FAQ's

Get answers to frequently asked questions.

Have a question about your windows and doors? Check out answers to some common questions below.

​Why is there moisture on the interior of the glass?

Today's tighter, more energy efficient homes can increase indoor humidity. Older homes had random gaps, which allowed for the release of warm, moist air and the replacement of cool, drier air. Newer construction methods do not allow this natural air-to-air exchange, thus trapping any internally created humidity within the structure. Elevated humidity can cause condensation to form on cold surfaces. Sweaty, frosted or icy windows are all forms of condensation problems. Most people assume these situations indicate a problem with the window, but in fact, these are symptoms of excess humidity in the home. Condensation on your windows could be an indicator that other moisture problems could develop.

Indoor humidity levels should be monitored to eliminate the possibility of condensation. The chart below illustrates recommended winter humidity levels:

Outdoor Temperature :: Indoor Humidity at 70° F

  • -20 degrees F or below = not over 15%
  • -20 degrees F to -10 degrees F = not over 20%
  • -10 degrees F to 0 degrees F = not over 25%
  • 0 degrees F to +10 degrees F = not over 30%
  • +10 degrees F to +35 degrees F = not over 35%

These are recommended humidity levels, and may not be applicable for every household. Differences in glass types (Low-E vs. clear) will allow for variances in humidity levels. Window condensation is a good indicator as to the maximum allowable humidity level. If your windows begin to sweat, the humidity in your home is too high.

What causes our window to leak?

Sometimes, what is perceived as a leak is actually condensation.

If you have determined that your window or door is actually leaking, the next step is to determine the location and cause of the leak. You may do this by wiping away any visible moisture from the interior of the window or door, and then determining the point of penetration. By identifying the breach, the product may be able to be repaired. If a repair isn't possible, the product may need to be replaced.

It is very important that your windows and doors be properly installed following the steps described in the instructions provided with your Windsor unit. Improper installation may cause your unit to perform poorly, which could reduce the life expectancy and/or void the warranty.

Rarely, a product may be defective. Under those circumstances, you would need to contact your local distributor to review for possible claim.

How can I repair a leaky window?

It is very important that your windows and doors be inspected and installed following the steps described in the instructions provided with your Windsor unit. Improper installation may cause your unit to perform poorly, which could reduce the life expectancy and/or void the warranty. Current installation instructions may be found here.

Rarely, a product may be defective. Under those circumstances, you would need to contact your local distributor to review for possible claim.

How should I maintain my new windows in order to keep the warranty intact?

A yearly inspection of your windows and doors should be performed. Special attention should be paid to:

  • Sealants – inspect sealants for any cracking, peeling or gaps that may have opened over time.
  • Paint – check for damage, deterioration, checking or peeling.
  • Finish – check for deterioration of interior topcoat wood finishes and finishes applied to hardware.
  • Glass – check for any cracks or fogging between the panes of insulated glass.
  • Hardware – check for any dirt or grime build-up which may cause poor operation or excessive wear.
  • Door sills – check for any dirt or grime build-up, which may cause poor operation or excessive wear.
  • Gaskets – check frame corner gaskets for any voids or deterioration.

To achieve optimum performance from your windows and doors, and to preserve the warranty, please follow the maintenance guidelines, which are detailed in Windsor's Care and Use Guide.

What's the best way to choose windows for my home?

We understand how important it is to make an informed decision about the window and door products you choose for your home. The Windows & Doors 101 resource center on our website was designed to answer your questions. There, you will find specific information regarding Window & Door Styles, Materials, Finishes and Glazings so you can make the best decision for your location and personal preference. 

You may also find it helpful to visit a Windsor distributor to see product displays.

How should I remove label residue from my windows?

Never use a razor blade or other metallic object to clean or remove residue from your window or door products. These can scratch the glass, leading to obstruction of clarity and/or glass breakage.

For general cleaning of the glass surface, we recommend a vinegar-based solution (10% vinegar and 90% water) or commercially available ammonia-free and alcohol-free window cleaners. Clean the glass surface with a lint-free cloth or paper towel to clean. Wipe dry with a clean, dry, lint-free cloth or paper towel. Avoid getting cleaning agents on any non-glass components.

Occasional spot cleaning may be required to remove stubborn dirt or foreign material that has adhered to the glass surface. Apply a small amount of non-abrasive cleaner (such as Bar Keeper's Friend) or organic solvent (such as Goof Off) to a clean, dry, lint-free cloth or paper towel. DO NOT APPLY CLEANER DIRECTLY TO THE GLASS. On the area affected, work the cloth in multiple directions until spot is removed. Avoid getting cleaning agents on any non-glass components. Follow the general cleaning instructions to remove any cleaner residue.

How can I find a reputable person to install my replacement windows?

Windsor has distribution throughout the continental United States. Locate the distributor nearest you with our distributor locator tool. We currently have distribution in selected areas of Canada and Mexico, and our reach continues to expand.

How do I get replacement parts for my windows?

For assistance in identifying specific parts of our products, visit the Parts and Service Resource on our website. There you may select the Windsor product and type that is installed in your home. Part identification drawings have been created to help you understand which parts you need. 

How do I make a warranty claim?

If you have any questions regarding the warranty or have a claim under the provisions of the warranty, please contact your local authorized independent Windsor distributor. Windsor Windows & Doors, as manufacturer, warrants that all of our windows and patio doors will be free from defects in materials and workmanship which significantly impair their operation and proper usage, subject to conditions and limitations within the warranty. The warranty is transferable to subsequent structure owners, up to the time limits of the warranty. If you need assistance, contact our manufacturing facilities:

Windsor Window & Doors
900 South 19th Street
West Des Moines, IA 50265
515-223-6660

Windsor Windows & Doors
2210 Stafford Street Extension
Monroe, NC 28110
704-283-7459

To process a claim you must furnish the glass code, which is the numbers and/or letters printed within the insulated glass unit. For most units produced before 2007 and recent products that are extremely large or unique in shape, this code will be etched on the glass. For most units produced after 2007, this code will be located on the spacer that separates the two panes of glass.

You must notify Windsor or your local independent Windsor distributor of any defects within a reasonable time, but no later than 30 days after the defect is discovered or reasonably should have been discovered, and within the period covered by the warranty. Windsor may require any defective parts be returned to Windsor or our closest distributor. In order to process a warranty claim, Windsor reserves the right to inspect the product before it is removed or modified in any way. Windsor field visits may result in service charges if a non-warranty site survey is required and/or requested.