Double-pane windows don’t just give your home a timelessly stylish aesthetic–they can also boost its’ energy efficiency. Just like any part of your home, your double pane windows are susceptible to wear and tear over time, which can lead to discoloration.
In today’s post, your gliding patio doors specialist, Renewal by Andersen® of Seattle, discusses the common causes of double-pane window discoloration and what you can do about it.

What Causes Double-Pane Window Discoloration?
Window discoloration normally happens when there is too much relative humidity or moisture inside your home. Relative humidity depends on the air exchange rate in your home–in other words, the amount of moisture that forms inside your home vs. how quickly your home is able to expel damp air and admit fresh outdoor air. High indoor moisture levels can deteriorate and discolor windows.
Another possible cause of discoloration is a poor caulking seal. Double-check your caulking to see if it’s intact. If some caulking strips are missing or damaged, have them re-caulked by your window and door replacement contractor to prevent moisture-related issues from resurfacing.
Solutions to Window Discoloration
It may be a viable option to replace the discolored glass and leave the frame untouched. However, this option may cause problems in the long run if the frame has underlying problems that have yet to surface. This is the primary reason why most people choose to have their whole window system replaced.
It’s also good practice to address other issues that cause excess moisture in your home such as clogged gutters and downspouts, basement moisture buildup, among other issues. You can also install a waterproof barrier on your home’s foundation to prevent damage to your foundation and moisture buildup.
Do you need new hinged patio doors or double-pane windows? Look no further than Renewal by Andersen of Seattle. We are the Northwest region’s only authorized source of quality Andersen windows and doors. We’re fully committed to improving your homes while giving impeccable workmanship and customer service. Call us today at (206) 777-0954 or fill out our contact form to schedule a FREE consultation. We serve customers in the Seattle area.