OVAGLAS, Author at OVAGLAS

02 Mar 2026

FAQs: How Does Anti-Fog Film Work?

Fridge and freezer door fogging is a problem that has plagued retailers for years. As consumers open and close doors, fog can quickly build up on the inside of the glass. Not only does it negatively impact the customer experiences, but businesses can find that it pushes up their energy consumption and electricity bills.

However, applying an anti-fog coating inside the doors can quickly and effectively solve this problem – but how exactly does it work?

Why do freezer doors fog up?

Condensation causes freezer doors to fog up, as the warm, moist air comes into contact with a colder surface. As a glass freezer door is colder than the air in a shop or business premises, when the warmer air meets the cold glass, the temperature difference causes the moisture in the air to condense into water droplets. These water droplets scatter light, creating a foggy appearance. The warmer a space is, the quicker the freezer doors will fog up, and the denser it appears.

Supermarkets and grocery stores in particular tend to be humid as there’s a constant flow of customers coming in and out of the shop, as well as refrigerated products that release moisture into the air. The more moisture in the air, the more fog will appear. Environmental factors like changes in weather or air conditioning can impact the levels of condensation on the glass doors.

How does anti-fog film stop freezer doors from fogging?

As condensation is caused by the interaction between warm air and a cold surface, anti-fog film is designed to change this behaviour. Anti-fog film is hydrophilic, which means that it attracts water. Whilst this might sound like the opposite of what you need, a hydrophilic surface will actually cause the water molecules to spread more evenly across the surface, rather than grouping together as water droplets. As there aren’t any fog droplets to scatter light, the glass will remain see-through.

The anti-fog film also works to change the surface energy of the freezer door. As hydrophilic coatings love water, the film contains anti-fog additives that reduce surface tension, which essentially causes the moisture to form a thin, transparent layer. Some types of film can absorb small amounts of moisture, which is released back into the air once the temperature and humidity is more stable. This means that a freezer door that is constantly being opened and closed can stay clear.

It’s worth remembering that anti-fog film doesn’t get rid of moisture entirely, and it won’t stop ice from forming in particularly low temperatures, but when it is installed and maintained properly, anti-fog coating is a very effective option for commercial freezers and fridges.

Why is it important to prevent fridge and freezer doors from fogging?

Aside from being irritating for customers who can’t see any of the products on display, foggy fridge and freezer doors can be a real financial drain. Some supermarkets and shops rely on door heaters that are fitted around the door frame to keep the glass clear, but these can be very expensive to run.

Each time a freezer door is opened, the cold air rushes to escape. In a busy shop where freezer doors are opened countless times a day, the refrigeration system has to work even harder to maintain its temperature. We know that electricity costs are a major overhead for business owners, and we are all more conscious than ever of how much energy we are using. Research has shown that in supermarkets and other types of food shops, refrigeration consumes around 30-50% of the total energy of the site, with shops that primarily sell frozen food at the top of that range.

Plus, not only are electricity bills higher, but foggy doors with poor visibility can drive away customers. If products aren’t immediately obvious to passing consumers, there’s a higher chance they will walk straight past. Shoppers that are pushed for time are far more likely to make a purchase if they can easily find what they are looking for, so retailers could easily lose out on a significant number of sales.

Installing anti-fog film

Installing film with anti-fog properties is a simple and effective way for retailers to prevent their glass surfaces from fogging. Especially when compared to costly heating systems, applying an anti fog treatment to freezer and fridge doors will incur significant cost savings over time. Unlike using heated doors, a film with anti-fog properties is a passive energy-saving option that doesn’t require any energy consumption at all.

When installed correctly, anti-fog film is extremely durable and gets to work straight away, meaning there is no downtime. It’s also easy to maintain, as it is designed to be durable, resistant to scratching and can be cleaned using standard products.

Prevent freezer door fogging with OVAGLAS

If you’re looking for an anti-fog solution for commercial freezer doors, Clarifoil® Anti-Fog film is proven to prevent fogging and maintain glass transparency. Plus, Clarifoil® anti-fog window film has saved businesses over 148,881 metric tons of CO2, which equates to £68 million of savings on energy bills.

We’d be happy to answer any questions you might have about anti-fog window film or our professional installation services – get in touch with the OVAGLAS team.

01 Mar 2026

How Do I Stop Freezer Doors From Fogging Up?

It’s a problem that many retailers will be all too familiar with – your glass door fridges, the ones that were specifically designed to give customers a clear view of your products, are suddenly impossible to see through.

Fogging on freezer doors is a very common problem, but one that can have a significant impact on your energy consumption, not to mention the experience of your customers. So, what exactly causes your freezer doors to fog up, and more importantly, what can you do to prevent it?

Why do freezer doors fog up?

Freezer doors fog up because of condensation, which is caused by warm, moist air coming into contact with a colder surface. In this case, the glass freezer door is far colder than the air inside your business premises, so when the air meets the glass, the moisture in the air condenses into small water droplets, which creates fog. The warmer it is inside your retail space, the faster the freezer doors will fog up and the denser it will appear.

Supermarkets and grocery stores in particular are often humid environments as there’s a constant flow of customers coming in and out of the shop, as well as refrigerated products that release moisture into the air – and the more moisture in the air, the more condensation will appear! Changing conditions both inside and outside the shop, such as changes in weather or even the air conditioning can impact the levels of condensation on the glass doors.

As you can probably guess, the condensation on freezer doors becomes a bit of a cycle. Customers open the freezer doors to get out a product, and the warm air rushes in, making it more humid in the freezer. Once they close the door and it cools down in the freezer, condensation forms – so then customers have to open the freezer doors more frequently to look inside, as they can’t see the products through the condensation.

Why is it a problem when freezer doors fog up?

Foggy freezer doors are far more than just a slight irritation to customers, they can have a real impact on a business’s energy efficiency and even profitability.

Every time a customer opens a freezer door, cold air rushes out. The more a customer has to open a freezer door, the harder your refrigeration system has to work, which can significantly drive up energy costs. Some retail freezer doors have electrical trim door heaters to keep the glass clear of fog, but over time these can be expensive, and use a surprising amount of electricity.

As well as losing money through increased energy bills, fogged doors with poor visibility can drive away customers. No matter how eye-catching or aesthetically pleasing your products are, nobody is going to pick them up if they can’t see them! It’s frustrating for customers to keep having to open freezers to search for what they need, and creates a pretty poor shopping experience. Especially if a shopper is pushed for time, they’re far more likely to buy something if they can easily find what they need.

Fogged freezer doors can also be a bit of a liability – you might find that puddles are pooling at the bottom of your freezer, meaning you’re constantly getting your employees to wipe down the doors to avoid any slips and falls.

How to prevent freezer doors from fogging

Thankfully, freezer door fogging is a fixable problem – here are a few things that you can try.

Controlling humidity in store

If your premises is prone to humidity – especially during the warmer months – consider using dehumidifiers to limit the amount of moisture that’s in the air. There is only so much that you can do to reduce humidity, as variables out of your control (such as the weather) will have an impact, but dehumidifiers might help.

Improve air circulation

Another option could be altering the layout of your shop to improve the air circulation and stop the warmer air from lingering around the freezer aisle. For example, if your freezers are close to the entrance, they could be moved to the back of the store where the temperatures are more stable – although we appreciate this isn’t a feasible option for a lot of shops.

Regular cleaning

Freezer doors can be kept more clear and dry by frequent cleaning and wiping, using anti-fog sprays if needed – although this isn’t a long-term strategy, as you might end up spending a huge amount of your time wiping down the doors in between customers!

Anti-fog film

One of the most effective ways to eliminate freezer door fog is by installing anti-fog window film. It is a thin, transparent film that can be applied to glass freezer doors to prevent condensation from forming. Unlike using heated doors, a film with anti-fog properties is a passive energy-saving option that doesn’t require any energy consumption at all.

We offer Clarifoil® Anti-Fog Film, which creates an anti-fog coating on commercial freezer doors to help you save money and energy. In fact, Clarifoil® anti-fog window film has saved businesses over 148,881 metric tons of CO2, which equates to £68 million of savings on energy bills.

It couldn’t be easier to install – we offer professional installation services – and requires little effort to maintain.

Clarifoil® Anti-Fog Film Installation

Clarifoil® Anti-Fog film applied on the inside surface of your freezer doors prevents fogging and maintains glass transparency, so that customers can easily see the merchandise on offer.

We’d be happy to answer any questions you might have about anti-fog window film or our professional installation services – get in touch with the OVAGLAS team.

26 Feb 2026

FAQs: Does Window Film Affect Plants?

From improving air quality to reducing stress, we all know the benefits that plants can have on a workplace – and we also know that without adequate sunlight, plants can’t thrive.

So, if your workplace is fitted with window film, how will this impact your office plants?

How window film affects plants

If you cast your mind back to your school days, you’ll remember that plants rely on sunlight for photosynthesis – so if they don’t get adequate sunlight, they will start to wither. Depending on the type of window film, it will change the amount, type and quality of light that will enter a space.

UV-blocking films

Although plants need sunlight to grow, they don’t actually need UV rays. Too much UV exposure is notoriously bad for plants and people alike, with risks of overexposure including sunburn, eye damage and even skin cancer.

UV-filtering films filter out the harmful rays in direct sunlight, whilst still letting in plenty of natural light. They still let in red and blue light – red light promotes flowering, whilst blue light aids the growth of healthy leaves. So, this type of window film doesn’t tend to have a negative impact on plant growth, and can actually help to protect house plants from sunburn (yes, plants can get it too!) and excessive heat.

Reflective or solar control window film

Reflective and solar control window films reduce heat and glare by reflecting a portion of the sunlight, which can lower the levels of light that get inside. As the visible light levels are lower, this can have a negative impact on plants that need bright, direct light to thrive – such as succulents or cacti – but can actually be very beneficial for plants that love the shade and thrive without too much sunlight.

Some indoor plants – especially those with dark green leaves – fare better with window film, as it creates a more stable indoor temperature.

Frosted or decorative window film

These types of window films tend to diffuse light, which distributes it more evenly across a room. Plants tend to benefit from diffused light, as it can minimise harsh shadows and actually mimics the natural light conditions you’d expect to find outside!

Tinted window film

As you might expect, tinted window films let in less light than many other types of window film. This is bad news for plants that require a lot of natural light to grow, but great for plants like ferns or peace lilies that tend to thrive in low light conditions.

Keeping plants healthy after installing window film

If you’re worried that window film will negatively impact your plants, the most important thing you can do is select a film that balances your needs with your plants’ needs. For example, if you want to bring a bit more privacy to your workplace, frosted window film or films that block UV light can do that whilst not impacting your plants.

After your window film has been installed, make sure to keep a close eye on your plants for signs of either light deprivation or excessive exposure. Their leaves may start to yellow, or they could start wilting – monitor them to see how the light conditions might be impacting them. You can always move them closer to windows or to a more shaded area depending on how they have reacted.

If you have any questions about window film and would like to know the best types of film for your workplace, our team is happy to help.

20 Feb 2026

FAQs: Does Privacy Window Film Work at Night?

Privacy window films are a great way to enhance privacy in both commercial and residential properties. However, their effectiveness at night depends on a few different factors.

We know how important it is for businesses to have the peace of mind that their premises are as secure as possible, especially during the darker months – here’s everything you need to know about using window film for privacy at night.

How does privacy window film work?

In the daytime, most privacy window films use their reflective surfaces to create a one-way mirror effect. This is most effective when the outside is brighter than the inside, so during the day, the sunlight reflects off the window film, making it much harder to see indoors.

Lighting conditions are the most important factor when it comes to the effectiveness of reflective films, as it’s the side of the window film that is being exposed to the brightest light that will essentially take on the privacy properties. This means that at night, if there are any lights on indoors – even if it’s not a particularly brightly lit room – the one-way effect is essentially reversed, and people will be able to see inside the property.

So, whilst reflective window films can offer some degree of privacy at night, it is dependent on the lighting conditions. Although many offices and commercial properties turn their lights off at night, there is still a chance that the interior lighting may be brighter than the outdoor lighting, depending on the external light sources.

Types of privacy window film

As well as reflective window film, there are several other types of window film available that can help to bring more privacy.

Frosted window film

Frosted window films create a translucent effect that blurs the view on both sides of the window without sacrificing natural light. Although they are probably most commonly used for bathroom windows, frosted film is also ideal for conference rooms, offices and partitions. Plus, frosted window film works just as well at night as it does during the day.

Blackout window film

Blackout window film is exactly what it sounds like, a fully opaque window film that blocks all visibility. Although this is great for privacy, blackout films don’t let in any light, so it is only really suitable for areas that require total privacy, like storage rooms.

Decorative window films

Another popular option are decorative window films, which are available in a wide range of patterns and gradients. They help to obscure the view and provide privacy but just with that bit more aesthetic appeal.

Switchable or smart films

Switchable and smart films are advanced window films that can switch from transparent to opaque at the touch of a button, using liquid crystal technology. Like traditional window films, they are applied directly to glass surfaces, but switchable and smart films are powered by electricity.

When they are in a transparent state, they let in natural light and visibility, but when they are opaque they provide total privacy. These types of films are most commonly used for spaces that need a bit more confidentiality, like conference rooms and executive offices.

How to improve privacy in your office

There may not be a window film that will totally obscure the view inside your commercial property (unless you’re willing to sacrifice all of your natural light!), but it will definitely help to improve the privacy in your workplace.

For enhanced privacy at night, window films can be combined with extra protection such as blinds or curtains. Professional installation can also make a difference to how well your window film works, as poorly fitted window film can lead to uneven coverage.If you’re looking to improve the privacy in your commercial property, we’d be happy to talk you through the best type of window film for your needs.

17 Feb 2026

A Guide to Glass Manifestation Regulations

Ever noticed the patterns and graphics that are featured on glass doors, walls and windows? They’re far more than just a decorative feature – they’re actually a legal requirement. Although glass is a popular material due to its ability to let in lots of natural light and open up a space, the downside is that it’s not always easy to spot.

Manifestations were created as a way to make glass immediately apparent, to avoid any nasty collisions or accidents. These graphics are adhered to the glass to highlight that there’s something there and – hopefully – stop people from walking into them. Manifestations are required on internal or external walls, doors and windows that are made of glass.

Glass manifestation regulations

Building Regulations 2000: Part M sets out the guidelines clearly on how to make glass entrances and screens compliant to the legal requirements. It states that:

Visibility requirements: Glass entrance doors and glazed screens must have manifestations at two levels: at 850 – 1000m, and at 1400 – 1600mm above the floor. They need to contrast clearly with the background both inside and outside the glass, and should be visible in all lighting conditions.

Regulation 14 of the Workplace (Healthy, Safety and Welfare) Regulations 1992 states that transparent surfaces must be marked or incorporate features to make them visible.

Types of manifestations: Common forms of manifestations include decorative features – like continuous bands, or broken lines – or they could be logos, signs and other designs. However, they must meet the above visibility and height requirements.

However, not all glass walls, windows and partitions require manifestations, as some will already have features that make them visible enough. The legislation lists the following as exemptions:

Glazing with rails between 600 – 1500mm above the floor
Glazing that is less than 400mm in width between the frames
Single-pane glazed doors with a substantial frame
Glazed doors without frames, or with narrow frames, that have large handles or push plates on each single pane.

Benefits of glass manifestations

Legal compliance

Above everything else, glass manifestations are a legal requirement! Fitting manifestations gives you the peace of mind that your property is compliant with UK Building Regulations and the Workplace (Health, Safety, and Welfare) Regulations 1992.

Health and safety regulations

Collisions with glass are a major hazard, so it’s in a workplace’s best interests to stay on top of health and safety regulations. It’s not just about avoiding the potential legal ramifications, however – it’s about showing your commitment to the wellbeing of your employees, visitors and customers. Manifestations couldn’t be an easier way of making your existing windows safer, as they make clear glass obvious to passersby.

Design and branding

Far from just being a safety measure, glass manifestations can also be a way of further incorporating your branding into your workplace decor. Broken lines or continuous bands may be common choices, as are rows of dots of different sizes, but as long as your glass manifestation is legally compliant and is contrasting visually with the background, you can get creative. You can pick a bespoke design like company logos, graphics, shapes or patterns – for example, if you’re trying to find manifestations for a shopfront, you could go for something bold and eye-catching to draw in potential customers.

Privacy

Manifestations can also double up as extra privacy, without sacrificing natural light. If you have glass partitions separating areas that need more privacy, like board rooms or meeting rooms, frosted film can be used to keep it shielded from prying eyes, whilst also adhering to the necessary safety measures.

Glass manifestation installation

All public buildings that have glass windows need to stick to the UK safety regulations to ensure the safety of their occupants, so if your workplace doesn’t already have glass manifestations in critical locations around your building – or if you’d like to upgrade your existing ones – it’s incredibly important to get them installed.As specialists in all things glazing enhancements, we offer bespoke glass manifestations in a range of colours, designs and finishes.

All of our solutions are durable, easy to maintain, and ideal for high-traffic commercial environments, so you know they’re going to last – and they’re fitted by expert installers.. Plus, we’ve got a thorough understanding of the UK laws and regulations around manifestations, so they will be totally compliant and up to code. Get in touch with our team if you’d like to find out more about our glass manifestation service.

14 Feb 2026

Choosing the Perfect Decorative Window Film for Your Business

Windows are an often-overlooked part of a room, even though they can totally transform the aesthetic of a space – not to mention the functionality. When you’re redecorating, upgrading your windows might not be at the top of your list, but you’d be surprised at how much visual impact your windows can have.

So, whether you’re looking for a window film that increases privacy, reinforces your branding or just makes your commercial space look that bit better, we’ll show you how to pick the perfect decorative window film.

Benefits of decorative window film

Aside from making your space more stylish, decorative window film comes with plenty of other benefits. Decorative film can bring more privacy by obscuring the view into your property without sacrificing natural light, and you can pick a film that offers more or less visibility, depending on what you need, such as frosted film. You can also opt for branded window film that is custom-designed with your branding, logos or designs to keep everything in your office looking cohesive.

Like most window films, decorative window film can help to block harmful UV rays, which can prevent your furniture from fading prematurely. It can also reduce heat transfer, which means in winter it can stop heat escaping but in the warmer months can keep things cool.

Unsurprisingly, one of the main benefits of decorative window film is that it looks great! You can pick a window film that matches your building’s aesthetic, but you can change it as many times as you like – as trends or your decor changes, you can swap out your window film accordingly. It’s far more cost-effective than replacing your glass windows entirely, and much more flexible.

How to pick the best decorative window film

Picking a window film isn’t just a matter of choosing which one you like the look of best – although that’s definitely part of it – but picking one that works best for your needs…

Privacy

The amount of privacy you need will impact the type of window film you should opt for. Areas that need a higher level of privacy – like conference rooms or bathrooms – will need a frosted or opaque window film, or a switchable film that allows you to adjust the levels of privacy given. Gradient films are ideal for a medium level of privacy, for example in private offices, whilst a frosted or patterned window film is a good choice for areas that don’t need much privacy.

However, it’s important to remember that reflective films may help obscure the view inside your building during the day, but loses its effectiveness at night – you might need additional curtains or blinds for round-the-clock privacy.

Branding

Branded window film gives you the chance to show your brand identity throughout your premises. You could go all out and get your logo printed across your windows – a logo on frosted window film is a popular choice for external windows, as it signposts your business whilst offering some privacy. If you’re looking for something a little more subtle, you could choose window films in your brand colours, so it all ties together.

You could also pick for a window film that reflects your brand style, whether that be bold, modern or minimalistic. For example, a chic, modern office could go for a ‘reeded’ textured film, whilst a creative studio might opt for something bold and colourful.

Type of windows

It’s worth noting that not all window films are suitable for all types of glass, which is why it’s best to speak to specialists before picking a decorative film. Some window films work better on bigger or smaller window panes, whilst different types of glass – such as laminated or tempered – might not be compatible with your window film.

Another (possibly surprising) consideration is the orientation of your windows. If you are lucky enough to have south-facing windows that flood your room with light, a UV-blocking or heat-reducing window film will still let plenty of light in but keep things more comfortable.

Professional installation

You might think it looks simple to apply decorative window film yourself, but professional glass film installation will ensure it looks flawless. Poor installation can be particularly visible on patterned window film, so it’s always best to leave it to the experts.

Professionally-installed window film means you won’t have any annoying bubbles, wrinkles or uneven edges. It also ensures that your window film will be cut precisely to the shape and dimension of your windows, which is particularly important if your windows are an unusual shape.

Most importantly, properly installed window film just lasts longer! It’s far more durable when applied by the professionals – plus, many manufacturers’ warranties actually require you to opt for professional fitting.

For all things decorative window film – including professional installation – get in touch with our team, who will be more than happy to answer your questions.

OVAGLAS

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Latest

Why do freezer doors fog up?

How does anti-fog film stop freezer doors from fogging?

Why is it important to prevent fridge and freezer doors from fogging?

Installing anti-fog film

Prevent freezer door fogging with OVAGLAS

Why do freezer doors fog up?

Why is it a problem when freezer doors fog up?

How to prevent freezer doors from fogging

Controlling humidity in store

Improve air circulation

Regular cleaning

Anti-fog film

Clarifoil® Anti-Fog Film Installation

How window film affects plants

UV-blocking films

Reflective or solar control window film

Frosted or decorative window film

Tinted window film

Keeping plants healthy after installing window film

How does privacy window film work?

Types of privacy window film

Frosted window film

Blackout window film

Decorative window films

Switchable or smart films

How to improve privacy in your office

Glass manifestation regulations

Benefits of glass manifestations

Legal compliance

Health and safety regulations

Design and branding

Privacy

Glass manifestation installation

Benefits of decorative window film

How to pick the best decorative window film

Privacy

Branding

Type of windows

Professional installation

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