Efficient solutions for fixing blown double glazing

When it comes to fixing blown double glazing, it's important that trade professionals and homeowners understand technical aspects and cost-effective solutions to achieve a full repair.

This comprehensive guide will explore the causes, solutions, and preventative measures for dealing with failed double glazing units, helping you deliver expert service to your customers.

Understanding Blown Double Glazing

Blown double glazing occurs when the seal between two glass panes fails, allowing moisture to penetrate the cavity. This results in internal condensation between the panes, creating that distinctive cloudy or misty appearance that affects both visibility and the energy efficiency of your windows. Understanding this issue is crucial for maintaining a home's thermal performance and providing appropriate solutions.

Common Causes of Seal Failure

Several factors can contribute to double glazing failure. Strong winds and dramatic temperatures, such as cold air fluctuations, put stress on window seals, while poor installation or manufacturing defects can lead to premature failure. Older windows are particularly susceptible, especially those beyond their 20-year expected lifespan. Understanding these causes helps in recommending appropriate solutions and preventative measures.

Older windows can be particularly susceptible to damage.

Professional Repair Options

For trade professionals, there are several approaches to fixing blown double glazing. The most appropriate solution depends on factors including the window unit age, the condition of the window frame, and the extent of the damage.

Glass Unit Replacement

When dealing with a failed sealed unit, replacing just the glass unit is often the most cost-effective solution, especially when compared with a complete replacement of the windowpanes. This approach works well when the existing frame is in good condition and involves removing the old glass unit and installing a new, thermally efficient spacer bar and sealed unit.

Complete Window Replacement

In cases where the window frame shows significant wear or damage, an entire window unit replacement might be necessary. While this carries higher replacement costs, it provides an opportunity to upgrade to more energy-efficient systems that offer better insulation and noise insulation.

Seal Repair Techniques

For minor issues, professional seal repair might be viable. This involves carefully resealing the unit's edges and potentially recharging the gas filling. However, this solution isn't always permanent and might not be suitable for severely damaged units.

Energy Efficiency Considerations

When advising clients on double glazing repairs, energy efficiency should be a key consideration.

Failed units can significantly impact heating bills and the overall efficiency of your windows.

Modern replacement units often feature improved thermal performance through advanced spacer bars and better gas fills, the best way to improve your home's energy efficiency.

Cost Implications

Trade professionals should be prepared to discuss various cost scenarios with clients. While complete window replacement carries the highest upfront cost, it might prove more economical in the long term through improved energy efficiency and reduced maintenance needs. Unit replacement offers a much cheaper alternative when frames are sound.

Preventative Measures

Advising clients on preventative maintenance can help extend the life of their double glazing. Regular inspection of seals, proper ventilation, and prompt attention to any signs of failure can prevent more serious issues from developing.

Guidance for Homeowners

For homeowners experiencing issues with blown double glazing, whether it be a ventilation problem, a small hole, misty windows, etc, the most important thing is to address the problem promptly. Early intervention can prevent further deterioration, an increased cost of any repairs, and higher energy bills. While some might consider DIY solutions, professional repair or replacement typically offers the best long-term value and performance. At True Windows and Glass, we offer an industry-leading 24/7 glazing repair service, where we can sort out seals, repair and replace misted units, and even install new shop fronts.

About True Windows and Glass

True Windows and Glass are specialists in domestic and commercial glazing solutions across Lincolnshire.

With over 40 years of experience, we provide comprehensive window and door services, including emergency repairs, installations, and maintenance.

As a FENSA-registered company with GGF membership, we guarantee high-quality workmanship and professional service. For expert assistance with your glazing needs, contact us on 01522 500892 or our out-of-hours number 07823 341559.

Our team serves clients across Woodhall Spa, Newark, Gainsborough and surrounding areas, providing 24/7 commercial glazing repairs and comprehensive glazing solutions for both domestic and commercial properties.