Frequently Asked Questions

FAQ

  • Will MI Windows and Doors contact me if my package was damaged during the shipping process?

  • Why do I have condensation on my windows?

  • What is the difference between tempered and laminated glass?

  • What is STC?

  • What is Solar Heat Gain Coefficient?

  • What is a U-Value?

  • What information is needed to order parts for my product?

  • What documents do I need to provide in order to show proof of purchase or that I am the original homeowner?

  • Is sunlight reflecting off my window glass?

  • What are WOCDs and are they available for MI windows?

  • I have received my measuring form, what do I need to do now? How will I know if I measured correctly?

  • How much can I save by switching out my old windows with new energy efficient windows?

  • How long do I have to wait for my replacement parts to be shipped to me?

  • How do I find out what series or model product I have?

  • Does MI Windows and Doors install full products?

  • Why won’t my window sash stay up?

  • How do I know if I have tempered glass?

  • What is obscured glass?

  • I measured my grids and measured either 1/2" or 3/4", but those choices are not on the order form. What do I do?

  • How do you determine the square footage of a window or door?

  • What is seal failure?

  • What should I do if I have water sitting in the sill area of my window?

  • What is the difference between the shipping and installation options?

  • How do I know if I have Low-E glass?

  • What is the R-Value of a window or door?

  • Do you have any ADA-compliant products?

  • Are there different options for screens?

  • What is AAMA?

  • What is the NFRC?

  • What warranties do you offer?

  • What is the difference between the "OXXO" and the "XIIX" sliding operation?

  • I live in the dry southwest and constantly battle dust and wind coming through my windows. Are my windows faulty? What can I do to prevent and control the dirt?

  • What is the difference between design pressure, performance grade, and structural test pressure?

  • Is a 3050 window 3 feet by 5 feet or 30 inches by 50 inches?

  • I am having new windows installed in my home. How can I make sure we don't run into issues caused by installation errors?