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Home » What Causes Drafts in Velux Roof Windows and How to Fix Them?

What Causes Drafts in Velux Roof Windows and How to Fix Them?

Velux roof windows bring natural light and fresh air into homes and create bright and welcoming spaces. If you notice cold drafts coming through your Velux windows, it can make your home feel uncomfortable and cause your energy bills to increase. 

Fortunately, a few common issues can cause most drafts in Velux roof windows. These issues are easy to identify and fix. Please check out the guide to the typical causes of drafts and simple solutions to restore comfort to your home:

What are the Common Causes of Drafts in Velux Roof Windows?

Worn-Out Seals and Gaskets

Over time, the rubber seals around your Velux window can wear out because of their exposure to sunlight, rain, and temperature changes. Cracked or flattened seals are the most common reason behind cold air seeping through the window edges.

Poor Window Installation

Whether the window was not properly installed or aligned, gaps may appear around the frame and allow drafts to enter. A small misalignment during the installation process can cause long-term draft issues.

Damaged Flashing

Flashing is the external part which keeps rain and wind out where the window connects the roof. Whether the flashing is damaged, loosened, or fitted poorly, it can allow cold air and moisture to get inside.

Blocked Ventilation Flap

Velux Roof Windows

General Wear and Tear

Likewise, any other home feature, the roof windows face natural wear and tear. Older Velux windows may require some maintenance or minor repairs to restore their energy efficiency.

What are the Easy Solutions to Fix Drafty Velux Windows?

Replace the Window Seals

If you notice cracked or brittle rubber seals, you can replace them to eliminate drafts. Velux provides replacement seal kits, and most DIY enthusiasts can replace them with basic tools.

Check and Adjust Installation Alignment

You need to check the window to ensure that it’s seated in the frame properly. If you suspect improper installation, you may require a professional Velux installer to adjust the alignment and secure the frame correctly. 

Inspect and Replace Flashing

You need to inspect the flashing from the outside regularly. You need to replace the damaged flashing to ensure waterproofing and draft prevention. Velux flashing kits are available for different models and are specifically designed for easy installation.

Clean or Repair the Ventilation Flap

You should ensure that the ventilation flap opens and closes smoothly. You need to remove debris and dust that may obstruct its movement. If the gasket around the flap is worn, you can replace it to stop cold air leaks.

Upgrade to Newer Models

If your Velux windows are older and repairs don’t fix the draft issue, you can upgrade to a newer, energy-efficient model. Modern Velux windows have improved insulation features and better seal designs.

Final Consideration

At Yorkshire Roof Windows, we believe fixing drafts in Velux roof windows doesn’t have to be complicated. We can help you identify the root cause—whether it’s worn seals, misaligned installation, or damaged flashing to fix the issue quickly and affordably. Regular maintenance and timely repairs will keep your Velux windows working efficiently, while ensuring a warm, comfy, and energy-efficient home throughout the year.

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