Generally speaking, Gila window film is safe for double pane windows if the proper type of film is selected and professionally installed. Incorrect film choice or improper installation can, however, lead to thermal stress fractures and seal failures in double pane windows. This article explores the nuances of using Gila window film on double pane windows, offering guidance and answering common questions.
Understanding the Risks and Benefits
Double pane windows, also known as insulated glass units (IGUs), are designed with a sealed air or gas space between two panes of glass. This insulation reduces heat transfer, improving energy efficiency. Applying window film, especially darker or more reflective varieties, can alter the way a window absorbs and reflects solar radiation. This can lead to significant temperature differentials between the inner and outer panes, potentially stressing the glass and the seal.
However, Gila offers a range of films, including specifically designed dual-reflective and low-e films that are suitable for double pane windows. These films are designed to reflect more solar energy externally while allowing more visible light to pass through, thus minimizing heat buildup and reducing the risk of thermal stress.
The benefits of using Gila window film are numerous. They include:
- Reduced Glare: Improves visibility and comfort.
- Heat Rejection: Lowers energy bills by reducing the need for air conditioning.
- UV Protection: Protects furniture, flooring, and fabrics from fading.
- Increased Privacy: Provides a degree of obscurity, depending on the film type.
- Enhanced Aesthetics: Can improve the look of your home or office.
Choosing the Right Gila Window Film
The key to safely using Gila window film on double pane windows lies in selecting the appropriate product. Consult the manufacturer’s specifications to determine if a particular film is compatible with IGUs. Gila’s website and product packaging typically provide this information. Look for films specifically labeled as being suitable for double pane windows, especially those that are dual-reflective or designed for low-e glass.
Understanding Film Properties
Several factors contribute to a film’s compatibility with double pane windows:
- Solar Heat Absorption: The amount of solar energy absorbed by the film. Lower absorption is better for IGUs.
- Solar Heat Reflectance: The amount of solar energy reflected by the film. Higher reflectance helps reduce heat buildup.
- Visible Light Transmittance: The amount of visible light that passes through the film.
- Emissivity: A measure of a material’s ability to radiate heat. Low-e films have low emissivity and help improve energy efficiency.
Films with high solar heat absorption should generally be avoided on double pane windows, particularly those with tinted or low-e glass. These films increase the risk of thermal stress and seal failure.
Professional Installation is Crucial
Even with the correct film choice, professional installation is highly recommended. Experienced installers understand the nuances of applying window film to double pane windows and can ensure proper adhesion and minimize the risk of air bubbles or other imperfections that could exacerbate thermal stress. They can also assess your window type and advise on the most suitable film for your specific needs. Improper installation can void warranties and increase the likelihood of problems.
Frequently Asked Questions (FAQs)
Here are some frequently asked questions to help you further understand the complexities of using Gila window film on double pane windows:
FAQ 1: What happens if I use the wrong type of window film on my double pane windows?
Using the wrong type of window film, especially one with high solar heat absorption, can lead to thermal stress fractures in the glass. The temperature difference between the inner and outer panes can exceed the glass’s tolerance, causing it to crack or shatter. It can also compromise the integrity of the window seal, leading to fogging between the panes and eventual window failure.
FAQ 2: How can I tell if a Gila window film is safe for my double pane windows?
The best way to determine if a Gila window film is safe for your double pane windows is to consult the product specifications on the packaging or the manufacturer’s website. Look for clear statements indicating that the film is suitable for use on IGUs. Also, consider the film’s solar heat absorption rating. Lower absorption is generally safer for double pane windows. Contact Gila’s customer service for clarification if needed.
FAQ 3: Does the color of the window film affect its suitability for double pane windows?
Yes, the color of the window film can affect its suitability. Darker films tend to absorb more solar heat, making them potentially less suitable for double pane windows. Lighter or reflective films that reject more solar energy are generally a safer choice.
FAQ 4: What is thermal stress fracture, and why is it a concern?
Thermal stress fracture occurs when a window pane experiences significant temperature differences across its surface, causing stress and potentially leading to cracks or shattering. This is a major concern when applying window film to double pane windows because the film can alter the way the window absorbs and reflects solar radiation, exacerbating temperature differentials.
FAQ 5: Can Gila window film void my window warranty?
Yes, applying window film, even a Gila product marketed as safe for double pane windows, can potentially void your window warranty. Check the terms of your window warranty before applying any film. Some manufacturers may specifically exclude damage caused by aftermarket window film application.
FAQ 6: Is professional installation always necessary?
While it’s possible to install Gila window film yourself, professional installation is highly recommended for double pane windows. Professionals have the experience and expertise to properly assess your window type, select the appropriate film, and install it in a way that minimizes the risk of thermal stress or seal failure. They also often offer warranties on their work.
FAQ 7: How does Gila window film protect against UV rays, and what are the benefits?
Gila window film typically incorporates a UV-absorbing layer that blocks up to 99% of harmful ultraviolet (UV) rays. This protection helps prevent fading of furniture, flooring, and fabrics, as well as reducing the risk of skin damage from prolonged exposure to sunlight.
FAQ 8: Can I use Gila window film on low-e glass?
Yes, but you need to select a film specifically designed for low-e glass. Standard window films can interfere with the low-e coating’s effectiveness and increase the risk of thermal stress. Look for Gila films that are explicitly labeled as safe for low-e windows.
FAQ 9: What is the difference between dual-reflective and standard window films?
Dual-reflective window films are designed with a highly reflective outer layer to reject solar heat and a less reflective inner layer to allow more visible light to pass through. This combination helps minimize heat buildup while maintaining good visibility. Standard films typically have a uniform reflective property across both surfaces.
FAQ 10: How long does Gila window film typically last?
The lifespan of Gila window film varies depending on the product type, environmental conditions, and installation quality. Generally, you can expect Gila window film to last 5 to 10 years or longer. Proper maintenance and cleaning can extend its lifespan.
FAQ 11: What are the best cleaning practices for windows with Gila window film?
To clean windows with Gila window film, use a soft cloth or sponge and a mild soap and water solution. Avoid abrasive cleaners, scouring pads, or sharp objects, as these can scratch or damage the film. A squeegee can be used to remove excess water.
FAQ 12: Where can I find a qualified Gila window film installer?
You can find qualified Gila window film installers by searching online directories, contacting Gila directly for referrals, or checking with local window treatment companies. Look for installers with experience working with double pane windows and a good reputation. Requesting references and checking online reviews can also help you make an informed decision.