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Film FAQ

With perforated one-way vision film, you can print graphics on glass and still maintain outward visibility from inside. Here are the answers our team gives most often on ratios, printing, fitting and everyday care.

Film FAQ

What perforation ratio should I choose?

The perforation ratio is the split between the printed face and the open holes in the film. A tighter ratio gives a stronger printed image and a little less see-through, while a more open ratio improves outward visibility but softens the graphic a bit. The right choice depends on where the film is going, how close people stand to it, and whether it is for a shopfront or a vehicle window.

For street-facing retail glazing in Cape Town, Johannesburg, Durban, Pretoria or Gqeberha, many clients ask for a balance between branding and daylight. For vehicles, the back and side windows usually need a different approach because the driver view and road use rules must stay legal. Always check the current road traffic requirements before fitting any vehicle window film.

How is the artwork printed on the film?

Artwork is printed directly onto the perforated film using wide format printing. The print sits on the outside face, while the holes remain open so people inside can still see out. Crisp logos, bold copy and simple high-contrast layouts usually work best because the perforation pattern can soften very fine detail.

  • Use solid colour blocks where possible for stronger impact.
  • Allow for the hole pattern in small text and thin lines.
  • Keep key branding away from window seals, handles and curves on vehicles.
  • For multi-panel shopfronts, align the artwork across each pane before printing.

At our Montague Gardens base, the file setup step is important because the final result depends on correct sizing, panel joins and a clean artwork layout. A good proof saves time and avoids reprinting later.

Why lamination matters on perforated film

Lamination adds protection over the printed face and helps the film handle sunlight, cleaning and day-to-day wear. On shopfronts near the coast, lamination is useful because coastal humidity and salty air can be hard on exposed graphics. On vehicles, it helps protect the print from washing, road dirt and general handling during installation.

Not every job needs the same finish. A matte laminate can reduce glare, while a gloss finish may make colours appear stronger. The choice depends on the glass, the light conditions and how the graphic needs to look from the pavement or roadside.

  • Choose lamination when the film will be cleaned often.
  • Use it where sunlight exposure is high.
  • Ask for a finish that suits the building or vehicle colour.
  • Confirm whether the film will be exposed to rain, heat or salt air.

How do you apply one-way vision film to glass?

Good application starts with proper surface preparation. The glass must be clean, dry and free from dust, oil and old adhesive. For shopfronts we measure the panes carefully, check for chips or seals, then prepare the surface before fitting. The film is applied wet or dry depending on the job size and the condition of the glass.

During installation, the film is aligned from one edge, then smoothed out to remove air pockets and help the perforations sit evenly. On large retail fronts, the installer may work panel by panel to keep the graphics straight. A clean fit is especially important where the film meets frames, safety markings or opening doors.

What should I know before fitting film to vehicle windows?

Vehicle installation needs extra care because of curves, defroster lines, rubber trims and the legal requirements around driver visibility. Perforated film is often used on rear windows and side panels, but it must never block the driver’s view beyond what the current road traffic rules allow. The latest rules should be checked before approving a layout for a bakkie, panel van, taxi or passenger vehicle.

Our vehicle templating and installation process helps to reduce mistakes. The window is measured, the artwork is matched to the vehicle shape, and the film is trimmed so it follows the glass properly without lifting at the edges.

  • Allow time for the film to settle after installation.
  • Do not roll down windows until the adhesive has cured.
  • Avoid fitting over damaged tint or loose old film.
  • Check rear wiper action and heated glass before installation.

How do I clean and maintain the film?

Once fitted, care is straightforward. Wait for the recommended curing period before washing, then clean with a soft cloth or sponge and mild soapy water. Do not use abrasive pads, strong solvents or high-pressure water at close range because these can damage the print or lift an edge.

For shopfronts, regular cleaning keeps the graphics readable and the glass looking neat. For vehicles, a gentle wash is best, especially around the edges and on any rear window seams. If the film is removed later for a refit and refresh, the old adhesive should be cleared off before a new application goes on.

Who helps with quoting, supply and fitting?

Our support team handles questions from retailers, service providers and vehicle owners across South Africa, with supply from Montague Gardens and dispatch to Cape Town, Johannesburg, Durban, Pretoria and Gqeberha. We also work through Bellville and Milnerton supply areas for local collections and coordination.

The usual process is simple: send your enquiry through the contact page form, share your sizes or vehicle details, and we guide you through measuring, artwork setup, colour proofing, printing, lamination and installation. If the existing film is tired or damaged, we can remove it first and prepare the surface properly for the next fit.

Window film questions

What is the difference between a tighter and more open perforation ratio?

A tighter ratio gives a denser printed look and slightly less see-through, while a more open ratio improves visibility from the inside. The right choice depends on the glass size, lighting and whether the film is for a shopfront or vehicle window.

Can perforated film be fitted to any glass panel?

It can be applied to most clean, smooth glass panels, but the surface must be sound and properly prepared. Curved glass, safety markings, old adhesive and damaged seals need to be checked first.

How do I know if a vehicle window graphic is legal?

Vehicle graphics must not block the driver’s view beyond what the current road traffic rules allow. Check the latest rules before fitting, especially for rear and side windows on road-going vehicles.

Got a window or vehicle to cover? Send us the sizes.

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