Solving the Issue of Leaky Velux Windows and Rot in Wooden Frames
Table of Contents
- Introduction
- The Issue: Leaky Velux Window and Rot in Wooden Frame
- Assessing the Condition of the Windows
- Identifying the Cause of the Leakage
- The Role of Correct Flashing Kit and Installation Instructions
- Investigating the Specific Window with Leakage
- Inside View: Water Ingress and Drips on Wooden Framing
- External Examination: Focus on the Glazing Joint
- Discovering the Cause: Breakdown of Rubber Sealant
- Fixing the Problem: Removing and Replacing the Glazing Bead
- Reassembling and Testing the Repaired Window
- Conclusion
🏠 Why Is My Velux Window Leaky and Showing Rot in the Wooden Frame?
Velux windows are often a popular choice for homeowners due to their ability to provide natural light and fresh air inside a room. However, if you find yourself facing the issue of a leaky Velux window or rot appearing in the wooden frame, it can cause concern and frustration. In this article, we will delve into the reasons behind these problems and provide you with a step-by-step guide to address the issue effectively.
Introduction
When it comes to Velux windows, proper installation and maintenance are crucial for their longevity and performance. While some windows may remain unaffected by external factors, others may cause headaches for homeowners, such as water ingress and rot in the wooden frame. Understanding the root cause of these issues can help you take appropriate steps to fix them and prevent any further damage.
The Issue: Leaky Velux Window and Rot in Wooden Frame
Before delving into the solutions, let's first comprehend the problem at hand. Leaky Velux windows that result in water ingress and rot in the wooden frame can stem from various factors. However, it is important to note that not all windows exhibit these issues, as the severity can vary depending on the age, angle, and exposure to weather conditions.
Assessing the Condition of the Windows
To accurately diagnose the source of the leakage and rot, it is essential to evaluate the condition of the windows. In our case, three Velux windows are present, with the oldest window being approximately 10 years old and the other two windows around five years old. All three windows were installed as per the manufacturer's instructions, utilizing the correct flashing kit.
Identifying the Cause of the Leakage
Upon careful inspection, it becomes evident that the leaking Velux window has a slightly steeper pitch compared to the other windows. Facing the southwest, this particular window experiences the brunt of the prevailing weather conditions. When it rains, water accumulates on the ledge inside, leading to the discovery of drips on the wooden framing.
The Role of Correct Flashing Kit and Installation Instructions
While the age and exposure of the windows can be potential factors contributing to the leakage, it is important to highlight that the correct flashing kit was used during the installation of all three windows. This adherence to the manufacturer's instructions rules out any installation errors as the primary cause.
Investigating the Specific Window with Leakage
A closer examination of the leaking window's glazing joint reveals the most probable entry point for water. The glazing profile, which holds the glass unit in place, overlaps onto the bottom capping profile. It is in this specific overlap that water can find its way into the joint, resulting in water damage to the wooden framework.
Inside View: Water Ingress and Drips on Wooden Framing
During rainfall, the source of the leakage becomes more apparent. Drips on the wooden framing occur approximately an inch and a quarter to an inch and a half from the corner, suggesting that the water has infiltrated the joint in the wooden framework. Observation from the inside confirms that the grey, water-damaged wood is the point of entry.
External Examination: Focus on the Glazing Joint
Upon further inspection from the outside, the joint between the bottom capping profile and the glazing profile emerges as the primary pathway for water ingress. The bottom capping profile acts as a barrier to prevent water from seeping into the window. However, if the seal between these two profiles is compromised, water can easily penetrate the joint.
Discovering the Cause: Breakdown of Rubber Sealant
The investigation reveals that the breakdown of the rubber sealant, specifically in the area where the glazing bead overlaps onto the bottom capping profile, is the cause of the leakage. The black bitumastic material, which serves as a sealant between the glazing bead and the glass, remains intact where it is in contact with the glass. However, in the overlapping region, the rubber has deteriorated, resulting in a failed seal.
Fixing the Problem: Removing and Replacing the Glazing Bead
To address the issue, it is necessary to remove the glazing bead on the three sides of the window. This process involves opening the window and unscrewing the fasteners. Once the glazing bead is removed, any remnants of the black bitumastic material are comprehensively cleaned using a scraper and white spirit. After ensuring a clean surface, a bead of silicone sealant, preferably clear, is generously applied in all the relevant areas, emphasizing the bottom corners. Additionally, silicone sealant is applied under all the screw heads before reassembling the window.
Reassembling and Testing the Repaired Window
With the glazing bead replaced and the window reassembled, the repaired window is ready to face the test of a storm and rainfall. The ultimate goal is to prevent any water ingress and ensure a completely dry interior. Recent storms have put the window to the test, and the positive outcome indicates that the problem has been successfully resolved.
Conclusion
In conclusion, understanding the reasons behind a leaky Velux window and rot in the wooden frame is crucial for taking appropriate steps to address and resolve the issue. By identifying the specific cause, such as a breakdown in the rubber sealant, and effectively replacing the glazing bead with silicone sealant, homeowners can restore the functionality of the window and prevent further damage. In doing so, the joy of having a Velux window that illuminates and ventilates the space can be fully relished once again.
Highlights
- Leaky Velux windows and rot in the wooden frame can cause significant problems for homeowners.
- Proper installation, maintenance, and identifying the root cause are essential for addressing these issues effectively.
- The correct flashing kit and adherence to installation instructions are crucial factors in preventing leakage.
- Investigating the specific window with leakage helps pinpoint the precise entry point.
- Breakdown of the rubber sealant in the joint between the glazing profile and the bottom capping profile is often the cause of water ingress.
- Removing and replacing the glazing bead with silicone sealant can effectively resolve the issue.
- Thorough testing after repair ensures a dry and functional Velux window.
Frequently Asked Questions (FAQs)
Q: How can I determine if my Velux window is leaking?
A: Signs of water ingress, such as dampness or water stains on the plaster or wooden framing, are indications that your Velux window may be leaking.
Q: What causes rot in the wooden frame of a Velux window?
A: Rot in the wooden frame can occur due to prolonged exposure to moisture from a leaky window. The presence of water can lead to the growth of mold and fungus, resulting in wood decay.
Q: Are all Velux windows prone to leakage?
A: Not all Velux windows are prone to leakage. The severity of the issue can vary depending on factors such as the age, angle, and exposure of the window to weather conditions.
Q: Can I fix a leaky Velux window on my own?
A: With the proper guidance and necessary precautions, it is possible to fix a leaky Velux window. However, if you are unsure or uncomfortable with the repair process, it is advisable to seek professional assistance.
Q: How often should I inspect and maintain my Velux windows?
A: Regular inspection and maintenance of Velux windows are recommended at least once a year. This helps identify any potential issues and ensures the longevity and optimal performance of the windows.
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