Condensation Issues in Double Glazing Medway

Hi, I’m Tim from TS Glazing, and one of the most common concerns homeowners raise when I visit properties across Medway is condensation on their windows.

It’s usually noticed first thing in the morning, water droplets on the inside of the glass, damp window sills, or even mould starting to appear around the frames. Understandably, many people worry that their double glazing has failed. In reality, condensation is often a ventilation issue, not a fault with the glass itself.

One solution we regularly recommend is the addition of trickle vents.

What Causes Condensation on Windows?

Condensation happens when warm, moisture-filled air inside your home hits a cooler surface, like a window. That moisture then turns back into water.

Across Gillingham, Rainham, Chatham, Strood and Rochester, we see condensation caused by everyday activities such as:

Ironically, newer double glazing can sometimes make condensation more noticeable, not because it’s faulty, but because it seals the home so well that moisture has nowhere to escape.

Condensation vs Failed Double Glazing – What’s the Difference?

This is a really important point.

I was recently called to a home in Rainham where the customer thought all their windows were blown. After inspecting them, the glass units were absolutely fine, the real issue was trapped moisture inside the property. Adding ventilation made a huge difference almost immediately.

How Trickle Vents Help

Trickle vents are small, discreet vents fitted to the window frame that allow a controlled amount of fresh air to enter your home.

They help by:

Modern trickle vents are far more subtle and efficient than older designs, and they can make a big difference, especially in bedrooms, kitchens and living areas.

Real Jobs We Did In Medway

In Chatham, we recently fitted trickle vents to a set of bedroom windows where condensation was causing damp patches on the walls. Within weeks, the customer noticed clearer glass and a much fresher feel to the room.

Over in Strood, a family were struggling with constant moisture on their kitchen windows despite having fairly new double glazing. Once we added vents and checked the seals, the issue reduced significantly, without needing to replace any windows.

Do Trickle Vents Make Your Home Colder?

This is something people often worry about, but in practice, proper ventilation actually helps insulation, not harms it.

By reducing excess moisture, your heating works more efficiently, the air feels warmer, and you’re less likely to experience damp or mould problems. The key is controlled airflow, not leaving windows open all day.

Why Medway Homeowners Trust TS Glazing

We’re a husband-and-wife team based in Hempstead, Medway. My wife Sam handles the day-to-day office side of things, while I focus on inspections, repairs and installations.

We don’t upsell or push unnecessary work, we simply explain what’s causing the problem and offer the most cost-effective solution.

We help homeowners across:
Gillingham, Rainham, Chatham, Rochester, Strood, Wigmore, Lordswood and surrounding Medway areas.

Get in Touch

If you’re dealing with condensation on your windows, damp sills, or poor airflow in your home, it doesn’t always mean new windows are needed.

Get in touch with TS Glazing and we’ll inspect the issue, explain what’s happening, and advise whether trickle vents or ventilation improvements are the right solution for you.

Have a look at our Checkatrade reviews or visit our Facebook page to see what local homeowners say about our work, we’re proud to keep Medway’s homes warm, secure, and crystal clear.