Clear freezer glass, without relying on heat alone.

Clarifoil Anti-Fog Film for fridge and freezer doors, plus solar, coating and security film for shopfront glazing. Fitted to the glass you already have, aisle by aisle, in trading hours.

See the product Call 1300 075 075

A run of supermarket freezer doors in an Australian store, every pane fogged over so the packaged product behind the glass is barely readable — Australian supermarket freezer aisle, September 2026. These doors have glass heating fitted and they are still fogged in ordinary trading conditions. That is the problem the film is aimed at.

OVAGLAS films are retrofit surface treatments for glass that is already installed in a store. The one most estates start with is Clarifoil Anti-Fog Film: a cellulose acetate film, made by Celanese from renewable wood pulp, applied to the inside face of a fridge or freezer door. It is hydrophilic, so condensation spreads across it as an even invisible layer instead of beading into the droplets that turn a door white. The glass stays readable through every opening, product keeps selling, and the anti sweat heaters in the door are no longer the only thing holding off fog. That is where the energy case comes from: on published industry figures, a freezer door whose glass heat can be wound back avoids roughly 790 to 1,110 kWh a year, which on the NSW grid is about half to seven tenths of a tonne of carbon per door. Those are other people's figures, not a Nextage measurement, and the page shows every one of them. The rest of the range works on shopfront glazing: solar control film and Liquisol coatings cut heat coming through the glass, and security film holds a struck pane together in its frame. Nextage Group supplies and installs the OVAGLAS range across Australian retail estates, fitting freezer door film in trading hours, aisle by aisle, and treating the glass in place rather than replacing a door or a window.

175,000 doors

Fridge and freezer doors fitted with Clarifoil worldwide, on the count OVAGLAS publish, alongside 175,460 tonnes of carbon avoided. Their figure across their whole customer base, not a forecast for yours.

Up to 5 kWh

Per door per day that OVAGLAS say the film can take off door heating. It is their number and the basis of their own savings calculator, and it is the figure a trial on your cases is measured against.

Trading hours

When it goes on. The doors you already have, aisle by aisle, with no case modification, no power supply to run in, no stock relocation and no shutdown.

Five years

Installation warranty. Nextage supplies and installs in Australia, with OVAGLAS behind the film and Celanese behind the material.

How it works

Fog is a dew point problem, and there are two ways to answer it.

Warm store air meets cold glass

A freezer door fogs the moment it is opened. Store air carrying shopper humidity hits a pane held well below dew point, and the moisture in it condenses on the surface. The shopper standing in front of that door cannot see what is inside, so they guess, open a second door, or move on.

Heaters answer it with electricity

Anti sweat heaters in the glass, the frame and the mullions hold the surface above store dew point. Without dew point control they commonly run every hour of the year, and the heat they put into the case gets pulled straight back out by the refrigeration, so the same door is billed twice.

The film answers it with surface chemistry

Clarifoil is hydrophilic. The same condensation arrives, but it spreads into a thin even layer rather than beading into droplets that scatter light, so the glass stays readable through every opening. Nothing is powered, nothing moves and nothing goes on the maintenance schedule.

Which is what opens the heat question

Once clarity no longer depends on the heater, engineering has headroom to wind glass or trim heat down and hold it down, inside the dew point limits of each store. That is a trial with a meter on it, not a switch anyone flips on our word.

Chart: cumulative glass heater energy for one freezer door over a year, 1,770 kWh with the heaters on and no film, 982 kWh on the published lab scenario and 658 kWh on the published field report — Diagram. The published watt figures on this page carried over a year for one low temperature freezer door. Illustrative, and it leaves out the compressor work avoided once that heat no longer enters the case.

The figures

What the published figures actually say

Three different things get quoted interchangeably in this market: an industry load figure for heated door glass, a laboratory scenario, and a supplier claim. They are separated here, and every row says whose number it is.

What is measured	Published figure	Whose figure it is
Anti sweat heater connected load on a low temperature freezer glass door	180 to 216 W per door	SCE Design and Engineering, 2009
Heater energy over a year if that circuit runs continuously	About 1,770 kWh per door	SCE Design and Engineering, 2009
Demand reduction in anti fog film lab scenarios, glass heat removed	More than 90 W per door	ACEEE Summer Study 2008 and SCE
Field trade report with the heating off and the fog cleared	About 127 W per door	Lexan and Deen, reported 2008
Reduction in door heating claimed for Clarifoil	Up to 5 kWh per door per day	OVAGLAS, the film supplier
Trim heater reduction cited in a supplier case write up	About 75 per cent	Supplier case study, a UK retailer
Energy saved a year across one contractor's filmed client estates	Over 15,000,000 kWh	City Building Engineering Services, quoted by OVAGLAS
Doors fitted and carbon avoided to date	175,000 doors, 175,460 tonnes	OVAGLAS, published on their own site

Read the first four rows carefully. They are third party figures for electrically heated freezer door glass in general, not for Clarifoil, and they describe what a heater draws and what removing that heat is worth. The last four are supplier and contractor claims. None of the eight is a Nextage Australian test result and none of them is a forecast for your stores. We do not estimate a saving on your network. We meter a door.

Cost and carbon

What those watts are worth across an estate

The same published watt figures, carried out to the scale an estate buys at and converted to carbon and money. Twenty doors is one illustrative freezer run and 200 is ten of them, not a count of any real store. Every input is shown so you can swap in your own.

Per year	One door	A 20 door run	200 doors
Heater energy, circuit running continuously	1,770 kWh	35,400 kWh	354,000 kWh
Avoided on the lab scenario, 90 W removed	788 kWh	15,760 kWh	157,600 kWh
Avoided on the field report, 127 W removed	1,112 kWh	22,240 kWh	222,400 kWh
Carbon avoided in NSW and the ACT, at 0.64 kg per kWh	0.50 to 0.71 tonnes	10.1 to 14.2 tonnes	101 to 142 tonnes
Power cost avoided, at an assumed 25c per kWh	$197 to $278	$3,940 to $5,560	$39,400 to $55,600

Carbon uses the National Greenhouse Accounts Factors 2025 location based scope 2 factor for NSW and the ACT; other states are below. The 25c per kWh is a round number for the arithmetic, not a quoted tariff, so put your contracted rate in its place. Every row understates in one direction: heat a door heater puts into the case has to be pulled back out by the refrigeration, and that compressor work is not counted here. None of it is a Nextage measurement or a forecast for your stores. A metered trial on your own doors is what turns it into your number.

Emission factors

Swap in your own state

Location based scope 2 factors for grid electricity, from Table 1 of the National Greenhouse Accounts Factors 2025, published by the Department of Climate Change, Energy, the Environment and Water. The right hand column applies each one to the field report figure of 1,112 kWh avoided per door.

State or grid	kg CO2e per kWh	Carbon avoided per door a year
New South Wales and the ACT	0.64	712 kg
Victoria	0.78	867 kg
Queensland	0.67	745 kg
South Australia	0.22	245 kg
Western Australia, South West Interconnected System	0.50	556 kg
Western Australia, North Western Interconnected System	0.56	623 kg
Tasmania	0.20	222 kg
Northern Territory, Darwin Katherine Interconnected System	0.56	623 kg
National	0.62	689 kg

The same door avoids nearly four times the carbon in Victoria that it does in Tasmania, because the grid behind it is dirtier. For an estate across several states that is worth knowing before choosing where to trial.

Specification

Clarifoil Anti-Fog Film at a glance

Item	Detail
Material	Cellulose acetate film made from renewable wood pulp, bio based and biodegradable. Manufactured by Celanese, who have made cellulose acetate since the 1930s and position it as an alternative to petroleum based plastic films. Supplied through OVAGLAS
Applied to	The inside face of the door glass, on refrigerated and frozen display cases
Appearance	Clear. It sits inside the glass and is not meant to be noticed. We fit a sample door so your team can judge that under your own store lighting
Door formats	Cut to your case schedule. Full height and half height door formats
Installation	Retrofit in trading hours. No case modification, no power supply, no stock relocation, no shutdown
Store upkeep	None. Doors are cleaned to the normal store routine
Warranty	Five year installation warranty
Where it does not apply	Open fronted cabinets, because there is no door glass to treat. Those are an Aerofoil blade or air curtain question instead

Most estates are a mix of doored and open cases, and the two halves run under one energy efficiency program rather than two.

Photos

Fogged glass, and the same glass with film on it

These four are OVAGLAS photographs from overseas stores, not Nextage Australian jobs. They are here because the thing the film does is visible, which is the part a photograph settles and a paragraph does not.

An open freezer door in a supermarket aisle with the untreated glass gone completely white with condensation, hiding the product behind it — Untreated door glass, photographed by OVAGLAS. The pane has gone white and there is no way to tell what is on the shelves behind it.

A freezer door with Clarifoil Anti-Fog Film fitted, the glass clear and the packaged bread rolls on the shelves behind it plainly visible — A door in the same store and aisle with Clarifoil fitted, on OVAGLAS's caption. Clear glass, and the product is readable through it.

A run of supermarket freezer doors with heavy condensation across every pane — A whole untreated run. Fog is rarely one bad door, it is the aisle. OVAGLAS photograph, overseas store.

The same style of freezer run with anti fog film fitted, every door clear and the stock visible from the aisle — The same aisle format with film fitted. OVAGLAS photograph, overseas store.

The range

One range, several different jobs on the same glass.

Clarifoil Anti-Fog Film

For fridge and freezer doors. A cellulose acetate film from Celanese, applied to the inside face of the glass, that keeps the door readable so product stays visible and the door heating is no longer the only thing holding off condensation. The product OVAGLAS is best known for, and where most estates start.

Liquisol energy saving coatings

Applied coatings that lift the thermal performance of glazing already in the building. OVAGLAS are an authorised Liquisol applicator.

Solar control window film

Reflects and absorbs part of the incoming solar spectrum, cutting heat gain through shopfront glass while keeping the daylight, so the store does not end up dark enough to look shut.

Security and blast film

Holds glass together on impact so it stays in the frame rather than coming down as shards. That is a safety and shrinkage question rather than an energy one.

Flexible anchoring systems

OVAGLAS's own system for anchoring filmed glass back to the frame, so a treated pane stays put under load instead of leaving the rebate in one piece.

Delivery

How a trial is run

One door filmed, the door beside it left alone, both heater circuits metered. The boundary sits on the heater circuit rather than the store meter, so what comes back is the film and not the weather.

Baseline the pair
We confirm what your doors actually run, glass heat, trim heat or both, then log the heater circuit on a trial door and on an untouched control door beside it for two trading weeks. Fog clearing time is filmed at peak trade and case temperature is recorded with it.
Film it, then meter it again
Nextage supplies the film and runs the install, in trading hours, with no case shutdown. The loggers stay on for a matched two weeks and the control door stays untouched, so weather and trading traffic cancel out of the comparison.
Report, then decide
One page per door: fog clearing time before and after, matched photographs taken at the same hour of the day, watts removed, and kWh a year adjusted against the control. It is judged against a pass mark you set before we start, and you keep the data either way.

Supply and install

Supplied, ordered and fitted for you.

No products to order, fixings to buy or trades to chase. One call, and it arrives fitted.

Talk about a program Call 1300 075 075

Tell us the site and roughly how many. We come back with a quote within 2 business days.

We measure
A site walk sets what goes where, and how many.
We order
The right product, size and quantity, delivered to site.
We organise
Access, inductions and timing around your trading hours.
We install and photograph
Fitted by our crews, with before and after photos when it is done.

What Nextage does

Supply and installation of the OVAGLAS range across Australian retail estates
A survey of the doors and glazing actually in each store, before anything is quoted
Freezer door film fitted in trading hours, aisle by aisle, with no case modification and no stock relocation
A sample door or a single aisle filmed first, so your team judges the result on your own glass under your own lighting
A metered trial against an untouched control door wherever the energy case has to stand up
A per site price, so glazing work stages against capital like every other program
Photo completion pack per store, with the treated door and pane schedule alongside it

What this is not

Replacing doors, cabinets or shopfronts. This treats glass that stays where it is
Open fronted refrigeration cabinets, which have no door glass to film. Aerofoil blades and air curtains cover those
A guaranteed saving percentage before the survey. We meter a door, we do not promise a number in advance
Turning your door heaters down on our word. That is your engineering team's call, made on your dew point limits and your data
Structural glazing engineering or certified blast rating work

About the published figures

Every figure on this page belongs to somebody else, and the table above says who. OVAGLAS, who supply the film, publish 175,000 doors fitted, 175,460 tonnes of carbon avoided and up to 5 kWh a day per door off door heating. The 15,000,000 kWh a year figure is City Building Engineering Services describing their own filmed client estates, quoted by OVAGLAS. The watt and kWh figures behind the chart are industry and laboratory numbers for electrically heated freezer door glass, published by others in 2008 and 2009, and they are not Clarifoil test results. The carbon conversion uses the Australian Government's 2025 emission factors, and the 25c per kWh in the cost rows is a stated assumption, not a tariff. None of it is a Nextage Australian measurement. What we will tell you about your estate comes from the survey and the metered trial: which doors are actually fogging, what those heater circuits actually draw, and what came off them once the film was on.

FAQ

About OVAGLAS films

Why do supermarket freezer doors fog up?

Warm store air carrying shopper humidity meets glass held well below dew point, and the moisture in it condenses on the pane. Most Australian supermarket freezer doors already run glass or trim heaters to hold the surface above dew point, and in busy trading they still fog, because every door opening puts a fresh load of humid air onto cold glass.

What is anti fog film and how does it work?

It is a clear film applied to the inside face of the door glass. Clarifoil Anti-Fog Film is hydrophilic, so condensation spreads across it as an even invisible layer instead of beading into the droplets that scatter light. The water is still there. It just stops turning the glass white.

Do you have to replace the freezer doors?

No, and that is the point. The film goes onto the glass already in the cabinet, so there is no door replacement, no cabinet strip out and no capital project behind it.

Will the store have to shut, or an aisle come off line?

No. Freezer door film goes on in trading hours, aisle by aisle. There is no case modification, no power supply to run in, no stock relocation and no shutdown.

How much energy will it save?

We will not put a number on your estate before metering it. OVAGLAS publish up to 5 kWh per door per day off door heating, and there are industry and laboratory figures for heated freezer glass going back to 2008, all set out with their sources on this page. The number that matters is the one read off your own heater circuit, before and after, against a control door that was left alone.

How much carbon does anti fog film save?

It depends on how much door heat your engineering team can wind back, and on the grid behind the store. On published industry figures, a door avoids roughly 790 to 1,110 kWh a year once its glass heat comes off. At the Australian Government's 2025 factor for NSW and the ACT, 0.64 kg per kWh, that is about half to seven tenths of a tonne per door, or 10 to 14 tonnes across a 20 door freezer run. In Victoria the same door avoids more, in Tasmania and South Australia far less. Those are published figures carried through, not a Nextage measurement, and they leave out the compressor work avoided as well, so they understate.

Is the film itself a plastic?

Not a petroleum based one. Clarifoil is cellulose acetate, made by Celanese from renewable wood pulp, and both Celanese and OVAGLAS describe it as bio based and biodegradable. Celanese position it as an alternative to the petroleum based plastic films commonly used today.

Can the door heaters be turned down once the film is on?

That is exactly what a trial answers. The film makes clarity independent of the heater, which gives engineering room to wind glass or trim heat back and hold it back, inside the dew point limits of that store. How far it can come down is metered on your cases, not assumed on ours.

Is Nextage an authorised OVAGLAS supplier?

Yes. Nextage supplies and installs the OVAGLAS range in Australia, so the film is the genuine product and it goes on to the manufacturer's method. The film itself is a Clarifoil cellulose acetate film made by Celanese and supplied through OVAGLAS.

Can we see it on our own glass before committing to an estate?

Yes. We survey the site and film a sample door or a single aisle at no obligation, and your team judges it on your own glass, under your own lighting, in front of your own shoppers.

Can the freezer door film and the shopfront film run under one program?

Yes, and they usually should. If a crew is already attending a store for freezer doors, the shopfront glazing belongs on the same visit rather than on a second mobilisation.

How is security film different from the other films?

Same glass, different job. The freezer door and solar films are about visibility and heat. Security film is about what happens when the glass is struck, and it usually sits with a storefront protection program rather than an energy one.

What about cabinets that have no doors on them?

Those are a different product. An open fronted case is an Aerofoil blade or an air curtain question, and both run under the same energy efficiency program, so a mixed estate does not need two suppliers.

Often runs alongside

Clarifoil anti fog film

Clarifoil anti fog film for fridge and freezer door glass. Applied to the doors you have, aisle by aisle, in trading hours, with a five year installation warranty.

Aerofoil blades for open refrigeration cabinets

Shelf edge Aerofoils fitted to open refrigeration cabinets to hold the air curtain and cut cold air spill into the aisle.

Air curtains for retail and cool room doors

Air curtains at store entrances, cool room doors, back of house and dock openings. Sized to the opening, commissioned with a meter in hand, then priced per store.

Storefront protection & bollards

Vehicle impact protection for shopfronts, entries and pedestrian edges. Specified once, audited, then staged across the fleet.

Refrigeration & door energy efficiency

Aerofoil blades on refrigeration cabinets and air curtains at cool room and entry doors. Measured on site before capital is committed, then staged across the estate.

Start with one aisle.

We survey the doors, film a sample, and meter it against the door beside it.

Talk about a program 1300 075 075