Damp Windows and Morning Mold? Why Your Windows Are "Crying" and How to Fix It (Without Replacing the Frames!)

Do you recognize this sight? It’s a cold winter morning, you pull back the curtains, and your windows look like they’ve just stepped out of a shower. Water is streaming down the glass, pooling on the sill, and dark, worrying spots are beginning to appear in the corners.

If this sounds familiar, you aren't alone. At Glass Squad LTD, we are frequently asked: "Why is there so much condensation inside my windows?" Using the photos above from a recent case, we’ll explain why this happens and—most importantly—how you can fix it effectively, often without the massive cost of replacing your entire window frames.

What the Photos Tell Us: A Diagnosis

The images provided are a textbook example of what happens when a double-glazing unit fails to meet modern thermal insulation standards.

• The Main Surface (Image 2): You can see heavy condensation across the glass. This occurs because the inner pane of glass is so cold that the warm, humid air inside your home hits it and instantly turns into liquid water.

• The Edges and Corners (Images 1 & 3): This is where the problem is most severe. Notice how the water collects most heavily at the very edges of the glass near the seal. In Image 3, you can already see black residue in the corner—this is the start of mold, which thrives in these damp conditions.

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The Culprits: "Cold" Spacers and Missing Argon

The reason these windows are "crying" is due to two missing components that are standard in every Glass Squad LTD installation.

1. The Missing "Warm Edge" Spacer Bar

Look closely at the edges of the glass in the photos. In older or cheaper units, the two panes of glass are held apart by a spacer bar made of aluminum.

Because aluminum is a metal, it is an excellent conductor of heat (and cold). When it’s freezing outside, the aluminum bar acts as a "thermal bridge," quickly transferring the outside cold directly to the inner pane of glass. This makes the edges of your window significantly colder than the center, which is why moisture and mold always start there first.

2. The Absence of Argon Gas

What sits between your panes of glass is just as important as the glass itself. The units in these photos likely contain only plain air.

Modern high-performance units are filled with Argon gas. Argon is much denser than air and a very poor conductor of heat. It acts like an invisible thermal blanket, keeping the heat inside your home and preventing the cold from chilling the inner pane of glass.

The Glass Squad Solution: Replace the Glass, Not the Window!

Many homeowners see windows like these and assume they need to replace the entire window system—frames and all. This is a common misconception that can cost you thousands of pounds unnecessarily.

In many cases, your window frames (whether PVC, timber, or aluminum) are still in great structural shape. The problem lies solely with the outdated glass unit.

The Solution: IGU (Insulated Glass Unit) Replacement.

At Glass Squad LTD, we specialize in "upgrading" your existing windows. We can remove the old, "cold" glass units and install modern, energy-efficient ones into your existing frames. These new units feature:

• Warm Edge Spacer Bars: Made from a polymer composite that does not conduct cold, eliminating the thermal bridge and stopping mold at the source.

• Argon Gas Filling: Dramatically improving the insulation of the window.

• Low-E Coating: An invisible metal oxide coating that reflects heat back into your room.

Summary

If your windows look like the ones in these photos, you don't have to live with dampness and health-threatening mold. You also don't have to break the bank on full window replacements.

Contact Glass Squad LTD today. We can swap your old, failing glass for high-tech, warm units—saving you money on heating, eliminating condensation, and making your home a healthier place to live.

Why choose us?

• Expert Diagnosis: We’ll assess your current windows to see if a glass-only replacement is right for you.

• Premium Quality: We only use the best Warm Edge technology and Argon-filled units.

• Mess-Free Installation: Replacing glass is faster and much less intrusive than replacing whole frames.