FAQ

Looking to learn more about NanoShield’s window film solutions? Our FAQs cover everything you need to know—from installation and product care to compatibility and performance.

Does window film affect double-glazed windows?

No, window film does not negatively affect double-glazed windows when applied correctly. It can enhance their performance by improving insulation, reducing heat buildup, and blocking harmful UV rays.

Window film is a thin layer of polyester or other durable material that is added to glass windows to enhance their functionality by rejecting heat and UV. The importance of sun-control window film cannot be overstated in modern homes. The benefits of sun-control window film are essential for maintaining comfort in HDB homes. The application of sun-control window film plays a crucial role in energy efficiency.
When fitted on the correct type of double-glazed window, sun control window films help to regulate room temperature by filtering solar heat gain and unpleasant glare—your room is even more energy-efficient. Moreover, window films can shield up to 99% of the harmful UV rays, saving furniture and flooring from fading and eliminating expensive replacements. If you install sun-control window film in your home, you can make a wiser purchase of HDB window furniture that will not fade under the sunshine.
However, double-glazed glass would require the correct purchasing of film. There are thermal stress problems that cause certain types of windows to crack, and you can beat breakage with too-high solar absorption on certain films. To avoid this problem, you can also consult a professional installer who would be able to recommend the right type of film for your double-glazed windows. Installation done properly will ensure that the glass will achieve maximum performance and durability without being damaged in any kind.

Can window film reduce visibility?

Yes, depending on the type and hue, window film can yield a full range of privacy options for its customers. Darker shades and reflective films will give you the complete, exacting privacy that is so difficult to obtain.

Many of the films you’ll encounter on Singapore’s windows are used not only to shield a space from outsiders’ prying eyes but also to let in natural daylight. Tinted films, reflective films, and frosted window films are particularly popular in urban settings like Singapore for their aesthetic and functional benefits. Frosted glass film offers different levels of privacy, especially when considering the options available in Singapore. Similarly, darkly-tinted or mirrored film blocks the outsider’s view but also means that less light enters the room.

If privacy is a concern, choosing a tinted or reflective film with a higher percentage ensures that you maintain some degree of confidentiality; outsiders can’t look into your house or depot. Selecting a product with the right level of light transmission for your particular requirements is important to fulfil your wishes totally while maintaining some degree of privacy between yourself and the outside world.

Can I install the window film myself?

Although it is possible to install window film by yourself, it is best to have it put on professionally. Improper application can lead to bubbles, wrinkles, or poor adhesion.

For those with a little prior experience, applying film to windows themselves is relatively cheap. But there are some difficulties involved. The job includes extensive window cleaning; and measuring of the film, which must be installed smoothly without wrinkles or bubbling at each crease point in the installation process.

There are quite a few DIY kits online, but most people prefer to hire specialists for subtle window film installation. This allows the film to bond perfectly and reduces the risk of any gaps or defects. They are also able to recommend what type of window film you’ll need the most—heat reduction, UV protection, and/or increased privacy.

What is window film?

Window film is a thin, adhesive layer applied to glass surfaces to improve privacy, reduce heat, block UV rays, and enhance security, particularly when using the prestige series. It is available in various types, including tinted, reflective, frosted, and safety films for residential, commercial, and automotive use. 

Additionally, window films are easy to clean and resistant to water stains, making them a low-maintenance solution for reducing energy costs. This can include:

  • Heat reduction is a significant benefit of window films in Singapore.
  • UV protection,
  • glare reduction,
  • privacy enhancement, and
  • security.

It prevents infrared radiation from helping cool the inside and filters out 99% of damaging UV rays, which helps protect the skin and keep furniture from fading. In addition to helping to diminish visibility to avoid eye strain against too much sun exposure, frosted, mirrored, or tinted films also offer important elements of privacy by impairing vision from the outside.

If the glass shatters, window film reinforces and holds the shattered glass, making it a must-have for HDB window safety. From professional installation to DIY options, they are also an affordable alternative to window replacement. According to your demand, they are also called in new custom shades, designs, and transparencies.

How does window film work?

Window film works by modifying how light and heat interact with glass surfaces, reducing heat, blocking UV rays, and enhancing privacy. It consists of multiple layers that either reflect, absorb, or filter sunlight to improve comfort and energy efficiency.

The window film consists of polyester or other robust elements and can have reflective metallic, ceramic, or dye-based coatings on top. Here’s how it functions:

  • Heat Reduction – Solar film absorbs or reflects infrared radiation, reducing the temperature inside the building and saving on cooling costs.
  • UV Protection – It blocks up to 99% of UV rays, which protects furniture, flooring, and skin from damage.
  • Glare Reduction – Alleviates an abundance of sunlight, allowing for clearer screens.
  • Privacy Control – Both tinted films are the best in blocking out heat and UV rays.  Frosted or one-way mirror films obscure the ability to see out.
  • Security & Safety – Lamination process means glass cannot shatter. Also acts as a deterrent against being broken into.

Window films come in a range of specifications for light transmission, reflectivity, and insulation, making them suitable for homes, offices, and cars. They will be used as a self-adhesive or static-cling layer that shows no effect on the appearance of glass and is expected to last long in surface coating.

How do I clean the window film?

To clean window film, use a soft microfiber cloth or sponge with a mild, ammonia-free cleaning solution. Avoid using abrasive materials or harsh chemicals that could damage the film.

While window film is easy to clean, you need to do it with caution to maintain its transparency and durability. For optimal results, follow these steps:

  1. Use Gentle Cleaner
  • Prepare a solution of warm water and a few drops of mild dish soap, or use a dedicated window film cleaner.
  • Avoid ammonia-based products, as these can, over time, break down the adhesive.
  1. Soft Cloth or Sponge
  • Use a microfiber cloth or a soft sponge to wipe the window film clean of dust and smudges, keeping your home window pristine.
  • Never scrub hard, and don’t use paper towels as these can scratch the surface.
  1. Spray and Wipe
  • Lightly spray the cleaning solution onto the film and gently wipe it in a circular motion.
  • Avoid soaking the film edges to prevent peeling.
  1. Wipe Dry
  • Use a dry microfiber cloth or rubber squeegee to wipe away excess moisture and avoid streaks.

Regular cleaning will keep your window film clear and look new while improving its protective properties. When in doubt, consult the manufacturer’s care instructions for your specific film type.

How long does it take to dry?

Window film typically takes 3 to 30 days to fully dry, depending on factors such as humidity, temperature, and the type of film used. During this time, some haze, bubbles, or a slightly cloudy appearance may be visible, but these will disappear as the film cures.

The drying time for window film varies depending on environmental conditions and the thickness of the film. Here’s what to expect:

Typical Drying Time

  • Most films dry in 3 to 7 days in dry indoor conditions.

Humid or Cold Weather

  • Drying can take up to 30 days in high humidity or cold weather since moisture evaporates more slowly.

Bubbles & Haze

  • Small bubbles and a hazy appearance are normal and will disappear as the adhesive cures.

Do Not Disturb the Film

  • Avoid cleaning or interfering with the film during the curing period, as this can interrupt adhesion.

For optimum results, allow sufficient drying time to see the final appearance. If bubbles persist beyond the first 30 days, contact your installer to check for potential issues.

How do I take accurate measurements of my windows?

To measure your windows for window film, use a steel tape measure and record the width and height in inches or centimetres. Always measure at least twice to ensure accuracy, and add an extra 1/2 inch (1.3 cm) on each side for trimming during installation.

Accurate measurements are essential for a perfect fit for your window film. To get the right answer, follow these steps:

Measure by Hand

  • Trusted Tools: A steel tape measure is more accurate than a ruler or fabric tape.

Dimension Width First

  • Measure the glass from the outside edge to the other outside edge, just inside the frame, at the widest point. Write down the measurement.

Base

  • Measure the height from the top to the bottom of the visible glass area inside the frame.

Double-check Measurements

  • Measure at least twice to ensure accuracy, especially with older windows that may not be perfectly square.

Consider for Trimming

  • Add 1/2 inch (1.3 cm) on each side for trimming during installation, allowing for a seamless edge fit.

For large or uniquely shaped windows, consult a professional installer to minimise mistakes and achieve the best results.

Can you apply window film on any type of glass?

Window film can be applied to most types of glass, but not all. Standard clear glass, tempered glass, and laminated glass are generally safe, while low-E (low emissivity) glass, wired glass, and some double-glazed windows require special consideration to prevent damage.

Although window film options are versatile, some types of glass may have restrictions. Clear glass is compatible with all forms of window film, and tempered glass is suitable for most window films, including security and privacy films. Laminated glass is also film-safe, but it’s good to check the manufacturer’s guidelines.

Glass types may also require additional considerations. Be sure to select window film designed for Low-E glass, as applying incorrect film can diminish energy efficiency. Applying certain films may cause the wired glass to overheat and crack. High solar absorption films can cause thermal stress and glass breakage, so double-glazed windows should be treated with films designed for insulated glass units (IGUs).

To ensure optimal film performance before application, assess the glass and consult a professional installer to confirm you’re using the correct film for your specific glass and to avoid thermal stress or glass damage. 

Is window film suitable for bathrooms?

Yes, window film is an excellent choice for bathrooms as it enhances privacy, reduces glare, and prevents UV damage while allowing natural light to enter, effectively rejecting heat and glare. For wet environments, opt for moisture-resistant films to ensure durability.

For bathrooms, frosted, decorative, or tinted window film offers privacy without blocking light. Window film conceals objects from outside while still allowing light through. Moisture-resistant types are specifically designed for humid areas to minimise the risk of peeling and blistering. They also provide UV and heat protection by blocking damaging UV rays, helping to reduce fading of bathroom fixtures and excessive heat.

Additionally, window films are easy to clean and resistant to water stains, providing a low-maintenance solution. When using film for shower enclosures, ensure it’s rated for constant exposure to high moisture. If applying over textured glass, confirm compatibility, as not all films adhere well to uneven surfaces. The right moisture-resistant window film enhances functionality, aesthetic features, and privacy.

Does window film provide privacy at night?

Standard reflective window film provides daytime privacy but does not work at night when indoor lights are on; however, sun control window film can offer better options for privacy at all times. For 24/7 privacy, use frosted, blackout, or decorative films instead.

Reflective films create a one-way mirror effect, meaning they block visibility during the day by reflecting light. However, at night, when interior lights are brighter than outdoor lighting, the effect is reversed, making indoor spaces visible from the outside.

For full-time privacy, frosted window film is a great option, as it blurs visibility while still allowing natural light in. Blackout window film completely blocks both light and visibility, ensuring maximum privacy. Decorative films with patterns or textures can also enhance privacy while adding an aesthetic touch.

Reflective films do not provide nighttime privacy unless outdoor lighting is significantly brighter than indoor lighting. Tinted films can reduce visibility but do not fully block views at night. If privacy is a priority, choosing an opaque or frosted film ensures uninterrupted coverage, or you can use curtains or blinds at night for extra security.

How long does the window film last, and can it be removed?

High-quality window film typically lasts 5 to 15 years, depending on the type, exposure to sunlight, and maintenance. Yes, window film can be removed safely without damaging the glass, especially when using the right techniques.

Lifespan of Window Film:

  • Standard Films (Tinted, Privacy, Decorative) – Last 5 to 10 years with proper care. 
  • Premium Films (Solar, Security, UV Protection) – Can last up to 15 years due to advanced materials and coatings. 
  • Factors Affecting Lifespan – Exposure to UV rays, heat, and moisture can impact durability. Proper installation ensures a longer lifespan. 

How to Remove Window Film:

Yes, window film can be removed using these methods:

  1. Heat Method – Use a hairdryer or heat gun to soften the adhesive, then peel off the film. 
  2. Soapy Water & Razor Blade – Spray soapy water on the film and gently scrape it off with a plastic scraper or razor blade. 
  3. Adhesive Remover – If residue remains, clean the glass with a mild adhesive remover or rubbing alcohol.
  4. Avoid Forceful Peeling – Pulling the film off too aggressively can leave sticky residue behind, making removal harder.

If unsure, professional removal services can ensure a smooth, damage-free process.

Can window film help with heat reduction?

Yes, window film is highly effective in reducing heat from the sun, making your indoor environment more comfortable and reducing air conditioning costs.

One of the primary benefits of window film is its ability to block solar heat gain. The film works by reflecting or absorbing infrared radiation, which is responsible for the majority of heat entering through windows. By installing high-performance heat-reducing solar window films, you can significantly reduce the temperature inside your home or office, especially during hot months. 

This can reduce the load on air conditioning systems, leading to energy savings. In addition, it helps prevent heat damage to furniture, flooring, and electronics. For best results, consider films specifically designed for heat rejection, as these will provide the most noticeable reduction in indoor temperatures.

How do I clean my windows after the film has been installed?

To clean windows with film, use a soft microfiber cloth or sponge with a mild, ammonia-free cleaning solution. Avoid abrasive tools or harsh chemicals that could scratch or weaken the film.

Proper cleaning maintains the clarity and longevity of your window film. Follow these steps for the best results:

  1. Wait Before Cleaning – Allow the film to cure for at least 30 days before the first cleaning to ensure proper adhesion. 
  2. Use a Gentle Cleaner – Mix warm water with a few drops of mild dish soap, or use a commercial window film cleaner. Avoid ammonia-based products, as they can cause discolouration or damage. 
  3. Soft Cloth or Sponge – Wipe the surface gently using a microfiber cloth, soft sponge, or rubber squeegee to prevent scratches. 
  4. Avoid Excess Water – Do not oversaturate the edges of the film to prevent peeling. 
  5. Dry with a Lint-Free Cloth – Use a dry microfiber cloth to remove any streaks or watermarks.

What to Avoid:

  • Paper towels, rough sponges, or scrub pads – These can cause scratches. 
  • Strong solvents like vinegar or ammonia – These can degrade the film over time.

With proper cleaning, sun control window film remains clear, durable, and effective for years, making it a great investment for any home.

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