air to the most amount of vapor possible (saturation) at the same temperature.  As a general rule of thumb, when average outdoor temperature falls beneath 35 degrees, a 25-30-degree relative indoor humidity is desirable:
(at 70 ° F)
20 to 40° F No more than 40%
10 to 20° F No more than 35%
  0 to 10° F No more than 30%
-10 to  0° F No more than 25%
-20 to -10° F No more than 20%
Below -20° F No more than 15%
Remember – your windows and doors are not causing the condensation – therefore they will not be the solution.    Kitchen and bath vent fans, properly-vented clothes dryers, and operation of dehumidifiers are all good methods of moving large volumes of water vapor out of the home.  
  • Can I paint my vinyl windows?
We do not suggest painting your vinyl window prodcuts as this will void your warranty.
  • Can I apply a window tint to my products?
We do not suggest adding a tint to your window glass as this will void your warranty.
  • What do you recommend to clean the glass?
Use a pre-mixed vinegar-based cleaning solution (or make your own with one part vinegar to ten parts water), and apply to a soft, clean, lint-free microfiber cloth or paper towel.  You may also use an ammonia-free glass cleaner such as Windex (clear liquid) or Sparkle (purple liquid).  Do not use glass cleaners that are ammonia or alcohol based.  They may leave streaks or produce a film that attracts moisture or dust.
  • What do you recommend for cleaning my vinyl windows?
You may wash the window frame and sash with a mixture of mild dish soap and water.  Do not use abrasive our caustic solvents as they may damage the vinyl.
  • I scuffed the woodgrain interior on my windows, can this be fixed?
Minor scratches or scuffs can normally be covered up with the use of a touch-up paint pen.  Contact the dealer from whom the windows were purchased to obtain a touch-up pen.