Whether you’re thinking about buying secondary glazing and wondering if they are easier to clean, or just want to freshen up your existing ones, we can help. 
 
Our team has put together clear instructions on how to clean secondary glazed windows. We also cover cleaning old windows connected to your secondary glazing. These steps will ensure you have clean secondary glazed windows in no time! 

What tools do I need to clean windows 

When cleaning windows, it is best to do it properly or not do it at all. In order to effectively and safely clean your secondary glazing, you will need the appropriate equipment. 
 
You will need: 
Duster 
Gap brush 
Lukewarm water 
Microfibre cloths 
Mild soap 
Soft sponge or squeegee 
Vacuum 
 
Try to avoid chemical cleaners as they can cause health adversities. In addition, don’t use steel, wool or wired tools as these can scratch your windows. 
 
Once you have acquired all the equipment, you can begin to clean your secondary glazed windows. 
List of tools needed for window cleaning
Steps on how to clean secondary glazing correctly

Cleaning secondary glazing, step-by-step: 

Cleaning secondary glazing isn't as simple as wiping down a window. There is a best practice to cleaning secondary glazing and we've got the guide for it: 
 
Use a duster to remove dust and debris from the frames and windows. 
Clean debris from the gaps in the frames with a gap brush. 
Wipe down the frames and windows with soapy water using your chosen tool. 
For stubborn stains, apply more pressure with a cloth or sponge with soapy water. 
Dry the frames and windows with a clean cloth. 
Open the windows fully and repeat steps 1-5 on the other side. If you can’t reach, refer to the alternative methods below. 

What if I Can’t Reach the Other Side of the Window? 

One challenge with secondary glazing is accessing the other side of the window. While this depends on the hinges, the old window may be blocking the way to the secondary glazing. If this is the case, you can use a robot cleaner or a sponge connected to a magnet. 
 

Robot Cleaner: 

 
Turn on the robot and select your preferred settings. 
Add a small amount of soap to the rubber pads. 
Place the robot on the underside of the window and let it work its magic. 
Once the robot finishes, remove it from the window and turn it off. 
Rinse the rubber pads with water and dry them with a cloth. 
using a robot cleaner to clean the other side of your windows
Please note, each robot cleaner is different and will have its own instructions. Always read the specific instructions for your model before use, and consider this as a general guide only. 
 

Magnetic Sponge: 

 
Remove the sponge from the magnet and add soapy water. 
Place the sponge on the underside of the window without letting go. 
Position the magnet on the window side facing you. 
Let go of the sponge, and move the magnet to clean the window. 
 
using a magnetic sponge cleaner to clean the other side of your windows
Again, please note that every magnetic sponge is different. Read the specific instructions first before using, and only use this as a rough guide. 
 

How to clean old windows 

If your secondary glazing fully opens, you should have no trouble cleaning the original window. However, for the exterior of the old window, it’s best to hire a professional window cleaner. If you can’t reach the original window, consider using a long squeegee or a mop. 
 
Use a duster to remove dust and debris from the frames and windows. 
Use a gap brush to clear debris from the gaps in the frames. 
Vacuum any dust or debris from the gap between the two windows, as bugs and dirt may collect there during winter. 
Wipe down the gap between the windows with a cloth or sponge. 
Dry the gap with a clean cloth. 
Clean the frames and windows again with soapy water using your chosen tool. 
For tough stains, apply more pressure with a cloth or sponge with soapy water. 
Dry the frames and windows with a clean cloth. 
 
It’s important to avoid chemical cleaners and abrasive materials when cleaning old windows. Damaging them, especially if they are listed windows, could result in legal consequences. 
List of tools needed for window cleaning

Secondary Glazing Services with NRG Glass 

Now that you know how to clean secondary glazed windows, it’s time to get started. If you came here to learn how to clean them, we hope these instructions were helpful. If this has made you more inclined to purchase secondary glazing, we’re happy to offer further advice! 
 
While we don’t offer cleaning services, we specialise in installing, servicing and repairing secondary glazing. If you notice any damage to your windows, contact our team and we’ll find a solution. 
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