πŸ’§Steamy Situation: What Window Condensation Really Means (and What to Do About It)

Joe Underwood • June 30, 2025

Foggy Panes, False Alarms & the Truth About Moisture on Your Windows in Florida Homes

☁️ “Why Are My Windows Sweating?”

If you've ever walked into your Florida home on a humid summer morning and noticed water droplets forming on the inside (or outside) of your windows, you’re not alone. Every week at Windoor Retro Professionals, we get at least one call from a panicked homeowner worried their new windows are leaking, failing, or haunted by the ghost of poor construction past.


ο»ΏBut here’s the thing: most condensation issues have less to do with your windows and more to do with your home’s environment.


Let’s break it down with real answers (and a bit of dry sarcasm — pun very much intended) so you can understand what’s going on, when it’s a problem, and how to fix it.


πŸ€“ What Is Condensation, Really?

In simple terms, condensation happens when warm, moist air meets a cooler surface — like your nice energy-efficient window glass. The moisture in the air turns back into liquid (water droplets) and sticks around. Sound familiar?


There are three types of condensation:

  • πŸ”Ή Interior Condensation – On the inside of your windows, usually due to high humidity in your home.
  • πŸ”Ή Exterior Condensation – On the outside of the window, often in the early morning when outdoor humidity is high.
  • πŸ”Ή Between-the-Glass Condensation – Inside the sealed unit, which usually means the window seal has failed. Bad news.


πŸ›‘ Is It a Bad Sign?

βœ… Interior Condensation?
Not necessarily. In fact, it often means your windows are doing their job — keeping outdoor temperatures out and indoor temperatures in. But if it’s excessive, it could point to ventilation or humidity problems inside your home.


βœ… Exterior Condensation?
Totally normal. Especially during humid mornings in places like
Ocala, Gainesville, Tampa, Orlando, and Saint Petersburg. It’s nature saying, “Hey, your windows are super-insulated!”


❌ Between-the-Glass Condensation?
Yep, that’s bad. It likely means the
seal between the panes of glass has failed — now your insulated glass unit (IGU) is compromised, and your energy efficiency just took a hit. You may need a full sash replacement (if the warranty allows), or in worse cases, a new window.


πŸ§ͺ Air Infiltration & Seal Failure: Are They Related?

They sure can be.


When poor air infiltration ratings go hand-in-hand with improper installation (read: discount window deals too good to be true), seals fail early. Moisture seeps in between the panes. Mold, mildew, and the dreaded foggy look become your new daily vibe. Not chic.


At Windoor Retro Professionals, we only install windows with solid air infiltration and DP ratings — like those from Eastern Architectural, CWS by Pella, Simonton, Viwinco, and more. These brands aren’t just stylish — they’re battle-tested for Florida humidity, salt air, and seasonal abuse.


🧰 Solutions for Window Condensation

Here’s how to tackle it, depending on the type:

πŸ’§ Interior Condensation Solutions:

  • πŸ’¨ Use exhaust fans in kitchens and bathrooms
  • 🌬️ Run dehumidifiers (especially in older homes)
  • πŸ“ Maintain proper ventilation — crack a window occasionally (yes, really)
  • ❄️ Ensure HVAC ducts aren’t blowing cold air directly onto window surfaces


πŸ’§ Exterior Condensation Solutions:

  • 🌿 Trim nearby vegetation that traps moisture
  • 🧹 Keep exterior glass clean to reduce surface tension


πŸ’§ Between-the-Glass Condensation Solutions:

  • 🧾 Check your warranty. Many manufacturers (but not all) cover this — but only if you’re the original purchaser or have a transferrable warranty.
  • πŸ”§ If under warranty, file a claim for IGU replacement.
  • 🏚️ If not under warranty, we’ll help you replace the sash or the entire unit as needed. We’ve got you.


🀫 A Note on Window Sales Gimmicks

Some sales reps love to say:

“Our windows will never fog up!”

Cool story. But it’s just not true. Even the best-performing windows will show some condensation under extreme weather swings — especially in areas like Inverness, Citrus Springs, Homosassa, and Hernando.


That’s why you want to work with a company (πŸ‘‹ hi) that educates you about your home, your climate, and your lifestyle — not one that promises miracles wrapped in laminated brochures.


🏠 Final Thoughts from Windoor Retro Professionals

Condensation doesn’t always mean failure, but it does mean attention. Whether it's a humidity issue inside your house or a failed seal inside your IGU, we’re here to guide you through the diagnosis and fix it properly.


We're proud to serve homeowners throughout Ocala, Gainesville, Tampa, Orlando, Saint Petersburg, Crystal River, Inverness, Citrus Springs, Homosassa, Hernando, and all surrounding areas with honest answers and top-tier products.


Have questions about your windows fogging up like a high school gym locker room? Call us. We’ll clear it up — literally and figuratively.

πŸ“ž Contact Windoor Retro Professionals today for a free consultation and let’s make sure your home stays crystal clear, rain or shine.

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