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Window Insulation Film - What It Is & Film Installation


Window Insulation Film – What It Is & Film Installation

Myles Robinson
Written by Myles Robinson
Updated on 21st February 2024
Posted on 5th January 2024

Insulating Window Film Guide

Window Insulation Film

Does window insulating film actually conserve energy and maintain comfortable home temperatures? Absolutely.

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In our expert guide, we unpack the effectiveness of insulating film for windows, its installation process, and the options available for various window types. Discover the straightforward steps to potentially lower energy bills and boost indoor comfort.

Thermal Window Film - In Summary

  • Window insulating film provides an economical way to enhance the thermal insulation of glass windows, leading to consistent indoor temperatures and reduced energy bills while also diminishing greenhouse gas emissions.
  • There are specialised types of insulating film for single, double, and triple-pane windows, each optimised for different levels of insulation and benefits such as UV protection, heat retention, and noise reduction.
  • Proper installation and maintenance of window insulating film is important for maximising energy efficiency and preventing issues such as mould growth; commercial buildings especially can achieve significant long-term energy savings and quick cost recovery with film insulation.

Understanding Window Insulating Film

Before we tell you about different types of insulation or how to install it, we will introduce you to what it actually is, just so you can get a better idea of whether you need it or not.

Insulating window film is a smart and cost-effective solution that can revolutionise the way we manage indoor temperatures. This insulating film, when applied to glass windows, offers an additional layer of thermal insulation, reducing heat gain during summer and heat loss in winter.

Using window films ensures a consistent indoor environment throughout the year, leading to significant reductions in energy bills.

The film is transparent and virtually unnoticeable once applied, allowing you to continue using your windows as usual without any obstruction. There is a broad range of window insulating films available in the market, each designed to meet specific needs.

For instance, secondary glazing film, such as Low-E and 3M Thinsulate films, provide improved insulation performance, blocking up to 70% of solar heat gain and enhancing energy efficiency.

In essence, window insulating film is a versatile solution that not only improves the comfort of your home or office but also contributes positively to the environment by reducing energy consumption and greenhouse gas emissions.

There are different types of window films that are designed for specific purposes. For example, privacy window film will also help improve energy efficiency, but is mainly manufactured to block looking through the window inside, giving you more privacy and peace.

Types of Window Insulating Films

Now, I'm sure you're thinking, "that sounds great!", but there are a few more things you should know about before rushing to make the purchase, such as types of insulating window film.

A variety of window insulating films cater to different needs. They range from films for single-pane windows to those designed for double and triple-glazing units. Each type is engineered to improve insulation and energy efficiency in its unique way.

We will examine each type in detail below.

Single Pane Window Insulating Film

Single-pane windows are commonly found in older buildings. While they may add a vintage charm, they, unfortunately, lack insulation. That’s where single-pane window insulating film comes in.

It significantly increases heat retention by up to 40% and retains up to 55% more heat during winter, resulting in reduced energy usage and improved insulation for your home.

One remarkable feature of the single pane window insulating film, specifically designed for single pane glass window frames, is its ability to:

  • Block nearly all UV rays
  • Serve as a protective barrier, safeguarding your interior from the detrimental impact of UV radiation
  • Prolong the life of your furnishings and furniture

Type 1 (EC100) thermal window film is recommended for single glazing. You can easily install it using just double-sided tape, scissors, and a hairdryer to ensure a better seal.

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Double Glazing Window Insulation Film

Double-glazed windows, also known as double-glazing windows, are increasingly becoming popular due to their enhanced insulation properties.

However, the application of window insulation film can further enhance these properties by creating a thermal barrier that reflects heat back into the room, thereby preventing heat loss and improving insulation.

This can also be applied to doors if you are insulating a front door in your home.

Before applying heat-reducing film to double-glazed windows, certain measures need to be taken. Ensure that the internal pane of the double-glazed unit is made of toughened glass by checking the kite mark.

Also, select film designed for external use as double-glazed units can retain heat within the panes, functioning like large radiators.

To apply the heat-reducing film, simply spray the glass and the adhesive side of the film with a mild soapy water solution. Use a squeegee to adhere the film to the glass, smoothing it out to eliminate any residual water and ensure a proper seal.

Triple Glazing Insulation Film

For the highest level of insulation and energy efficiency, a triple-glazing insulation film is the way to go. Designed to enhance the thermal and sound insulation of triple-glazed windows, it is an ideal solution for colder climates and high-performance buildings.

Man Covering Window with Insulating Film

Triple glazing insulation film offers superior insulation compared to single and double glazing. This is due to the inclusion of a gas layer and iron oxide film between the glass panes, which contribute to its enhanced efficiency.

In addition to this, triple-glazed insulation film will also be stronger and more durable than double glazing film, although window security film might be the best option if you are looking for protection.

In colder climates, it offers benefits such as reduced energy consumption, lower carbon footprint, improved interior comfort and warmth, and decreased noise transmission.

Beyond residential buildings, triple glazing insulation film also finds application in:

  • High-performance commercial buildings
  • Buildings that need to surpass Building Regulations standards for energy efficiency
  • Buildings that require superior sound insulation compared to double glazing, with up to 30% more effectiveness
  • Buildings that need UV protection to prevent interior fading and damage.

To find out more about the triple glazing cost in the UK for your home, you can check out our guide.

Insulating Film Installation and Maintenance

Like most things in your home, you will get this insulation fitted and keep it maintained to get the very best out of it, which is what we all want.

The installation of insulating film is quite straightforward. Here are the steps to follow:

  1. Start by cleaning the window surface with isopropyl alcohol or another cleaning solution.
  2. Unroll the adhesive window film with the adhesive side facing up.
  3. Apply the film to the window, ensuring it’s properly adhered to the window frame without gaps where air could escape.

Maintaining the film after installation is also important. It involves cleaning with a mild solution, such as a mix of baby shampoo and cold water. Harsh chemicals or abrasive materials should be avoided, as they could potentially damage the film.

However, keep in mind that trapped moisture may cause condensation between the window and the film, which could potentially lead to mould growth and damage to window seals. Using correct installation methods is key to stopping condensation on windows.

Impact of Insulating Film on Energy Efficiency

Efficiency is one of the most common things mentioned when speaking about household installations and furniture, and there's a reason why!

Energy efficiency means that you won't be using as much energy throughout the day or won't lose as much heating, which can save you money.

Insulating film significantly influences energy efficiency. Minimising heat loss through windows and enhancing insulation significantly lowers energy consumption, leading to substantial energy savings. Often, the film is able to recoup its investment within a short timeframe.

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The insulation performance of window film is sustained by its ability to keep heat out in the summer and lock the heat in during the winter. Solar control films offer an added layer of insulation in colder months, reducing energy waste and decreasing heating expenses.

In the UK, there are government window grants available for those looking to insulate and improve the energy efficiency of their windows, although this included double-glazed windows rather than insulation film. Still, window insulation film is a great addition to your home and will further enhance the energy-saving ability of any property.

Commercial buildings particularly benefit from window film insulation because:

  • It is durable, lasting up to 12 years
  • It provides significant long-term benefits
  • It has a quick cost recovery, especially given high energy costs and variable revenue

This makes window film insulation a sound investment for commercial buildings.

UV Protection and Glare Reduction for Insulation Film

Insulation film offers several benefits, including:

  • Temperature control
  • UV protection
  • Glare reduction
  • Blocking 99% of ultraviolet radiation protects the interior against harmful UV rays and prolongs the life of furnishings and furniture.Insulating Window with Insulation Film

Tinted or heat-reflective window film can effectively diminish glare from sunlight, allowing a pleasant level of natural light to penetrate indoor spaces while reducing radiant heat. This enhances their suitability for different activities.

By regulating the amount of sunlight that enters through windows, insulation film helps control indoor temperatures and reduces the workload on heating, ventilation, and air conditioning (HVAC) systems.

Customising Insulating Film Solution

We all love freedom of choice, don't we? Well, there is a range of different insulating window film solutions to pick from for your home.

You have the option to choose either a cut-to-size film or standard sizes when considering insulating film solutions. Choosing cut-to-size window insulation films has its advantages:

  • Perfect fit
  • Better insulation
  • Energy cost savings
  • Durability
  • Moisture resistance
  • Protection from damaging UV rays

When selecting the thickness of insulating film, various factors need to be taken into consideration. These include insulation costs, materials and installation costs, and the desired R-value to attain the necessary insulation efficiency.

Thus, customising insulating film solutions allows for a more tailored approach to insulation and energy efficiency improvements, ensuring that your specific needs are met.

You can even add more aesthetic additions to your windows, such as Georgian bars and astragal bars, which can be installed in or with your windows without compromising the insulation.

Window Insulation Film - Our Verdict

Now that we have come to the end of our guide, you should be more informed about insulation film and know that window insulating film is a simple yet effective solution that can significantly enhance the comfort and energy efficiency of your home or office.

It offers an additional layer of thermal insulation, reducing heat gain during summer and heat loss in winter and providing UV protection. With a variety of types available, you can choose the one that best suits your specific needs and preferences.

Not only does insulating film help maintain a comfortable indoor temperature year-round, but it also contributes to environmental sustainability by reducing energy consumption.

So, consider investing in window-insulating films – it’s a wise move that offers both immediate and long-term benefits.

Frequently Asked Questions

Does window insulation film actually work?

Yes, window insulation film does work by helping with heat retention, but it's not a solution for air leak problems or inadequate house insulation.

Can window film help insulate?

Yes, window film can help insulate by increasing insulation and heat retention in your home. It is a cost-effective and easy-to-install option.

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What is the purpose of window insulating film?

The purpose of window insulating film is to provide an extra layer of thermal insulation, helping to regulate indoor temperature by reducing heat gain in summer and heat loss in winter.

This ensures a consistent and comfortable environment year-round.

What are the benefits of single-pane window insulating film?

Using single-pane window insulating film can increase heat retention by up to 40% and save up to 55% more heat during winter, leading to reduced energy usage and improved insulation.

What advantages does triple-glazing insulation film provide for regions with colder climates?

Triple glazing insulation film provides advantages in colder climates, including reduced energy consumption, lower carbon footprint, improved interior comfort and warmth, and decreased noise transmission. It is a beneficial choice for these regions.

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Written by
Myles Robinson
Myles Robinson Managing Director
Posted on: 5th January 2024
Topic: Advice

Myles is one of our esteemed directors at Value Doors, dedicated to sourcing and fitting the best composite doors and windows. His mission is to offer our customers exceptional deals on energy-efficient composite doors, focusing on reducing costs while making sure the most advanced technology is readily available for installation. This commitment is what motivates Myles in the door industry.

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