How to Fix Foggy Windows in Your Home

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How to Fix Foggy Windows in Your Home

Many home buyers want hardwood floors and walk-in pantries. However, nothing can beat a scenic view from inside your house.

Unfortunately, this can all go out the window when yours starts fogging up.
Foggy windows can be annoying for some homeowners, but they could also signify an underlying problem. Window condensation could indicate a problem with the windows or something inside your house.

If you notice your window glass continuously fogging up, this article is for you. We discuss the reasons behind foggy windows and how to fix them before it escalates into a bigger problem. Read on to find out more.

Understand the Cause

Now, it’s crucial to understand that your home windows do not cause condensation. However, it is the first place where signs of condensation will appear. Condensation is more common in cold weather, but it can also happen during hot summer months.


Differences in indoor and outdoor temperatures can cause humidity levels to rise. That’s why you’ll have foggy windows if you leave the AC on during humid months. The same thing can happen if you leave the heating on in the winter.

These two occurrences are normal and aren’t usually a cause for concern. However, it becomes an issue if condensation occurs between the two panels of glass.

Foggy windows left alone can impede your windows’ insulation properties. It can also damage the seals and frames.

Your Windows Are Old and Damaged

Almost all windows have an insulated glass unit. Also known as thermal windows and IGUs, these units are held to a high standard because they are more energy efficient. Your windows may start fogging up from the inside if the seal has begun to deteriorate.

Window seals decline over time, so your windows may be fogging up simply due to old age. However, it can also get damaged from water and heat exposure. Too much water buildup near your windows leaves the seals open for damage.

That’s why it’s vital to check your window seals after heavy rainstorms or floods. Excess heat or warm air can cause the air inside the panes to expand. This causes the seals to stretch.

Why Humidity is Bad for Your Home

Foggy windows may not seem like a big deal. However, this indicator of humidity can also impact your and your family’s health. This moisture is a breeding site for mold and mildew.

If left alone, it can cause various respiratory health problems and allergies. It can also result in nasal and sinus infections, lethargy, and dizziness.

Choose the Right Glass for Your Climate

Manufacturers offer different levels of insulation for various needs. Consider the climate of your area when choosing the right glass for your home.

If your average temperature in January sits at 35°F or less, you are more likely to experience foggy windows.

Increase Ventilation

One way to reduce indoor humidity is to increase ventilation in your home. Good air circulation can prevent warm air from clinging to your windows. Leave a window open in each room for at least a few minutes.

This will allow you to expel humid air and let dry air refresh your home. You also want to have vents or exhaust fans in kitchens and bathrooms. If you have an attic, don’t forget to clean the vents to keep the path clear to let humid air out.

Eliminate Excess Moisture

Using a dehumidifier can help if condensation occurs on the interior side of your windows. You can check your indoor humidity levels with a monitor. This handy tool is available at most home centers and building supply stores.

Window Defogging

Window defogging is a great procedure to improve window visibility. The great thing about window defogging is that you don’t have to deconstruct your windows. However, keep in mind that defogging does not fix your window’s lost insulating capabilities.

Some argue that defogging your windows could impact their R-value. If you’re only after cosmetic improvement, this procedure can be a great option for you.

Window defogging is best done by a professional. Warm weather is ideal, making this a perfect addition to your home improvement checklist for this summer. This is how professionals conduct window defogging.

Drill Holes in Glass

Window defogging expels excess moisture from inside your windows. The technician will start by drilling two tiny holes. It can take a few hours up to a few days to clean out the moisture from the window.

Applying the Anti-Fog Solution and Sealant

After eliminating moisture, the technician will apply the anti-fog solution. One great thing about expelling moisture from your windows is that they get rid of stains. This includes deposits of magnesium and calcium.

The technician will then apply a liquid sealant to the bottom of the glass. They will seal holes that were drilled prior to the application of the anti-fog solution.

Adding Vents

The technician will finish the procedure by adding vents. This allows the window to expel moisture and air independently.

Get a Window Repair or Replacement

If you have old windows, the best thing you can do is replace them. Most modern windows have an inner seal and an outer seal.

The inner seal protects the window from corrosion and moisture. The latter preserves the window’s strength. If one seal breaks, it’s only a matter of time before you need a window replacement.

Fortunately, this is the perfect opportunity to shop for more efficient windows. Choose manufacturers that test for moisture infiltration, or ask an expert about your best choices.

Fix Foggy Windows Today With Michigan Screen and Window Repair

Foggy windows don’t only bar your home’s esthetic. It could also be a sign of insulation problems or old and damaged windows.

Michigan Screen and Window Repair can fabricate new windows and screens according to your needs. We specialize in glass replacement, re-glazing, screen repairs, and much more. If you’re in West Michigan, contact us today for a free assessment and quote.

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COVID 19 Update

We are open for emergency, essential and curbside service.
If you have a window emergency, work that is essential for safety and operation of your home or business, or would like to drop off a screen to be repaired then we can help you!

Here’s how it works:

– Call 616-275-4752 and tell us what work you need done.
– We will either schedule an appointment to look at your essential/emergency service or schedule a time for curbside service.
– Our team has been and will continue to practice social distancing and hygiene. We will greet you with a mask and a smile with sanitized hands and try to walk you through the process through this unusual time.
– We will continue to communicate with you remotely to the completion of your service.