How to Fix a Leaking Velux Window

When installed correctly, by a specialist, velux windows are a durable, energy efficient investment, which will last for many years to come.

Velux windows are very popular additions to a property, and are a fantastic way to increase the usability of your roof and attic space.

However, if they are not sufficiently maintained or were not correctly installed, then velux windows can incur some flaws. Leaking is one of the most common issues in velux windows, and this is when water is allowed to seep through the window from the outside, compromising your property’s thermal efficiency and increasing the risk of damp.

So, in this article, we’ve explored the most common causes of leaks in velux windows. Keep reading to find out how you can identify where the leak is coming from, quick ways to fix the issue, and our advice for when it is best to call a repair specialist.

What are the most common causes of leaks in velux windows?

The most common causes of a leak in a velux window are:

• Cracks in the glass
• Chips in the glass
• Damage, cracking or loosening to the flashing (which seals the gap between the wall
• Incorrectly installed flashing
• Blockages in the window’s drain channels
• Damaged rubber seals (which sit around the window pane)
• Old rubber seals, which have reached the end of their lifespan
• General flaws or inaccuracies in the installation

How can you identify where the leak is coming from?

If you do spot a leak in the window, then you will need to try and identify what is causing the issue (so you can take the right corrective action).

You can find the source of the window leak by following these steps:

• Look for any water stains, drips or areas of dampness. If you do spot these signs, use this to try and narrow down the affected area.
• Check the flashing around the window, looking for any signs of damage, cracks or peeling.
• If you don’t see any damage to the flashing, check the seals for any gaps or tears. You can do this by touching the flashing, and feeling for any irregularities.
• If you can’t find any of these issues, wait till it is raining outside. Then, watch the window, and identify the exact point where the leak is seeping through.

DIY methods for fixing leaks in velux windows

If the leak is serious, or causing extensive damage, then you should contact a window repair specialist. They will quickly fix the problem, and prevent any similar issues from reoccurring, before the damage escalates.

However, if you only have a small leak, then you can try some quick DIY methods for fixing the issue.

We recommend trying the following methods:

• Clearing the window’s drain channels (using a soft cloth)
• If you spot any gaps in the window’s flashing, apply a waterproof sealant to these gaps
• Remove any worn window seals, and replace them with a new seal
• If you have a small crack in the window pane, then you can temporarily fix the glass using a sealant glass repair kit

BS Roofing offers a comprehensive range of services, including velux window repairs. Our skilled team are fully accredited, and all of our work comes guaranteed.

To find out more about our services, or to enlist our team to repair your velux window, don’t hesitate to get in touch.