VELUX windows are a popular choice for loft conversions, extensions, bedrooms and other areas where you want to make the most of natural light. One of their biggest advantages is that they are designed to make cleaning the glass from inside your home relatively straightforward.
Unlike some hard-to-reach windows, many VELUX roof windows can be rotated so that the outside pane is accessible from indoors. This means you generally won’t need tall ladders or specialist access equipment just to clean the glass.
If your roof window has become covered in dust, rain marks, dirt or other deposits, a thorough clean can quickly restore a clearer view and allow more natural light into your room.
Here’s how to clean a VELUX window safely and effectively.
What Do You Need to Clean a VELUX Window?
Before you start, gather a few basic cleaning supplies. Using the right materials is important because harsh products or abrasive tools can damage the glass, frame or finishes.
For routine cleaning, you will generally need:
- A clean, soft, lint-free cloth
- A chamois leather or soft sponge
- A non-abrasive window squeegee
- Clean water
- A mild, suitable window-cleaning solution if required
- A small step ladder if you need additional reach inside the room
In many cases, clean water will be sufficient for removing everyday dirt. If the glass needs a deeper clean, use a mild window-cleaning product that is suitable for the type of glass and finish on your window.
If you live in an area with hard water, you may notice mineral deposits or chalky marks appearing on the glass. A small amount of mild detergent can help remove these deposits, but avoid using anything abrasive.
Important Things to Remember Before Cleaning
Cleaning a roof window is relatively simple, but it is still important to take care when working around the glass and operating mechanisms.
To help protect your window:
- Avoid abrasive cleaning products. Strong chemicals or abrasive substances can damage surfaces and finishes.
- Don’t use rough cleaning pads. These can leave scratches on the glass.
- Avoid metal objects coming into contact with the glass.
- Remove watches, jewellery and other sharp accessories before cleaning to reduce the risk of accidental scratches.
- Start with water. For ordinary dirt, water and a soft cloth may be all you need.
- Use mild cleaning products only when necessary.
- Don’t force the window mechanism. If the window doesn’t rotate or lock into position as expected, check the manufacturer’s instructions for your particular model.
It’s also worth checking your specific VELUX model before cleaning, as operating methods can vary between window types and generations.
How to Clean a Centre-Pivot VELUX Window
Centre-pivot roof windows are designed to rotate around a central point, making the outside pane accessible from inside your property.
1. Open the Window
Start by opening the window using the handle at the top in the usual way.
Make sure you have enough space inside the room to rotate the window safely.
2. Rotate the Window
Continue rotating the window sash until the outside pane turns towards you.
The exact movement can vary depending on the model, so avoid forcing the sash if it doesn’t move as expected.
3. Secure the Window
Many centre-pivot VELUX windows have a barrel bolt or similar locking mechanism that allows the sash to be secured in the cleaning position.
Locate the locking mechanism and position the sash according to the manufacturer’s instructions. Make sure the window is secure before you begin cleaning the outside pane.
This is particularly important because you don’t want the sash moving unexpectedly while you’re cleaning.
4. Clean the Glass
Start by wiping the glass with clean water and a soft, lint-free cloth or non-abrasive sponge.
Work across the pane gently, paying particular attention to areas where rainwater may have left dirt or mineral deposits.
For stubborn marks, use a suitable mild window-cleaning solution. Avoid applying excessive pressure or using abrasive materials.
5. Remove Excess Water
A non-metal squeegee can be used to remove excess water from the glass.
Work carefully across the pane and wipe the squeegee between passes if necessary.
Finish with a clean, dry lint-free cloth to remove remaining moisture or small marks.
6. Return the Window to Its Normal Position
Once the outside pane is clean and dry, release the locking mechanism and carefully rotate the sash back into its normal position.
Close the window securely and check that it operates correctly.
How to Clean a Top-Hung VELUX Window
Top-hung VELUX windows operate differently from centre-pivot models. However, some models incorporate a mechanism that allows the window to be positioned similarly to a centre-pivot window for cleaning and maintenance.
Because designs can vary, always check the instructions for your particular window before changing its position.
1. Open the Window Correctly
Place the handle in the appropriate position without forcing the window.
Depending on the model, there may be a mechanism or bar that allows the sash to be repositioned for cleaning.
2. Move the Window Into the Cleaning Position
Use the manufacturer’s instructions to engage the mechanism and rotate the window.
Don’t attempt to force the sash into a centre-pivot position. If the mechanism doesn’t release easily, stop and check the operating instructions.
3. Secure the Sash
Once the external pane is facing into the room, use the designated locking mechanism to hold the window securely in position.
Before cleaning, gently check that the sash is stable.
4. Clean the Outside Pane
Use clean water and a soft cloth, sponge or suitable non-abrasive cleaning tool.
Start at the top of the pane and work downwards, removing dirt and water marks as you go.
For more persistent marks, use a mild window-cleaning solution that is compatible with the glass.
5. Dry the Glass
Use a non-metal squeegee to remove excess water before wiping the glass with a clean lint-free cloth.
Take your time around the edges and corners, where water can collect.
6. Return the Window to Normal
Once cleaning is complete, release the locking mechanism and carefully return the sash to its normal operating position.
Make sure the window is properly closed and secured before using it normally again.
How Often Should You Clean a VELUX Window?
There isn’t necessarily a fixed schedule for cleaning roof windows. How often you clean them will depend on their location, surrounding environment and how quickly dirt builds up.
For many UK homes, cleaning the glass several times a year is a sensible approach.
You may need to clean your windows more frequently if:
- Your property is surrounded by trees
- There is significant pollen in the area
- The roof is exposed to heavy rainfall
- Birds frequently land around the window
- Your property is close to a busy road
- Dust or other environmental debris accumulates quickly
Regular cleaning doesn’t just improve the appearance of your windows. Keeping the glass clear also helps you make the most of daylight and your outside views.
Don’t Forget the Window Frame
Cleaning the glass is only part of maintaining your roof window.
Dirt and dust can also accumulate around the frame, seals and operating areas. Use a soft, damp cloth to remove surface dirt, taking care not to damage seals or interfere with the window’s drainage and operating components.
Avoid pouring excessive amounts of water into the frame or applying unsuitable chemicals.
If you notice damaged seals, deterioration, difficulty operating the window or signs of water ingress, cleaning alone won’t resolve the problem. In these circumstances, professional inspection may be advisable.
What Should You Avoid When Cleaning a VELUX Window?
Using the wrong cleaning products or tools can potentially cause unnecessary damage.
Avoid:
Harsh Chemicals
Strong solvents, aggressive cleaning chemicals and unsuitable products may damage the glass, frame or protective finishes.
Abrasive Sponges
Scouring pads and rough materials can scratch the surface.
Metal Scrapers
Although they can be useful for some cleaning applications, metal tools can easily scratch glass and should not be used unless specifically recommended by the manufacturer.
Excessive Pressure
There’s no need to scrub aggressively. Allow water or an appropriate cleaning solution to loosen stubborn dirt before gently wiping it away.
Forcing the Window
If your window won’t rotate, lock or close properly, don’t force it. Different models have different operating mechanisms and forcing the hardware could cause damage.
Is Cleaning a VELUX Window Safe?
One of the main benefits of many roof windows is that the external pane can be accessed from inside the property. However, you should still take sensible precautions.
If you need a step ladder, position it securely on a level surface and avoid overreaching. Keep the surrounding area clear and make sure you have sufficient space to rotate the window.
If the window is unusually high, difficult to access or has a damaged operating mechanism, consider getting professional assistance rather than putting yourself at risk.
Never lean out of a roof window or place yourself in an unsafe position simply to reach an area of glass.
What If the Window Is Difficult to Clean?
Occasionally, a roof window may have particularly stubborn marks caused by bird droppings, mineral deposits, environmental pollution or prolonged dirt accumulation.
In these situations, avoid immediately reaching for strong chemicals.
Instead:
- Wet the affected area with clean water.
- Allow the water to soften the dirt.
- Gently wipe it with a soft cloth or sponge.
- Repeat the process if necessary.
- Use a suitable mild window cleaner for persistent marks.
- Dry the glass using a non-abrasive squeegee and clean cloth.
If marks remain after cleaning, they may not simply be surface dirt. Scratches, damaged coatings or other glass-related issues may require professional assessment.
Cleaning Roof Windows After Bad Weather
The UK’s changeable weather can leave roof windows covered with rain spots, dust, pollen and other debris.
After periods of particularly heavy rain or storms, it’s worth checking your roof windows for:
- Dirt and debris
- Damaged seals
- Cracked or damaged glass
- Water marks around the frame
- Signs of moisture entering the room
- Problems with opening or closing the window
Cleaning gives you a good opportunity to inspect the window at the same time.
If you spot signs of a leak or damage, don’t simply clean the affected area and ignore it. Identifying potential problems early can help prevent more extensive damage to the surrounding roof or interior.
Keep Your VELUX Windows Looking Their Best
Cleaning a VELUX window doesn’t have to be complicated. With the right materials and a careful approach, many homeowners can clean both the inside and outside panes without needing specialist access equipment.
The key is to use clean water, soft non-abrasive materials and suitable cleaning products, while following the operating instructions for your particular window.
Regular cleaning can help keep your roof windows looking their best, maximise natural light and maintain clear views of the outdoors.
If your VELUX window is difficult to operate, shows signs of damage or appears to be allowing water into your home, cleaning may not be enough. In those circumstances, professional inspection and maintenance can help identify the underlying issue.
Enjoy a Clearer View
A clean roof window can make a noticeable difference to a room, particularly in loft conversions and spaces where roof windows provide much of the available natural light.
Set aside some time a few times a year to clean the glass, check the frame and look for any early signs of wear. With straightforward care and sensible maintenance, your roof windows can continue to provide bright interiors and clear outdoor views for years to come.